/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:44:39,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:44:39,442 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 22:44:39,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:44:39,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:44:39,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:44:39,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:44:39,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:44:39,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:44:39,472 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:44:39,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:44:39,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:44:39,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:44:39,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:44:39,475 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:44:39,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:44:39,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:44:39,476 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:44:39,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:44:39,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:44:39,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:44:39,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:44:39,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:44:39,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:44:39,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:44:39,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:44:39,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:44:39,478 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:44:39,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:44:39,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:44:39,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:44:39,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:44:39,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:44:39,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:44:39,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:44:39,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:44:39,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:44:39,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:44:39,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:44:39,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:44:39,481 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:44:39,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:44:39,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:44:39,481 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:44:39,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:44:39,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:44:39,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:44:39,728 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:44:39,728 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:44:39,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2023-12-19 22:44:40,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:44:41,136 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:44:41,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2023-12-19 22:44:41,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53557a10c/7025ae71326244449c2eb2e1914cbb1b/FLAG00e2e449c [2023-12-19 22:44:41,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53557a10c/7025ae71326244449c2eb2e1914cbb1b [2023-12-19 22:44:41,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:44:41,163 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:44:41,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:44:41,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:44:41,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:44:41,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1ef14b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41, skipping insertion in model container [2023-12-19 22:44:41,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:44:41,583 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2023-12-19 22:44:41,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:44:41,598 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:44:41,604 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-12-19 22:44:41,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [67] [2023-12-19 22:44:41,605 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [425] [2023-12-19 22:44:41,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [545] [2023-12-19 22:44:41,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [641] [2023-12-19 22:44:41,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2290] [2023-12-19 22:44:41,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2951] [2023-12-19 22:44:41,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3138] [2023-12-19 22:44:41,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3504] [2023-12-19 22:44:41,606 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3539] [2023-12-19 22:44:41,660 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2023-12-19 22:44:41,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:44:41,678 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:44:41,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41 WrapperNode [2023-12-19 22:44:41,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:44:41,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:44:41,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:44:41,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:44:41,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,743 INFO L138 Inliner]: procedures = 96, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 965 [2023-12-19 22:44:41,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:44:41,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:44:41,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:44:41,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:44:41,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,774 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-12-19 22:44:41,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:44:41,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:44:41,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:44:41,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:44:41,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (1/1) ... [2023-12-19 22:44:41,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:44:41,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:44:41,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 22:44:41,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 22:44:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:44:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-19 22:44:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-19 22:44:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-12-19 22:44:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-12-19 22:44:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-19 22:44:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-19 22:44:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-19 22:44:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-19 22:44:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-19 22:44:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-19 22:44:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-19 22:44:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-19 22:44:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-12-19 22:44:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-12-19 22:44:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-19 22:44:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-19 22:44:41,890 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-19 22:44:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-19 22:44:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-19 22:44:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-19 22:44:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-19 22:44:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-19 22:44:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-19 22:44:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-19 22:44:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-19 22:44:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-19 22:44:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-19 22:44:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-19 22:44:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-19 22:44:41,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-19 22:44:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-12-19 22:44:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-12-19 22:44:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-19 22:44:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-19 22:44:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-12-19 22:44:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-12-19 22:44:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-19 22:44:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-19 22:44:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-19 22:44:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-19 22:44:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-19 22:44:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-19 22:44:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-19 22:44:41,893 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-19 22:44:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-19 22:44:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-19 22:44:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-19 22:44:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-19 22:44:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-19 22:44:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-12-19 22:44:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-12-19 22:44:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-19 22:44:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-19 22:44:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-19 22:44:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-19 22:44:41,896 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-19 22:44:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-19 22:44:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-19 22:44:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-19 22:44:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 22:44:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-12-19 22:44:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:44:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:44:41,897 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-19 22:44:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-19 22:44:41,898 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-12-19 22:44:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-12-19 22:44:42,074 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:44:42,076 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:44:42,872 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:44:42,927 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:44:42,927 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:44:42,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:44:42 BoogieIcfgContainer [2023-12-19 22:44:42,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:44:42,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:44:42,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:44:42,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:44:42,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:44:41" (1/3) ... [2023-12-19 22:44:42,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b3d5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:44:42, skipping insertion in model container [2023-12-19 22:44:42,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:44:41" (2/3) ... [2023-12-19 22:44:42,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b3d5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:44:42, skipping insertion in model container [2023-12-19 22:44:42,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:44:42" (3/3) ... [2023-12-19 22:44:42,933 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2023-12-19 22:44:42,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:44:42,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:44:42,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:44:42,989 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1413b7d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:44:42,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:44:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 