/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:36:40,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:36:40,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:36:40,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:36:40,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:36:40,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:36:40,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:36:40,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:36:40,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:36:40,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:36:40,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:36:40,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:36:40,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:36:40,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:36:40,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:36:40,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:36:40,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:36:40,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:36:40,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:36:40,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:36:40,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:36:40,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:36:40,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:36:40,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:36:40,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:36:40,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:36:40,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:36:40,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:36:40,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:36:40,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:36:40,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:36:40,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:36:40,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:36:40,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:36:40,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:36:40,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:36:40,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:36:40,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:36:40,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:36:40,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:36:40,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:36:40,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 23:36:40,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:36:40,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:36:40,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:36:40,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:36:40,489 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:36:40,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:36:40,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:36:40,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:36:40,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:36:40,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:36:40,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:36:40,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:36:40,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:36:40,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:36:40,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:36:40,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:36:40,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:36:40,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:36:40,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:36:40,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:36:40,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:36:40,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:36:40,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:36:40,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:36:40,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:36:40,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:36:40,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:36:40,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:36:40,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:36:40,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:36:40,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:36:40,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:36:40,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:36:40,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:36:40,801 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:36:40,802 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-21 23:36:40,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/806ea122d/1c06f6d81b3c4ca5b5f87eb921217072/FLAGe56e4bc9e [2020-08-21 23:36:41,390 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:36:41,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-21 23:36:41,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/806ea122d/1c06f6d81b3c4ca5b5f87eb921217072/FLAGe56e4bc9e [2020-08-21 23:36:41,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/806ea122d/1c06f6d81b3c4ca5b5f87eb921217072 [2020-08-21 23:36:41,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:36:41,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:36:41,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:36:41,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:36:41,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:36:41,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:36:41" (1/1) ... [2020-08-21 23:36:41,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7503bbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:41, skipping insertion in model container [2020-08-21 23:36:41,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:36:41" (1/1) ... [2020-08-21 23:36:41,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:36:41,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:36:42,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:36:42,286 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:36:42,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:36:42,424 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:36:42,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42 WrapperNode [2020-08-21 23:36:42,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:36:42,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:36:42,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:36:42,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:36:42,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (1/1) ... [2020-08-21 23:36:42,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (1/1) ... [2020-08-21 23:36:42,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (1/1) ... [2020-08-21 23:36:42,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (1/1) ... [2020-08-21 23:36:42,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (1/1) ... [2020-08-21 23:36:42,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (1/1) ... [2020-08-21 23:36:42,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (1/1) ... [2020-08-21 23:36:42,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:36:42,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:36:42,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:36:42,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:36:42,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:36:42,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:36:42,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:36:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:36:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:36:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:36:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:36:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:36:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:36:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:36:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:36:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:36:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:36:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:36:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:36:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:36:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:36:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:36:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 23:36:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 23:36:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 23:36:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:36:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:36:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:36:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 23:36:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:36:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:36:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:36:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:36:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:36:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:36:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:36:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 23:36:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 23:36:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 23:36:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:36:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:36:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:36:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:36:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:36:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:36:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:36:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:36:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:36:42,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:36:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:36:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:36:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:36:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:36:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:36:42,607 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:36:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:36:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:36:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:36:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:36:42,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:36:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:36:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:36:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:36:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:36:42,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:36:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:36:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:36:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:36:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:36:42,610 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:36:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:36:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:36:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:36:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:36:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:36:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:36:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:36:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 23:36:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:36:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 