451 states have (on average 1.6917960088691797) internal successors, (763), 471 states have internal predecessors, (763), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2023-12-19 22:44:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-19 22:44:43,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:44:43,004 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:44:43,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:44:43,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:44:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -221937079, now seen corresponding path program 1 times [2023-12-19 22:44:43,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:44:43,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147073631] [2023-12-19 22:44:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:44:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:44:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:44:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:44:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:44:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:44:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:44:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:44,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:44:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:44:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 22:44:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:44:44,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:44:44,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147073631] [2023-12-19 22:44:44,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147073631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:44:44,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:44:44,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:44:44,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20397829] [2023-12-19 22:44:44,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:44:44,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:44:44,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:44:44,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:44:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:44:44,160 INFO L87 Difference]: Start difference. First operand has 597 states, 451 states have (on average 1.6917960088691797) internal successors, (763), 471 states have internal predecessors, (763), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:44:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:44:49,779 INFO L93 Difference]: Finished difference Result 1460 states and 2525 transitions. [2023-12-19 22:44:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:44:49,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2023-12-19 22:44:49,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:44:49,809 INFO L225 Difference]: With dead ends: 1460 [2023-12-19 22:44:49,809 INFO L226 Difference]: Without dead ends: 864 [2023-12-19 22:44:49,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:44:49,822 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1559 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 5234 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 5643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 5234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:44:49,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 2596 Invalid, 5643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [409 Valid, 5234 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 22:44:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-12-19 22:44:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 603. [2023-12-19 22:44:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 457 states have (on average 1.6783369803063457) internal successors, (767), 477 states have internal predecessors, (767), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2023-12-19 22:44:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 998 transitions. [2023-12-19 22:44:50,014 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 998 transitions. Word has length 56 [2023-12-19 22:44:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:44:50,015 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 998 transitions. [2023-12-19 22:44:50,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:44:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 998 transitions. [2023-12-19 22:44:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 22:44:50,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:44:50,022 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:44:50,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 22:44:50,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:44:50,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:44:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1826531325, now seen corresponding path program 1 times [2023-12-19 22:44:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:44:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078664322] [2023-12-19 22:44:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:44:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:44:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:44:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:44:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:44:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:44:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:44:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:44:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 22:44:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:44:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:44:50,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:44:50,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078664322] [2023-12-19 22:44:50,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078664322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:44:50,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:44:50,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:44:50,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028958515] [2023-12-19 22:44:50,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:44:50,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:44:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:44:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:44:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:44:50,565 INFO L87 Difference]: Start difference. First operand 603 states and 998 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:44:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:44:56,828 INFO L93 Difference]: Finished difference Result 1458 states and 2493 transitions. [2023-12-19 22:44:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 22:44:56,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 57 [2023-12-19 22:44:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:44:56,836 INFO L225 Difference]: With dead ends: 1458 [2023-12-19 22:44:56,836 INFO L226 Difference]: Without dead ends: 865 [2023-12-19 22:44:56,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-19 22:44:56,841 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 895 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 5435 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 5635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 5435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-19 22:44:56,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 2312 Invalid, 5635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [200 Valid, 5435 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-19 22:44:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2023-12-19 22:44:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 603. [2023-12-19 22:44:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 457 states have (on average 1.676148796498906) internal successors, (766), 477 states have internal predecessors, (766), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2023-12-19 22:44:56,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 997 transitions. [2023-12-19 22:44:56,924 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 997 transitions. Word has length 57 [2023-12-19 22:44:56,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:44:56,924 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 997 transitions. [2023-12-19 22:44:56,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:44:56,924 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 997 transitions. [2023-12-19 22:44:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 22:44:56,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:44:56,925 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:44:56,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 22:44:56,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:44:56,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:44:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash 119453093, now seen corresponding path program 1 times [2023-12-19 22:44:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:44:56,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601658105] [2023-12-19 22:44:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:44:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:44:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:44:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:44:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:44:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:44:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:44:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-19 22:44:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 22:44:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:44:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:44:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:44:57,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:44:57,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601658105] [2023-12-19 22:44:57,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601658105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:44:57,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:44:57,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:44:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245447155] [2023-12-19 22:44:57,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:44:57,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:44:57,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:44:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:44:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:44:57,438 INFO L87 Difference]: Start difference. First operand 603 states and 997 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:45:01,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:01,852 INFO L93 Difference]: Finished difference Result 1451 states and 2475 transitions. [2023-12-19 22:45:01,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 22:45:01,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-12-19 22:45:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:01,858 INFO L225 Difference]: With dead ends: 1451 [2023-12-19 22:45:01,858 INFO L226 Difference]: Without dead ends: 829 [2023-12-19 22:45:01,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:45:01,862 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 833 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 3096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:01,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1400 Invalid, 3096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 22:45:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-19 22:45:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 580. [2023-12-19 22:45:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 437 states have (on average 1.665903890160183) internal successors, (728), 455 states have internal predecessors, (728), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 955 transitions. [2023-12-19 22:45:01,933 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 955 transitions. Word has length 57 [2023-12-19 22:45:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:01,933 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 955 transitions. [2023-12-19 22:45:01,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 22:45:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 955 transitions. [2023-12-19 22:45:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 22:45:01,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:01,934 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:01,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 22:45:01,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:01,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1335546691, now seen corresponding path program 1 times [2023-12-19 22:45:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621074109] [2023-12-19 22:45:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:45:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:45:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:45:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:02,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621074109] [2023-12-19 22:45:02,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621074109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:02,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:02,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:02,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804547424] [2023-12-19 22:45:02,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:02,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:02,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:02,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:02,667 INFO L87 Difference]: Start difference. First operand 580 states and 955 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:07,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:07,650 INFO L93 Difference]: Finished difference Result 1415 states and 2407 transitions. [2023-12-19 22:45:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:45:07,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 58 [2023-12-19 22:45:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:07,655 INFO L225 Difference]: With dead ends: 1415 [2023-12-19 22:45:07,655 INFO L226 Difference]: Without dead ends: 823 [2023-12-19 22:45:07,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:45:07,658 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1482 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 5467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:07,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 2548 Invalid, 5467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 22:45:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-12-19 22:45:07,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 574. [2023-12-19 22:45:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 431 states have (on average 1.6589327146171693) internal successors, (715), 449 states have internal predecessors, (715), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 942 transitions. [2023-12-19 22:45:07,718 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 942 transitions. Word has length 58 [2023-12-19 22:45:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:07,718 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 942 transitions. [2023-12-19 22:45:07,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 942 transitions. [2023-12-19 22:45:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 22:45:07,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:07,719 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:07,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 22:45:07,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:07,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1824274971, now seen corresponding path program 1 times [2023-12-19 22:45:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:07,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564676054] [2023-12-19 22:45:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:08,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 22:45:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:08,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:45:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:45:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:08,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:08,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564676054] [2023-12-19 22:45:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564676054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:08,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:08,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:08,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326220542] [2023-12-19 22:45:08,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:08,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:08,207 INFO L87 Difference]: Start difference. First operand 574 states and 942 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:13,181 INFO L93 Difference]: Finished difference Result 1387 states and 2358 transitions. [2023-12-19 22:45:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:45:13,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 59 [2023-12-19 22:45:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:13,186 INFO L225 Difference]: With dead ends: 1387 [2023-12-19 22:45:13,186 INFO L226 Difference]: Without dead ends: 823 [2023-12-19 22:45:13,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:45:13,189 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1420 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:13,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 2307 Invalid, 5372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [420 Valid, 4952 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 22:45:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-12-19 22:45:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 574. [2023-12-19 22:45:13,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 431 states have (on average 1.6566125290023201) internal successors, (714), 449 states have internal predecessors, (714), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 941 transitions. [2023-12-19 22:45:13,257 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 941 transitions. Word has length 59 [2023-12-19 22:45:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:13,259 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 941 transitions. [2023-12-19 22:45:13,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:13,260 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 941 transitions. [2023-12-19 22:45:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 22:45:13,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:13,261 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:13,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 22:45:13,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:13,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:13,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1002791488, now seen corresponding path program 1 times [2023-12-19 22:45:13,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:13,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281848204] [2023-12-19 22:45:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:45:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:45:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:45:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:13,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:13,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281848204] [2023-12-19 22:45:13,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281848204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:13,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:13,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:13,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197372485] [2023-12-19 22:45:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:13,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:13,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:13,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:13,806 INFO L87 Difference]: Start difference. First operand 574 states and 941 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:19,296 INFO L93 Difference]: Finished difference Result 1403 states and 2376 transitions. [2023-12-19 22:45:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:45:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2023-12-19 22:45:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:19,301 INFO L225 Difference]: With dead ends: 1403 [2023-12-19 22:45:19,301 INFO L226 Difference]: Without dead ends: 817 [2023-12-19 22:45:19,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:45:19,303 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 865 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 5299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:19,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 2385 Invalid, 5299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 22:45:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-19 22:45:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 568. [2023-12-19 22:45:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 425 states have (on average 1.6494117647058824) internal successors, (701), 443 states have internal predecessors, (701), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 928 transitions. [2023-12-19 22:45:19,364 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 928 transitions. Word has length 60 [2023-12-19 22:45:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:19,364 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 928 transitions. [2023-12-19 22:45:19,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 928 transitions. [2023-12-19 22:45:19,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 22:45:19,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:19,365 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 22:45:19,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:19,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:19,365 INFO L85 PathProgramCache]: Analyzing trace with hash -299067782, now seen corresponding path program 1 times [2023-12-19 22:45:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097973290] [2023-12-19 22:45:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 22:45:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-19 22:45:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:45:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:19,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097973290] [2023-12-19 22:45:19,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097973290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:19,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:19,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:19,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372739190] [2023-12-19 22:45:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:19,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:19,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:19,819 INFO L87 Difference]: Start difference. First operand 568 states and 928 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:25,224 INFO L93 Difference]: Finished difference Result 1375 states and 2329 transitions. [2023-12-19 22:45:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:45:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2023-12-19 22:45:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:25,229 INFO L225 Difference]: With dead ends: 1375 [2023-12-19 22:45:25,229 INFO L226 Difference]: Without dead ends: 817 [2023-12-19 22:45:25,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:45:25,231 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 820 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 5028 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 5216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 5028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:25,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 2505 Invalid, 5216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 5028 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 22:45:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-19 22:45:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 568. [2023-12-19 22:45:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 425 states have (on average 1.6470588235294117) internal successors, (700), 443 states have internal predecessors, (700), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:25,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 927 transitions. [2023-12-19 22:45:25,297 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 927 transitions. Word has length 61 [2023-12-19 22:45:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:25,297 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 927 transitions. [2023-12-19 22:45:25,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 927 transitions. [2023-12-19 22:45:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 22:45:25,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:25,298 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:25,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 22:45:25,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:25,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:25,298 INFO L85 PathProgramCache]: Analyzing trace with hash 436168284, now seen corresponding path program 1 times [2023-12-19 22:45:25,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:25,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653660428] [2023-12-19 22:45:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:25,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:45:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:45:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:45:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:25,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:25,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653660428] [2023-12-19 22:45:25,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653660428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:25,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:25,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:25,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477443408] [2023-12-19 22:45:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:25,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:25,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:25,770 INFO L87 Difference]: Start difference. First operand 568 states and 927 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:30,441 INFO L93 Difference]: Finished difference Result 1391 states and 2345 transitions. [2023-12-19 22:45:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:45:30,441 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2023-12-19 22:45:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:30,447 INFO L225 Difference]: With dead ends: 1391 [2023-12-19 22:45:30,447 INFO L226 Difference]: Without dead ends: 811 [2023-12-19 22:45:30,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:45:30,450 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1446 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 5236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:30,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 2143 Invalid, 5236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 22:45:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-12-19 22:45:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 562. [2023-12-19 22:45:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 419 states have (on average 1.639618138424821) internal successors, (687), 437 states have internal predecessors, (687), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 914 transitions. [2023-12-19 22:45:30,512 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 914 transitions. Word has length 62 [2023-12-19 22:45:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:30,512 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 914 transitions. [2023-12-19 22:45:30,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:30,513 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 914 transitions. [2023-12-19 22:45:30,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 22:45:30,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:30,513 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:30,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 22:45:30,513 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:30,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:30,514 INFO L85 PathProgramCache]: Analyzing trace with hash 656093661, now seen corresponding path program 1 times [2023-12-19 22:45:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931103798] [2023-12-19 22:45:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:45:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 22:45:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:45:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931103798] [2023-12-19 22:45:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931103798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:30,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:30,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612240284] [2023-12-19 22:45:30,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:30,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:30,955 INFO L87 Difference]: Start difference. First operand 562 states and 914 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:36,295 INFO L93 Difference]: Finished difference Result 1363 states and 2300 transitions. [2023-12-19 22:45:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:45:36,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2023-12-19 22:45:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:36,313 INFO L225 Difference]: With dead ends: 1363 [2023-12-19 22:45:36,313 INFO L226 Difference]: Without dead ends: 811 [2023-12-19 22:45:36,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:45:36,315 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1366 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 4756 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 5174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:36,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2338 Invalid, 5174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 4756 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 22:45:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-12-19 22:45:36,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 562. [2023-12-19 22:45:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 419 states have (on average 1.6372315035799523) internal successors, (686), 437 states have internal predecessors, (686), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 913 transitions. [2023-12-19 22:45:36,378 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 913 transitions. Word has length 62 [2023-12-19 22:45:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:36,378 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 913 transitions. [2023-12-19 22:45:36,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 913 transitions. [2023-12-19 22:45:36,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 22:45:36,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:36,379 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:36,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 22:45:36,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:36,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash 813894644, now seen corresponding path program 1 times [2023-12-19 22:45:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496270274] [2023-12-19 22:45:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:36,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:45:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:45:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:45:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:36,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:36,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496270274] [2023-12-19 22:45:36,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496270274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:36,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:36,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:36,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234573659] [2023-12-19 22:45:36,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:36,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:36,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:36,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:36,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:36,849 INFO L87 Difference]: Start difference. First operand 562 states and 913 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:41,717 INFO L93 Difference]: Finished difference Result 1372 states and 2307 transitions. [2023-12-19 22:45:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:45:41,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2023-12-19 22:45:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:41,735 INFO L225 Difference]: With dead ends: 1372 [2023-12-19 22:45:41,735 INFO L226 Difference]: Without dead ends: 820 [2023-12-19 22:45:41,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:45:41,737 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1389 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 4793 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 5212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 4793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:41,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 2348 Invalid, 5212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 4793 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:45:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-12-19 22:45:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 568. [2023-12-19 22:45:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 425 states have (on average 1.628235294117647) internal successors, (692), 443 states have internal predecessors, (692), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 919 transitions. [2023-12-19 22:45:41,832 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 919 transitions. Word has length 63 [2023-12-19 22:45:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:41,832 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 919 transitions. [2023-12-19 22:45:41,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 919 transitions. [2023-12-19 22:45:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 22:45:41,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:41,833 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:41,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:45:41,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:41,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1430088654, now seen corresponding path program 1 times [2023-12-19 22:45:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565381308] [2023-12-19 22:45:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:45:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-19 22:45:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:45:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:42,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565381308] [2023-12-19 22:45:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565381308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:42,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:42,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:45:42,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664655562] [2023-12-19 22:45:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:42,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:45:42,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:45:42,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:42,323 INFO L87 Difference]: Start difference. First operand 568 states and 919 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:47,675 INFO L93 Difference]: Finished difference Result 1377 states and 2310 transitions. [2023-12-19 22:45:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:45:47,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2023-12-19 22:45:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:47,692 INFO L225 Difference]: With dead ends: 1377 [2023-12-19 22:45:47,692 INFO L226 Difference]: Without dead ends: 811 [2023-12-19 22:45:47,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:45:47,695 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 809 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 4888 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 5081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 4888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:47,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 2381 Invalid, 5081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 4888 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 22:45:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-12-19 22:45:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 562. [2023-12-19 22:45:47,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 419 states have (on average 1.6348448687350836) internal successors, (685), 437 states have internal predecessors, (685), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 22:45:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 912 transitions. [2023-12-19 22:45:47,760 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 912 transitions. Word has length 63 [2023-12-19 22:45:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:47,760 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 912 transitions. [2023-12-19 22:45:47,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 912 transitions. [2023-12-19 22:45:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 22:45:47,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:47,761 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:47,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 22:45:47,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:47,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash -766382025, now seen corresponding path program 1 times [2023-12-19 22:45:47,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:47,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856059017] [2023-12-19 22:45:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:47,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:45:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:45:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:45:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:45:48,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:48,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856059017] [2023-12-19 22:45:48,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856059017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:48,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:45:48,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:45:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813130468] [2023-12-19 22:45:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:45:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:45:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:45:48,250 INFO L87 Difference]: Start difference. First operand 562 states and 912 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 22:45:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:55,931 INFO L93 Difference]: Finished difference Result 2104 states and 3592 transitions. [2023-12-19 22:45:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:45:55,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2023-12-19 22:45:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:55,940 INFO L225 Difference]: With dead ends: 2104 [2023-12-19 22:45:55,940 INFO L226 Difference]: Without dead ends: 1554 [2023-12-19 22:45:55,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-19 22:45:55,942 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 3115 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 4633 mSolverCounterSat, 1048 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 2131 SdHoareTripleChecker+Invalid, 5681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1048 IncrementalHoareTripleChecker+Valid, 4633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:55,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3262 Valid, 2131 Invalid, 5681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1048 Valid, 4633 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 22:45:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2023-12-19 22:45:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1210. [2023-12-19 22:45:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 864 states have (on average 1.5821759259259258) internal successors, (1367), 918 states have internal predecessors, (1367), 287 states have call successors, (287), 55 states have call predecessors, (287), 58 states have return successors, (365), 279 states have call predecessors, (365), 283 states have call successors, (365) [2023-12-19 22:45:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 2019 transitions. [2023-12-19 22:45:56,132 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 2019 transitions. Word has length 64 [2023-12-19 22:45:56,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:56,133 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 2019 transitions. [2023-12-19 22:45:56,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 22:45:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 2019 transitions. [2023-12-19 22:45:56,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 22:45:56,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:56,133 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:56,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 22:45:56,134 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2020797129, now seen corresponding path program 1 times [2023-12-19 22:45:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035418723] [2023-12-19 22:45:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:45:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:45:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:45:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 22:45:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:56,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035418723] [2023-12-19 22:45:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035418723] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:45:56,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770713060] [2023-12-19 22:45:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:56,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:45:56,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:45:56,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:45:56,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 22:45:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:56,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:45:56,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:45:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:45:56,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:45:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770713060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:56,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:45:56,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 22:45:56,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283143610] [2023-12-19 22:45:56,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:56,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:45:56,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:56,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:45:56,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:56,824 INFO L87 Difference]: Start difference. First operand 1210 states and 2019 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:57,214 INFO L93 Difference]: Finished difference Result 3514 states and 5947 transitions. [2023-12-19 22:45:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:45:57,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2023-12-19 22:45:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:57,224 INFO L225 Difference]: With dead ends: 3514 [2023-12-19 22:45:57,224 INFO L226 Difference]: Without dead ends: 2316 [2023-12-19 22:45:57,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:57,228 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 877 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:57,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 2385 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:45:57,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2023-12-19 22:45:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2258. [2023-12-19 22:45:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2258 states, 1615 states have (on average 1.5944272445820433) internal successors, (2575), 1723 states have internal predecessors, (2575), 531 states have call successors, (531), 100 states have call predecessors, (531), 111 states have return successors, (700), 520 states have call predecessors, (700), 527 states have call successors, (700) [2023-12-19 22:45:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2258 states to 2258 states and 3806 transitions. [2023-12-19 22:45:57,592 INFO L78 Accepts]: Start accepts. Automaton has 2258 states and 3806 transitions. Word has length 64 [2023-12-19 22:45:57,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:57,592 INFO L495 AbstractCegarLoop]: Abstraction has 2258 states and 3806 transitions. [2023-12-19 22:45:57,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2258 states and 3806 transitions. [2023-12-19 22:45:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 22:45:57,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:57,593 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:57,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 22:45:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 22:45:57,800 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:57,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2097190565, now seen corresponding path program 1 times [2023-12-19 22:45:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:57,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176984689] [2023-12-19 22:45:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:57,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:45:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:45:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:45:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:45:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:45:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:45:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:45:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 22:45:58,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:45:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176984689] [2023-12-19 22:45:58,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176984689] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:45:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385968484] [2023-12-19 22:45:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:58,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:45:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:45:58,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:45:58,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 22:45:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:45:58,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:45:58,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:45:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 22:45:58,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:45:58,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385968484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:45:58,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:45:58,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 22:45:58,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046524467] [2023-12-19 22:45:58,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:45:58,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:45:58,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:45:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:45:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:58,561 INFO L87 Difference]: Start difference. First operand 2258 states and 3806 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:45:59,074 INFO L93 Difference]: Finished difference Result 5152 states and 8766 transitions. [2023-12-19 22:45:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:45:59,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2023-12-19 22:45:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:45:59,089 INFO L225 Difference]: With dead ends: 5152 [2023-12-19 22:45:59,089 INFO L226 Difference]: Without dead ends: 2906 [2023-12-19 22:45:59,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:45:59,098 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 875 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:45:59,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1692 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:45:59,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2023-12-19 22:45:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2703. [2023-12-19 22:45:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 1953 states have (on average 1.6067588325652842) internal successors, (3138), 2078 states have internal predecessors, (3138), 616 states have call successors, (616), 121 states have call predecessors, (616), 133 states have return successors, (789), 603 states have call predecessors, (789), 612 states have call successors, (789) [2023-12-19 22:45:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 4543 transitions. [2023-12-19 22:45:59,549 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 4543 transitions. Word has length 65 [2023-12-19 22:45:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:45:59,550 INFO L495 AbstractCegarLoop]: Abstraction has 2703 states and 4543 transitions. [2023-12-19 22:45:59,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 22:45:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 4543 transitions. [2023-12-19 22:45:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-19 22:45:59,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:45:59,550 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:45:59,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 22:45:59,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-19 22:45:59,760 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:45:59,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:45:59,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1869032740, now seen corresponding path program 1 times [2023-12-19 22:45:59,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:45:59,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323604191] [2023-12-19 22:45:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:45:59,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:45:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:46:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:46:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:46:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:46:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:46:00,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323604191] [2023-12-19 22:46:00,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323604191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:00,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:00,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:46:00,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536399570] [2023-12-19 22:46:00,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:00,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:46:00,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:00,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:46:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:46:00,260 INFO L87 Difference]: Start difference. First operand 2703 states and 4543 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:46:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:09,027 INFO L93 Difference]: Finished difference Result 9570 states and 16869 transitions. [2023-12-19 22:46:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:09,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 67 [2023-12-19 22:46:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:09,067 INFO L225 Difference]: With dead ends: 9570 [2023-12-19 22:46:09,067 INFO L226 Difference]: Without dead ends: 6879 [2023-12-19 22:46:09,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:09,086 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 3551 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 4642 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3695 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 5786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 4642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:09,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3695 Valid, 2027 Invalid, 5786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1144 Valid, 4642 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 22:46:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6879 states. [2023-12-19 22:46:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6879 to 5948. [2023-12-19 22:46:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 4162 states have (on average 1.5836136472849591) internal successors, (6591), 4507 states have internal predecessors, (6591), 1472 states have call successors, (1472), 236 states have call predecessors, (1472), 313 states have return successors, (2386), 1470 states have call predecessors, (2386), 1466 states have call successors, (2386) [2023-12-19 22:46:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 10449 transitions. [2023-12-19 22:46:10,442 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 10449 transitions. Word has length 67 [2023-12-19 22:46:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:10,442 INFO L495 AbstractCegarLoop]: Abstraction has 5948 states and 10449 transitions. [2023-12-19 22:46:10,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-19 22:46:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 10449 transitions. [2023-12-19 22:46:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 22:46:10,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:10,443 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:46:10,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 22:46:10,443 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:10,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:10,443 INFO L85 PathProgramCache]: Analyzing trace with hash -908117149, now seen corresponding path program 1 times [2023-12-19 22:46:10,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:10,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849475607] [2023-12-19 22:46:10,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:10,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:46:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:46:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:46:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:46:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 22:46:10,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:10,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849475607] [2023-12-19 22:46:10,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849475607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:10,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:10,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:46:10,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367048425] [2023-12-19 22:46:10,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:10,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:46:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:46:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:46:10,847 INFO L87 Difference]: Start difference. First operand 5948 states and 10449 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:46:16,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:16,613 INFO L93 Difference]: Finished difference Result 12763 states and 22826 transitions. [2023-12-19 22:46:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:46:16,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2023-12-19 22:46:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:16,651 INFO L225 Difference]: With dead ends: 12763 [2023-12-19 22:46:16,652 INFO L226 Difference]: Without dead ends: 6827 [2023-12-19 22:46:16,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:16,678 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 790 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:16,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1409 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 22:46:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6827 states. [2023-12-19 22:46:18,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6827 to 5956. [2023-12-19 22:46:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 4168 states have (on average 1.5822936660268714) internal successors, (6595), 4513 states have internal predecessors, (6595), 1472 states have call successors, (1472), 240 states have call predecessors, (1472), 315 states have return successors, (2376), 1468 states have call predecessors, (2376), 1466 states have call successors, (2376) [2023-12-19 22:46:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 10443 transitions. [2023-12-19 22:46:18,156 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 10443 transitions. Word has length 68 [2023-12-19 22:46:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:18,156 INFO L495 AbstractCegarLoop]: Abstraction has 5956 states and 10443 transitions. [2023-12-19 22:46:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-19 22:46:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 10443 transitions. [2023-12-19 22:46:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 22:46:18,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:18,158 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:46:18,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:46:18,158 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:18,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash -129727987, now seen corresponding path program 1 times [2023-12-19 22:46:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:18,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492649634] [2023-12-19 22:46:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:18,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:46:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:46:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:46:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:46:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:46:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 22:46:18,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:18,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492649634] [2023-12-19 22:46:18,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492649634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:18,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:18,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:46:18,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972637892] [2023-12-19 22:46:18,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:18,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:46:18,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:18,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:46:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:46:18,615 INFO L87 Difference]: Start difference. First operand 5956 states and 10443 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:46:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:29,861 INFO L93 Difference]: Finished difference Result 19595 states and 35878 transitions. [2023-12-19 22:46:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:29,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2023-12-19 22:46:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:29,918 INFO L225 Difference]: With dead ends: 19595 [2023-12-19 22:46:29,918 INFO L226 Difference]: Without dead ends: 13651 [2023-12-19 22:46:29,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:29,938 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 3412 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 4617 mSolverCounterSat, 1055 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 5672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1055 IncrementalHoareTripleChecker+Valid, 4617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:29,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3554 Valid, 2363 Invalid, 5672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1055 Valid, 4617 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-19 22:46:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13651 states. [2023-12-19 22:46:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13651 to 11970. [2023-12-19 22:46:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11970 states, 8331 states have (on average 1.5770015604369223) internal successors, (13138), 9029 states have internal predecessors, (13138), 3007 states have call successors, (3007), 474 states have call predecessors, (3007), 631 states have return successors, (5465), 3013 states have call predecessors, (5465), 2997 states have call successors, (5465) [2023-12-19 22:46:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11970 states to 11970 states and 21610 transitions. [2023-12-19 22:46:32,530 INFO L78 Accepts]: Start accepts. Automaton has 11970 states and 21610 transitions. Word has length 76 [2023-12-19 22:46:32,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:32,531 INFO L495 AbstractCegarLoop]: Abstraction has 11970 states and 21610 transitions. [2023-12-19 22:46:32,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 22:46:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 11970 states and 21610 transitions. [2023-12-19 22:46:32,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 22:46:32,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:32,532 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:46:32,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:46:32,532 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:32,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1324245022, now seen corresponding path program 1 times [2023-12-19 22:46:32,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:32,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079885859] [2023-12-19 22:46:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:32,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:46:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:46:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:46:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:46:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:46:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 22:46:32,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:32,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079885859] [2023-12-19 22:46:32,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079885859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:32,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:32,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:46:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318262550] [2023-12-19 22:46:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:32,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:46:32,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:32,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:46:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:46:32,953 INFO L87 Difference]: Start difference. First operand 11970 states and 21610 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:46:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:40,691 INFO L93 Difference]: Finished difference Result 25486 states and 47257 transitions. [2023-12-19 22:46:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:46:40,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2023-12-19 22:46:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:40,757 INFO L225 Difference]: With dead ends: 25486 [2023-12-19 22:46:40,757 INFO L226 Difference]: Without dead ends: 13528 [2023-12-19 22:46:40,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:46:40,798 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 797 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 2663 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:40,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1421 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2663 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 22:46:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13528 states. [2023-12-19 22:46:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13528 to 12010. [2023-12-19 22:46:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12010 states, 8367 states have (on average 1.5749970120712322) internal successors, (13178), 9057 states have internal predecessors, (13178), 3007 states have call successors, (3007), 490 states have call predecessors, (3007), 635 states have return successors, (5451), 3009 states have call predecessors, (5451), 2997 states have call successors, (5451) [2023-12-19 22:46:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 21636 transitions. [2023-12-19 22:46:43,583 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 21636 transitions. Word has length 77 [2023-12-19 22:46:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:46:43,583 INFO L495 AbstractCegarLoop]: Abstraction has 12010 states and 21636 transitions. [2023-12-19 22:46:43,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 22:46:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 21636 transitions. [2023-12-19 22:46:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 22:46:43,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:46:43,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-19 22:46:43,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:46:43,588 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:46:43,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:46:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1509885055, now seen corresponding path program 1 times [2023-12-19 22:46:43,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:46:43,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410065972] [2023-12-19 22:46:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:46:43,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:46:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:46:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:46:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:46:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:46:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:46:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:46:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:46:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:46:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:46:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 22:46:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:46:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 22:46:44,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:46:44,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410065972] [2023-12-19 22:46:44,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410065972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:46:44,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:46:44,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:46:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066872181] [2023-12-19 22:46:44,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:46:44,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:46:44,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:46:44,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:46:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:46:44,053 INFO L87 Difference]: Start difference. First operand 12010 states and 21636 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 22:46:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:46:57,863 INFO L93 Difference]: Finished difference Result 39262 states and 75341 transitions. [2023-12-19 22:46:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:46:57,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2023-12-19 22:46:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:46:58,262 INFO L225 Difference]: With dead ends: 39262 [2023-12-19 22:46:58,262 INFO L226 Difference]: Without dead ends: 27264 [2023-12-19 22:46:58,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:46:58,307 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 2293 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 4797 mSolverCounterSat, 688 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 5485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 4797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:46:58,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2435 Valid, 2311 Invalid, 5485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [688 Valid, 4797 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-19 22:46:58,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27264 states. [2023-12-19 22:47:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27264 to 24042. [2023-12-19 22:47:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24042 states, 16739 states have (on average 1.5717187406655118) internal successors, (26309), 18120 states have internal predecessors, (26309), 6025 states have call successors, (6025), 974 states have call predecessors, (6025), 1277 states have return successors, (12666), 6046 states have call predecessors, (12666), 6007 states have call successors, (12666) [2023-12-19 22:47:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24042 states to 24042 states and 45000 transitions. [2023-12-19 22:47:03,774 INFO L78 Accepts]: Start accepts. Automaton has 24042 states and 45000 transitions. Word has length 86 [2023-12-19 22:47:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:03,774 INFO L495 AbstractCegarLoop]: Abstraction has 24042 states and 45000 transitions. [2023-12-19 22:47:03,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-19 22:47:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand 24042 states and 45000 transitions. [2023-12-19 22:47:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 22:47:03,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:03,776 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-19 22:47:03,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 22:47:03,776 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:03,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash 256471350, now seen corresponding path program 1 times [2023-12-19 22:47:03,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:03,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949563763] [2023-12-19 22:47:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:03,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:03,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:47:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:47:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:47:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:47:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:47:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 22:47:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:04,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949563763] [2023-12-19 22:47:04,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949563763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:04,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:47:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:47:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310051875] [2023-12-19 22:47:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:04,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:47:04,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:47:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:47:04,103 INFO L87 Difference]: Start difference. First operand 24042 states and 45000 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:47:14,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:14,565 INFO L93 Difference]: Finished difference Result 51081 states and 99931 transitions. [2023-12-19 22:47:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:47:14,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-12-19 22:47:14,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:14,741 INFO L225 Difference]: With dead ends: 51081 [2023-12-19 22:47:14,741 INFO L226 Difference]: Without dead ends: 27051 [2023-12-19 22:47:14,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:47:14,839 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1380 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:14,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1312 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 22:47:14,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27051 states. [2023-12-19 22:47:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27051 to 24122. [2023-12-19 22:47:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24122 states, 16811 states have (on average 1.569745999643091) internal successors, (26389), 18192 states have internal predecessors, (26389), 6025 states have call successors, (6025), 990 states have call predecessors, (6025), 1285 states have return successors, (12650), 6038 states have call predecessors, (12650), 6007 states have call successors, (12650) [2023-12-19 22:47:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24122 states to 24122 states and 45064 transitions. [2023-12-19 22:47:20,550 INFO L78 Accepts]: Start accepts. Automaton has 24122 states and 45064 transitions. Word has length 87 [2023-12-19 22:47:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:20,550 INFO L495 AbstractCegarLoop]: Abstraction has 24122 states and 45064 transitions. [2023-12-19 22:47:20,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-19 22:47:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 24122 states and 45064 transitions. [2023-12-19 22:47:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 22:47:20,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:20,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-12-19 22:47:20,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 22:47:20,570 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:20,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1551520848, now seen corresponding