23:36:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 23:36:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:36:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:36:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:36:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:36:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 23:36:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 23:36:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:36:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:36:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:36:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:36:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 23:36:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 23:36:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:36:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:36:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:36:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:36:42,615 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:36:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:36:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:36:43,980 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:36:43,980 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:36:43,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:36:43 BoogieIcfgContainer [2020-08-21 23:36:43,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:36:43,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:36:43,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:36:43,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:36:43,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:36:41" (1/3) ... [2020-08-21 23:36:43,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be288fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:36:43, skipping insertion in model container [2020-08-21 23:36:43,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:42" (2/3) ... [2020-08-21 23:36:43,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be288fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:36:43, skipping insertion in model container [2020-08-21 23:36:43,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:36:43" (3/3) ... [2020-08-21 23:36:43,994 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-21 23:36:44,005 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:36:44,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:36:44,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:36:44,055 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:36:44,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:36:44,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:36:44,056 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:36:44,056 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:36:44,056 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:36:44,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:36:44,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:36:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-21 23:36:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 23:36:44,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:44,093 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] [2020-08-21 23:36:44,093 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:44,100 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-21 23:36:44,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:44,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616838687] [2020-08-21 23:36:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,738 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:36:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 23:36:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:44,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616838687] [2020-08-21 23:36:44,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:44,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:36:44,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118265538] [2020-08-21 23:36:44,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:36:44,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:44,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:36:44,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:36:44,908 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-21 23:36:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:46,305 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-21 23:36:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:36:46,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 23:36:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:46,323 INFO L225 Difference]: With dead ends: 353 [2020-08-21 23:36:46,323 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 23:36:46,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:36:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 23:36:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-21 23:36:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-21 23:36:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-21 23:36:46,435 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-21 23:36:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:46,436 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-21 23:36:46,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:36:46,436 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-21 23:36:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:36:46,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:46,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:36:46,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:36:46,441 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:46,442 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-21 23:36:46,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:46,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366666265] [2020-08-21 23:36:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,804 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:36:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:36:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:46,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366666265] [2020-08-21 23:36:46,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:46,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:36:46,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077727685] [2020-08-21 23:36:46,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:36:46,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:46,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:36:46,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:36:46,909 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-21 23:36:47,402 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:48,547 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-21 23:36:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:36:48,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 23:36:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:48,555 INFO L225 Difference]: With dead ends: 288 [2020-08-21 23:36:48,557 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 23:36:48,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:36:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 23:36:48,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-21 23:36:48,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-21 23:36:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-21 23:36:48,642 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-21 23:36:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:48,643 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-21 23:36:48,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:36:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-21 23:36:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 23:36:48,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:48,658 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] [2020-08-21 23:36:48,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:36:48,660 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:48,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-21 23:36:48,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:48,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71792] [2020-08-21 23:36:48,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,075 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 23:36:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:36:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:49,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71792] [2020-08-21 23:36:49,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:49,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:36:49,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949189869] [2020-08-21 23:36:49,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:36:49,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:49,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:36:49,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:36:49,221 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-21 23:36:49,583 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:49,901 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:50,167 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:50,387 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:51,196 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:53,606 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-21 23:36:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 23:36:53,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 23:36:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:53,612 INFO L225 Difference]: With dead ends: 503 [2020-08-21 23:36:53,612 INFO L226 Difference]: Without dead ends: 382 [2020-08-21 23:36:53,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:36:53,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-21 23:36:53,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-21 23:36:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-21 23:36:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-21 23:36:53,703 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-21 23:36:53,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:53,704 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-21 23:36:53,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:36:53,704 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-21 23:36:53,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 23:36:53,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:53,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:36:53,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:36:53,706 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:53,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:53,707 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-21 23:36:53,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:53,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193427875] [2020-08-21 23:36:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,023 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:54,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:36:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:36:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 23:36:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:54,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193427875] [2020-08-21 23:36:54,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:54,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:36:54,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589540173] [2020-08-21 