path program 1 times [2023-12-19 22:47:20,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:20,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123926061] [2023-12-19 22:47:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:20,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:47:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:47:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:47:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:47:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:47:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:47:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:47:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 22:47:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123926061] [2023-12-19 22:47:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123926061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:47:21,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 22:47:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915051243] [2023-12-19 22:47:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:21,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:47:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:47:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 22:47:21,196 INFO L87 Difference]: Start difference. First operand 24122 states and 45064 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:47:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:47:41,650 INFO L93 Difference]: Finished difference Result 78729 states and 161890 transitions. [2023-12-19 22:47:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:47:41,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2023-12-19 22:47:41,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:47:42,047 INFO L225 Difference]: With dead ends: 78729 [2023-12-19 22:47:42,047 INFO L226 Difference]: Without dead ends: 54619 [2023-12-19 22:47:42,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:47:42,192 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 2280 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 4836 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 5511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 4836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:47:42,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2422 Valid, 2268 Invalid, 5511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 4836 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-19 22:47:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54619 states. [2023-12-19 22:47:52,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54619 to 48336. [2023-12-19 22:47:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48336 states, 33681 states have (on average 1.5668180873489503) internal successors, (52772), 36445 states have internal predecessors, (52772), 12067 states have call successors, (12067), 1974 states have call predecessors, (12067), 2587 states have return successors, (30637), 12119 states have call predecessors, (30637), 12033 states have call successors, (30637) [2023-12-19 22:47:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48336 states to 48336 states and 95476 transitions. [2023-12-19 22:47:53,660 INFO L78 Accepts]: Start accepts. Automaton has 48336 states and 95476 transitions. Word has length 97 [2023-12-19 22:47:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:47:53,662 INFO L495 AbstractCegarLoop]: Abstraction has 48336 states and 95476 transitions. [2023-12-19 22:47:53,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 22:47:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 48336 states and 95476 transitions. [2023-12-19 22:47:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 22:47:53,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:47:53,668 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2023-12-19 22:47:53,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 22:47:53,668 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:47:53,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:47:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1486363351, now seen corresponding path program 1 times [2023-12-19 22:47:53,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:47:53,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135911529] [2023-12-19 22:47:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:53,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:47:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:47:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:47:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:47:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:47:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:47:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-19 22:47:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:47:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:47:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:47:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:47:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:47:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:47:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:47:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 22:47:54,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:47:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135911529] [2023-12-19 22:47:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135911529] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:47:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592658097] [2023-12-19 22:47:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:47:54,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:47:54,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:47:54,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:47:54,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 22:47:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:47:54,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:47:54,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:47:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:47:54,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:47:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592658097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:47:54,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:47:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-19 22:47:54,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948019072] [2023-12-19 22:47:54,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:47:54,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 22:47:54,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:47:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 22:47:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-12-19 22:47:54,952 INFO L87 Difference]: Start difference. First operand 48336 states and 95476 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:48:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:48:19,504 INFO L93 Difference]: Finished difference Result 140202 states and 293431 transitions. [2023-12-19 22:48:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 22:48:19,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 122 [2023-12-19 22:48:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:48:20,645 INFO L225 Difference]: With dead ends: 140202 [2023-12-19 22:48:20,645 INFO L226 Difference]: Without dead ends: 91878 [2023-12-19 22:48:21,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2023-12-19 22:48:21,017 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 3212 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 6843 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 7592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 6843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:48:21,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 2161 Invalid, 7592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 6843 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 22:48:21,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91878 states. [2023-12-19 22:48:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91878 to 86189. [2023-12-19 22:48:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86189 states, 60953 states have (on average 1.5752957196528472) internal successors, (96019), 65555 states have internal predecessors, (96019), 20334 states have call successors, (20334), 3622 states have call predecessors, (20334), 4901 states have return successors, (55808), 20659 states have call predecessors, (55808), 20284 states have call successors, (55808) [2023-12-19 22:48:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86189 states to 86189 states and 172161 transitions. [2023-12-19 22:48:42,086 INFO L78 Accepts]: Start accepts. Automaton has 86189 states and 172161 transitions. Word has length 122 [2023-12-19 22:48:42,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:48:42,087 INFO L495 AbstractCegarLoop]: Abstraction has 86189 states and 172161 transitions. [2023-12-19 22:48:42,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-19 22:48:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 86189 states and 172161 transitions. [2023-12-19 22:48:42,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 22:48:42,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:48:42,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-12-19 22:48:42,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 22:48:42,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:48:42,429 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:48:42,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:48:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2086686351, now seen corresponding path program 1 times [2023-12-19 22:48:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:48:42,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754320841] [2023-12-19 22:48:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:48:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:48:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:48:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:48:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 22:48:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 22:48:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 22:48:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:48:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:48:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:48:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:48:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:48:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:48:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:48:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:48:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 22:48:42,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:48:42,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754320841] [2023-12-19 22:48:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754320841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:48:42,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:48:42,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 22:48:42,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384515279] [2023-12-19 22:48:42,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:48:42,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 22:48:42,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:48:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 22:48:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 22:48:42,827 INFO L87 Difference]: Start difference. First operand 86189 states and 172161 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-19 22:49:14,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:49:14,535 INFO L93 Difference]: Finished difference Result 186585 states and 414241 transitions. [2023-12-19 22:49:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 22:49:14,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-12-19 22:49:14,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:49:15,619 INFO L225 Difference]: With dead ends: 186585 [2023-12-19 22:49:15,620 INFO L226 Difference]: Without dead ends: 100360 [2023-12-19 22:49:16,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:49:16,321 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1371 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:49:16,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1354 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 22:49:16,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100360 states.