23:36:54,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:36:54,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:54,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:36:54,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:36:54,164 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-21 23:36:54,500 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:55,505 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:55,935 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:56,168 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:56,429 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:58,267 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-21 23:36:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 23:36:58,267 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 23:36:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:58,274 INFO L225 Difference]: With dead ends: 992 [2020-08-21 23:36:58,274 INFO L226 Difference]: Without dead ends: 711 [2020-08-21 23:36:58,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 23:36:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-21 23:36:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-21 23:36:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-21 23:36:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-21 23:36:58,419 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-21 23:36:58,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:58,419 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-21 23:36:58,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:36:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-21 23:36:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 23:36:58,422 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:58,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:36:58,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:36:58,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-21 23:36:58,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:58,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26982719] [2020-08-21 23:36:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,712 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:36:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:36:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 23:36:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 23:36:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:58,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26982719] [2020-08-21 23:36:58,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:58,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 23:36:58,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659025514] [2020-08-21 23:36:58,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:36:58,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:58,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:36:58,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:36:58,864 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-21 23:36:59,301 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:37:00,373 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:37:00,650 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:37:00,907 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:37:01,649 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:37:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:03,227 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-21 23:37:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 23:37:03,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 23:37:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:03,237 INFO L225 Difference]: With dead ends: 1565 [2020-08-21 23:37:03,237 INFO L226 Difference]: Without dead ends: 1027 [2020-08-21 23:37:03,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 23:37:03,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-21 23:37:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-21 23:37:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-21 23:37:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-21 23:37:03,444 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-21 23:37:03,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:03,446 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-21 23:37:03,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:37:03,446 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-21 23:37:03,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 23:37:03,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:03,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:03,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:37:03,449 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:03,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:03,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-21 23:37:03,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:03,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304552809] [2020-08-21 23:37:03,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,731 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:37:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:37:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:37:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:37:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 23:37:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 23:37:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:37:03,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304552809] [2020-08-21 23:37:03,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:03,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 23:37:03,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473528699] [2020-08-21 23:37:03,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:37:03,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:37:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:37:03,928 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-21 23:37:05,051 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:37:05,312 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:37:05,577 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:05,870 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:07,393 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-21 23:37:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 23:37:07,394 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-21 23:37:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:07,405 INFO L225 Difference]: With dead ends: 1894 [2020-08-21 23:37:07,406 INFO L226 Difference]: Without dead ends: 1101 [2020-08-21 23:37:07,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:37:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-21 23:37:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-21 23:37:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-21 23:37:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-21 23:37:07,609 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-21 23:37:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:07,609 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-21 23:37:07,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:37:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-21 23:37:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 23:37:07,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:07,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:07,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:37:07,614 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-21 23:37:07,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:07,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855173672] [2020-08-21 23:37:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,916 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:07,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:37:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:37:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:37:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:37:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 23:37:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 23:37:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:37:08,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855173672] [2020-08-21 23:37:08,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:08,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:37:08,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481786563] [2020-08-21 23:37:08,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:37:08,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:08,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:37:08,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:37:08,086 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-21 23:37:08,534 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:08,790 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:09,037 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:09,903 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:10,182 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:10,430 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:12,075 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-21 23:37:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:37:12,076 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-21 23:37:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:12,090 INFO L225 Difference]: With dead ends: 1948 [2020-08-21 23:37:12,091 INFO L226 Difference]: Without dead ends: 1129 [2020-08-21 23:37:12,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 23:37:12,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-21 23:37:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-21 23:37:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-21 23:37:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-21 23:37:12,314 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-21 23:37:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:12,314 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-21 23:37:12,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:37:12,314 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-21 23:37:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 23:37:12,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:12,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:12,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:37:12,317 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-21 23:37:12,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:12,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122968337] [2020-08-21 23:37:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,619 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:37:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:37:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:37:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:37:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 23:37:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 23:37:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:37:12,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122968337] [2020-08-21 23:37:12,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:12,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:37:12,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623839879] [2020-08-21 23:37:12,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:37:12,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:12,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:37:12,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:37:12,819 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-21 23:37:13,150 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:37:13,904 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:37:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:17,126 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-21 23:37:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 23:37:17,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-21 23:37:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:17,144 INFO L225 Difference]: With dead ends: 2919 [2020-08-21 23:37:17,145 INFO L226 Difference]: Without dead ends: 2084 [2020-08-21 23:37:17,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 23:37:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-21 23:37:17,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-21 23:37:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-21 23:37:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-21 23:37:17,590 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-21 23:37:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:17,590 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-21 23:37:17,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:37:17,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-21 23:37:17,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 23:37:17,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:17,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:17,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:37:17,594 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:17,595 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-21 23:37:17,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:17,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478778445] [2020-08-21 23:37:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,859 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:17,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:37:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:37:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:37:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:37:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 23:37:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 23:37:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:37:17,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478778445] [2020-08-21 23:37:17,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:17,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:37:17,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116787393] [2020-08-21 23:37:17,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:37:17,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:37:17,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:37:17,977 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-21 23:37:18,338 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:37:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:21,645 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-21 23:37:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 23:37:21,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-21 23:37:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:21,669 INFO L225 Difference]: With dead ends: 3491 [2020-08-21 23:37:21,670 INFO L226 Difference]: Without dead ends: 3488 [2020-08-21 23:37:21,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 23:37:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-21 23:37:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-21 23:37:22,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-21 23:37:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-21 23:37:22,313 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-21 23:37:22,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:22,315 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-21 23:37:22,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:37:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-21 23:37:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-21 23:37:22,326 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:22,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:22,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:37:22,327 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash 64107295, now seen corresponding path program 1 times [2020-08-21 23:37:22,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:22,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426817038] [2020-08-21 23:37:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,661 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:37:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:37:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:37:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:37:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 23:37:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:37:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 23:37:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 23:37:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:37:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:37:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-21 23:37:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:22,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-21 23:37:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-21 23:37:23,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426817038] [2020-08-21 23:37:23,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:37:23,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 23:37:23,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169445562] [2020-08-21 23:37:23,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 23:37:23,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:23,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 23:37:23,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-08-21 23:37:23,050 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 15 states. [2020-08-21 23:37:23,801 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:24,189 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:24,411 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:24,974 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:37:25,301 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:37:25,645 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:37:27,771 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:37:28,078 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:37:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:31,335 INFO L93 Difference]: Finished difference Result 5959 states and 7714 transitions. [2020-08-21 23:37:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-08-21 23:37:31,336 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 177 [2020-08-21 23:37:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:31,355 INFO L225 Difference]: With dead ends: 5959 [2020-08-21 23:37:31,355 INFO L226 Difference]: Without dead ends: 3105 [2020-08-21 23:37:31,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=800, Invalid=4170, Unknown=0, NotChecked=0, Total=4970 [2020-08-21 23:37:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2020-08-21 23:37:31,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 2718. [2020-08-21 23:37:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2718 states. [2020-08-21 23:37:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 3154 transitions. [2020-08-21 23:37:31,999 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 3154 transitions. Word has length 177 [2020-08-21 23:37:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:32,000 INFO L479 AbstractCegarLoop]: Abstraction has 2718 states and 3154 transitions. [2020-08-21 23:37:32,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 23:37:32,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 3154 transitions. [2020-08-21 23:37:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-21 23:37:32,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:32,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2020-08-21 23:37:32,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:37:32,008 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:32,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-21 23:37:32,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:32,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814918203] [2020-08-21 23:37:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,299 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:37:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:37:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:37:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:37:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 23:37:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:37:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 23:37:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 23:37:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:37:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:37:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-21 23:37:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-21 23:37:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-21 23:37:32,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814918203] [2020-08-21 23:37:32,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:37:32,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 23:37:32,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627454532] [2020-08-21 23:37:32,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:37:32,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:32,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:37:32,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:37:32,522 INFO L87 Difference]: Start difference. First operand 2718 states and 3154 transitions. Second operand 10 states. [2020-08-21 23:37:33,445 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:37:35,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:35,894 INFO L93 Difference]: Finished difference Result 4518 states and 5459 transitions. [2020-08-21 23:37:35,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-21 23:37:35,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-21 23:37:35,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:35,907 INFO L225 Difference]: With dead ends: 4518 [2020-08-21 23:37:35,907 INFO L226 Difference]: Without dead ends: 1828 [2020-08-21 23:37:35,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 23:37:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-08-21 23:37:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1247. [2020-08-21 23:37:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-21 23:37:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1429 transitions. [2020-08-21 23:37:36,173 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1429 transitions. Word has length 171 [2020-08-21 23:37:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:36,173 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1429 transitions. [2020-08-21 23:37:36,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:37:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1429 transitions. [2020-08-21 23:37:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-21 23:37:36,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:36,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:36,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:37:36,180 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:36,180 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-21 23:37:36,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:36,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192366964] [2020-08-21 23:37:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat