./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:19:54,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:19:54,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:19:54,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:19:54,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:19:54,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:19:54,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:19:54,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:19:54,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:19:54,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:19:54,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:19:54,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:19:54,669 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:19:54,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:19:54,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:19:54,672 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:19:54,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:19:54,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:19:54,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:19:54,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:19:54,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:19:54,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:19:54,676 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:19:54,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:19:54,677 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:19:54,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:19:54,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:19:54,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:19:54,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:54,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:19:54,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:19:54,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:19:54,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:19:54,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:19:54,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:19:54,684 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:19:54,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:19:54,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:19:54,685 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:19:54,685 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5a3f22f9d7a0aaa2c9864b464fdc1b701547a697c01ddf6ee0cf69e3554ef9 [2023-11-06 22:19:55,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:19:55,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:19:55,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:19:55,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:19:55,106 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:19:55,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2023-11-06 22:19:58,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:19:58,836 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:19:58,837 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c [2023-11-06 22:19:58,874 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/data/4709e70d5/36f6620b0a9e45b8ae9032ca173c6ed7/FLAG972df05b9 [2023-11-06 22:19:58,893 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/data/4709e70d5/36f6620b0a9e45b8ae9032ca173c6ed7 [2023-11-06 22:19:58,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:19:58,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:19:58,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:58,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:19:58,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:19:58,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:58,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b6bb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:58, skipping insertion in model container [2023-11-06 22:19:58,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:58" (1/1) ... [2023-11-06 22:19:59,045 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:19:59,281 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2023-11-06 22:19:59,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:59,820 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:19:59,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-06 22:19:59,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [62] [2023-11-06 22:19:59,836 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [71] [2023-11-06 22:19:59,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [235] [2023-11-06 22:19:59,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [903] [2023-11-06 22:19:59,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1263] [2023-11-06 22:19:59,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1355] [2023-11-06 22:19:59,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1390] [2023-11-06 22:19:59,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1756] [2023-11-06 22:19:59,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3289] [2023-11-06 22:19:59,843 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/sv-benchmarks/c/product-lines/elevator_spec9_product29.cil.c[1700,1713] [2023-11-06 22:20:00,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:20:00,067 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:20:00,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00 WrapperNode [2023-11-06 22:20:00,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:20:00,071 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:20:00,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:20:00,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:20:00,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,244 INFO L138 Inliner]: procedures = 93, calls = 338, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 863 [2023-11-06 22:20:00,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:20:00,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:20:00,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:20:00,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:20:00,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:20:00,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:20:00,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:20:00,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:20:00,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (1/1) ... [2023-11-06 22:20:00,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:20:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:00,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:20:00,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:20:00,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:20:00,483 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-06 22:20:00,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-06 22:20:00,484 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-06 22:20:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-06 22:20:00,484 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-06 22:20:00,484 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-06 22:20:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-06 22:20:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-06 22:20:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-06 22:20:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-06 22:20:00,485 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-06 22:20:00,485 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-06 22:20:00,486 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-06 22:20:00,486 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-06 22:20:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-06 22:20:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-06 22:20:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-06 22:20:00,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-06 22:20:00,487 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-06 22:20:00,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-06 22:20:00,489 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-06 22:20:00,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-06 22:20:00,489 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-06 22:20:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-06 22:20:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-06 22:20:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-06 22:20:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-06 22:20:00,491 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-06 22:20:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-06 22:20:00,491 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-06 22:20:00,491 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-06 22:20:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-06 22:20:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-06 22:20:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-06 22:20:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-06 22:20:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-06 22:20:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-11-06 22:20:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-11-06 22:20:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:20:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-06 22:20:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-06 22:20:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-06 22:20:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-06 22:20:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-06 22:20:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-06 22:20:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-06 22:20:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-06 22:20:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:20:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:20:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-06 22:20:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-06 22:20:00,721 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:20:00,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:20:02,421 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:20:02,444 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:20:02,444 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:20:02,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:02 BoogieIcfgContainer [2023-11-06 22:20:02,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:20:02,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:20:02,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:20:02,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:20:02,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:58" (1/3) ... [2023-11-06 22:20:02,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e10b7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:02, skipping insertion in model container [2023-11-06 22:20:02,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:20:00" (2/3) ... [2023-11-06 22:20:02,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e10b7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:20:02, skipping insertion in model container [2023-11-06 22:20:02,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:20:02" (3/3) ... [2023-11-06 22:20:02,464 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product29.cil.c [2023-11-06 22:20:02,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:20:02,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:20:02,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:20:02,597 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=LoopsAndPotentialCycles, 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;@4f8a7e54, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:20:02,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:20:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-06 22:20:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:20:02,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:02,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:02,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:02,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:02,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1610874664, now seen corresponding path program 1 times [2023-11-06 22:20:02,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:02,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41093843] [2023-11-06 22:20:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:02,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:20:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:20:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:20:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:20:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:20:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:20:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-06 22:20:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:20:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 22:20:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:04,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:04,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41093843] [2023-11-06 22:20:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41093843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:20:04,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648030106] [2023-11-06 22:20:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:04,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:20:04,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:05,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:20:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:20:05,044 INFO L87 Difference]: Start difference. First operand has 563 states, 445 states have (on average 1.698876404494382) internal successors, (756), 466 states have internal predecessors, (756), 92 states have call successors, (92), 24 states have call predecessors, (92), 24 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:20:18,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:18,411 INFO L93 Difference]: Finished difference Result 1531 states and 2639 transitions. [2023-11-06 22:20:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:20:18,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2023-11-06 22:20:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:18,446 INFO L225 Difference]: With dead ends: 1531 [2023-11-06 22:20:18,446 INFO L226 Difference]: Without dead ends: 980 [2023-11-06 22:20:18,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:20:18,466 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1494 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 5505 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 6016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 5505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:18,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 3116 Invalid, 6016 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [511 Valid, 5505 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-11-06 22:20:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-11-06 22:20:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 558. [2023-11-06 22:20:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 442 states have (on average 1.6900452488687783) internal successors, (747), 461 states have internal predecessors, (747), 92 states have call successors, (92), 24 states have call predecessors, (92), 23 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-06 22:20:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 926 transitions. [2023-11-06 22:20:18,836 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 926 transitions. Word has length 90 [2023-11-06 22:20:18,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:18,837 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 926 transitions. [2023-11-06 22:20:18,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:20:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 926 transitions. [2023-11-06 22:20:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 22:20:18,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:18,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:18,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:20:18,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:18,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:18,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1078497272, now seen corresponding path program 1 times [2023-11-06 22:20:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:18,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071053427] [2023-11-06 22:20:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:20:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:20:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:19,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 22:20:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:20:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:20:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:20:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:20:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:20:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:20:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:20:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:20,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:20,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071053427] [2023-11-06 22:20:20,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071053427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:20,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:20,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 22:20:20,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740617707] [2023-11-06 22:20:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:20,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:20:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:20:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:20:20,384 INFO L87 Difference]: Start difference. First operand 558 states and 926 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:20:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:33,788 INFO L93 Difference]: Finished difference Result 1369 states and 2312 transitions. [2023-11-06 22:20:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:20:33,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2023-11-06 22:20:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:33,805 INFO L225 Difference]: With dead ends: 1369 [2023-11-06 22:20:33,805 INFO L226 Difference]: Without dead ends: 829 [2023-11-06 22:20:33,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:20:33,812 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1048 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 7816 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 4556 SdHoareTripleChecker+Invalid, 8059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 7816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:33,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 4556 Invalid, 8059 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [243 Valid, 7816 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-06 22:20:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-06 22:20:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 565. [2023-11-06 22:20:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 447 states have (on average 1.680089485458613) internal successors, (751), 466 states have internal predecessors, (751), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2023-11-06 22:20:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 935 transitions. [2023-11-06 22:20:34,015 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 935 transitions. Word has length 96 [2023-11-06 22:20:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:34,016 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 935 transitions. [2023-11-06 22:20:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:20:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 935 transitions. [2023-11-06 22:20:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-06 22:20:34,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:34,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:34,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:20:34,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:34,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:34,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1811433455, now seen corresponding path program 1 times [2023-11-06 22:20:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890680032] [2023-11-06 22:20:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:20:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:20:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-06 22:20:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:20:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:20:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:20:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:20:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:20:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:20:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 22:20:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:34,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890680032] [2023-11-06 22:20:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890680032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:34,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:34,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:20:34,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931589669] [2023-11-06 22:20:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:34,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:34,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:34,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:34,878 INFO L87 Difference]: Start difference. First operand 565 states and 935 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:20:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:41,869 INFO L93 Difference]: Finished difference Result 1355 states and 2274 transitions. [2023-11-06 22:20:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-11-06 22:20:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:41,879 INFO L225 Difference]: With dead ends: 1355 [2023-11-06 22:20:41,879 INFO L226 Difference]: Without dead ends: 808 [2023-11-06 22:20:41,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:20:41,884 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1896 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:41,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 1606 Invalid, 3218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [478 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 22:20:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-11-06 22:20:42,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 565. [2023-11-06 22:20:42,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 447 states have (on average 1.6778523489932886) internal successors, (750), 466 states have internal predecessors, (750), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2023-11-06 22:20:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 934 transitions. [2023-11-06 22:20:42,089 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 934 transitions. Word has length 98 [2023-11-06 22:20:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:42,089 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 934 transitions. [2023-11-06 22:20:42,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:20:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 934 transitions. [2023-11-06 22:20:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 22:20:42,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:42,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:42,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:20:42,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:42,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1526586216, now seen corresponding path program 1 times [2023-11-06 22:20:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:42,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556526691] [2023-11-06 22:20:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:42,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:20:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:20:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:20:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:20:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:20:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:20:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:20:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:20:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:20:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 22:20:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:42,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:42,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556526691] [2023-11-06 22:20:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556526691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:42,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:42,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:20:42,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918997038] [2023-11-06 22:20:42,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:42,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:42,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:42,965 INFO L87 Difference]: Start difference. First operand 565 states and 934 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:20:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:50,215 INFO L93 Difference]: Finished difference Result 1355 states and 2273 transitions. [2023-11-06 22:20:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2023-11-06 22:20:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:50,224 INFO L225 Difference]: With dead ends: 1355 [2023-11-06 22:20:50,225 INFO L226 Difference]: Without dead ends: 808 [2023-11-06 22:20:50,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:20:50,230 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 976 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:50,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1709 Invalid, 3165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [202 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-06 22:20:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-11-06 22:20:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 565. [2023-11-06 22:20:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 447 states have (on average 1.6756152125279642) internal successors, (749), 466 states have internal predecessors, (749), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2023-11-06 22:20:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 933 transitions. [2023-11-06 22:20:50,453 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 933 transitions. Word has length 99 [2023-11-06 22:20:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:50,454 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 933 transitions. [2023-11-06 22:20:50,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:20:50,454 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 933 transitions. [2023-11-06 22:20:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-06 22:20:50,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:50,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:50,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:20:50,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:50,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:50,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1389275509, now seen corresponding path program 1 times [2023-11-06 22:20:50,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:50,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153172960] [2023-11-06 22:20:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:50,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:20:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-06 22:20:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-06 22:20:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:20:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:20:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:20:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:20:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:20:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:20:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 22:20:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:51,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:51,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153172960] [2023-11-06 22:20:51,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153172960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:51,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:51,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:20:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648139068] [2023-11-06 22:20:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:51,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:51,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:51,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:51,272 INFO L87 Difference]: Start difference. First operand 565 states and 933 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:20:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:58,299 INFO L93 Difference]: Finished difference Result 1355 states and 2272 transitions. [2023-11-06 22:20:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:20:58,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2023-11-06 22:20:58,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:58,309 INFO L225 Difference]: With dead ends: 1355 [2023-11-06 22:20:58,309 INFO L226 Difference]: Without dead ends: 808 [2023-11-06 22:20:58,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:20:58,315 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1438 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:58,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1642 Invalid, 3131 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [345 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-06 22:20:58,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-11-06 22:20:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 565. [2023-11-06 22:20:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 447 states have (on average 1.6733780760626398) internal successors, (748), 466 states have internal predecessors, (748), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 87 states have call predecessors, (92), 87 states have call successors, (92) [2023-11-06 22:20:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 932 transitions. [2023-11-06 22:20:58,542 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 932 transitions. Word has length 100 [2023-11-06 22:20:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:58,544 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 932 transitions. [2023-11-06 22:20:58,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:20:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 932 transitions. [2023-11-06 22:20:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-06 22:20:58,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:58,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:58,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:20:58,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:58,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:58,551 INFO L85 PathProgramCache]: Analyzing trace with hash -890905484, now seen corresponding path program 1 times [2023-11-06 22:20:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:58,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271199584] [2023-11-06 22:20:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:58,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:20:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:20:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:20:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:20:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:20:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:20:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:20:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:20:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:20:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:20:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 22:20:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:20:59,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:59,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271199584] [2023-11-06 22:20:59,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271199584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:59,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:59,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:20:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877893804] [2023-11-06 22:20:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:59,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:20:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:59,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:20:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:20:59,793 INFO L87 Difference]: Start difference. First operand 565 states and 932 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:10,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:10,484 INFO L93 Difference]: Finished difference Result 1343 states and 2253 transitions. [2023-11-06 22:21:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:21:10,485 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2023-11-06 22:21:10,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:10,492 INFO L225 Difference]: With dead ends: 1343 [2023-11-06 22:21:10,493 INFO L226 Difference]: Without dead ends: 836 [2023-11-06 22:21:10,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:21:10,497 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 2033 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 6726 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 7238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 6726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:10,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 3995 Invalid, 7238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [512 Valid, 6726 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-06 22:21:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-11-06 22:21:10,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 566. [2023-11-06 22:21:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 448 states have (on average 1.6607142857142858) internal successors, (744), 466 states have internal predecessors, (744), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 88 states have call predecessors, (92), 87 states have call successors, (92) [2023-11-06 22:21:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 928 transitions. [2023-11-06 22:21:10,722 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 928 transitions. Word has length 101 [2023-11-06 22:21:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:10,723 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 928 transitions. [2023-11-06 22:21:10,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 928 transitions. [2023-11-06 22:21:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-06 22:21:10,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:10,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:10,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:21:10,730 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:10,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:10,730 INFO L85 PathProgramCache]: Analyzing trace with hash 251640511, now seen corresponding path program 1 times [2023-11-06 22:21:10,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:10,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275779638] [2023-11-06 22:21:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:10,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:21:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:21:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:21:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:21:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:21:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:21:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:21:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:21:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:21:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 22:21:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:21:11,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:11,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275779638] [2023-11-06 22:21:11,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275779638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:11,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:11,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:21:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361668496] [2023-11-06 22:21:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:11,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:21:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:21:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:21:11,926 INFO L87 Difference]: Start difference. First operand 566 states and 928 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:20,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:20,295 INFO L93 Difference]: Finished difference Result 1334 states and 2238 transitions. [2023-11-06 22:21:20,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:21:20,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2023-11-06 22:21:20,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:20,304 INFO L225 Difference]: With dead ends: 1334 [2023-11-06 22:21:20,304 INFO L226 Difference]: Without dead ends: 826 [2023-11-06 22:21:20,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:21:20,309 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1561 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 4247 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 4625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 4247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:20,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 2501 Invalid, 4625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [378 Valid, 4247 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-06 22:21:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-11-06 22:21:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 569. [2023-11-06 22:21:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 451 states have (on average 1.647450110864745) internal successors, (743), 469 states have internal predecessors, (743), 92 states have call successors, (92), 24 states have call predecessors, (92), 25 states have return successors, (92), 88 states have call predecessors, (92), 87 states have call successors, (92) [2023-11-06 22:21:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 927 transitions. [2023-11-06 22:21:20,554 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 927 transitions. Word has length 102 [2023-11-06 22:21:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:20,554 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 927 transitions. [2023-11-06 22:21:20,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 927 transitions. [2023-11-06 22:21:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-06 22:21:20,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:20,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:20,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:21:20,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:20,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1057939171, now seen corresponding path program 1 times [2023-11-06 22:21:20,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:20,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775361682] [2023-11-06 22:21:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:20,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:21:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:20,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:21:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:21:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:21:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:21:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:21:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:21:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:21:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 22:21:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:21:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:21:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:21,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775361682] [2023-11-06 22:21:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775361682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:21:21,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133761990] [2023-11-06 22:21:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:21,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:21,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:21,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:21:21,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:21:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:22,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:21:22,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:22,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133761990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:22,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:21:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 14 [2023-11-06 22:21:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575407086] [2023-11-06 22:21:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:22,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:21:22,116 INFO L87 Difference]: Start difference. First operand 569 states and 927 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:22,742 INFO L93 Difference]: Finished difference Result 1521 states and 2538 transitions. [2023-11-06 22:21:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:22,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-11-06 22:21:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:22,760 INFO L225 Difference]: With dead ends: 1521 [2023-11-06 22:21:22,760 INFO L226 Difference]: Without dead ends: 1024 [2023-11-06 22:21:22,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:21:22,766 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 840 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:22,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1696 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:21:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2023-11-06 22:21:23,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1009. [2023-11-06 22:21:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 795 states have (on average 1.6327044025157234) internal successors, (1298), 826 states have internal predecessors, (1298), 167 states have call successors, (167), 43 states have call predecessors, (167), 46 states have return successors, (191), 165 states have call predecessors, (191), 162 states have call successors, (191) [2023-11-06 22:21:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1656 transitions. [2023-11-06 22:21:23,232 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1656 transitions. Word has length 106 [2023-11-06 22:21:23,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:23,234 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1656 transitions. [2023-11-06 22:21:23,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1656 transitions. [2023-11-06 22:21:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-06 22:21:23,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:23,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:23,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:23,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:21:23,457 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:23,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:23,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1105547155, now seen corresponding path program 1 times [2023-11-06 22:21:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:23,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766076404] [2023-11-06 22:21:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:23,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:23,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:21:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:21:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:21:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:21:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:21:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:21:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:21:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:21:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:21:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:21:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:21:24,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766076404] [2023-11-06 22:21:24,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766076404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:24,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:21:24,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585456755] [2023-11-06 22:21:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:24,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:21:24,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:24,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:21:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:21:24,450 INFO L87 Difference]: Start difference. First operand 1009 states and 1656 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:31,634 INFO L93 Difference]: Finished difference Result 2363 states and 3960 transitions. [2023-11-06 22:21:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:21:31,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-11-06 22:21:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:31,649 INFO L225 Difference]: With dead ends: 2363 [2023-11-06 22:21:31,649 INFO L226 Difference]: Without dead ends: 1412 [2023-11-06 22:21:31,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:21:31,655 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1973 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:31,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 1597 Invalid, 3102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [491 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-06 22:21:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2023-11-06 22:21:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1051. [2023-11-06 22:21:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 831 states have (on average 1.628158844765343) internal successors, (1353), 862 states have internal predecessors, (1353), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-11-06 22:21:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1722 transitions. [2023-11-06 22:21:32,115 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1722 transitions. Word has length 107 [2023-11-06 22:21:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:32,115 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1722 transitions. [2023-11-06 22:21:32,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1722 transitions. [2023-11-06 22:21:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:21:32,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:32,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:32,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:21:32,122 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:32,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash 304333944, now seen corresponding path program 1 times [2023-11-06 22:21:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536476419] [2023-11-06 22:21:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:21:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:21:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:21:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:21:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:21:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:21:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:21:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:21:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:21:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:21:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:21:32,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:32,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536476419] [2023-11-06 22:21:32,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536476419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:32,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:32,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:21:32,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236524155] [2023-11-06 22:21:32,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:32,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:21:32,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:32,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:21:32,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:21:32,995 INFO L87 Difference]: Start difference. First operand 1051 states and 1722 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:40,061 INFO L93 Difference]: Finished difference Result 2405 states and 4026 transitions. [2023-11-06 22:21:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:21:40,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-11-06 22:21:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:40,075 INFO L225 Difference]: With dead ends: 2405 [2023-11-06 22:21:40,075 INFO L226 Difference]: Without dead ends: 1412 [2023-11-06 22:21:40,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:21:40,081 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1980 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 2587 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:40,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2052 Valid, 1603 Invalid, 3073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [486 Valid, 2587 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 22:21:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2023-11-06 22:21:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1051. [2023-11-06 22:21:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 831 states have (on average 1.6221419975932612) internal successors, (1348), 862 states have internal predecessors, (1348), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-11-06 22:21:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1717 transitions. [2023-11-06 22:21:40,566 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1717 transitions. Word has length 108 [2023-11-06 22:21:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:40,567 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1717 transitions. [2023-11-06 22:21:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1717 transitions. [2023-11-06 22:21:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:21:40,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:40,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:40,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:21:40,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:40,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1427762777, now seen corresponding path program 1 times [2023-11-06 22:21:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429041681] [2023-11-06 22:21:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:40,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:21:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:21:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:21:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:21:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:21:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:21:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:21:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:21:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:21:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:21:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:21:41,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:41,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429041681] [2023-11-06 22:21:41,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429041681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:41,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:41,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:21:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381847674] [2023-11-06 22:21:41,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:41,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:21:41,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:21:41,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:21:41,409 INFO L87 Difference]: Start difference. First operand 1051 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:48,844 INFO L93 Difference]: Finished difference Result 2418 states and 4039 transitions. [2023-11-06 22:21:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:21:48,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-11-06 22:21:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:48,855 INFO L225 Difference]: With dead ends: 2418 [2023-11-06 22:21:48,856 INFO L226 Difference]: Without dead ends: 1431 [2023-11-06 22:21:48,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:21:48,862 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1949 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:48,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2021 Valid, 1614 Invalid, 3093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [477 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-06 22:21:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-11-06 22:21:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1053. [2023-11-06 22:21:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 833 states have (on average 1.6206482593037215) internal successors, (1350), 864 states have internal predecessors, (1350), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-11-06 22:21:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1719 transitions. [2023-11-06 22:21:49,251 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1719 transitions. Word has length 108 [2023-11-06 22:21:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:49,251 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1719 transitions. [2023-11-06 22:21:49,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1719 transitions. [2023-11-06 22:21:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 22:21:49,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:49,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:49,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:21:49,257 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:49,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1583620142, now seen corresponding path program 1 times [2023-11-06 22:21:49,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:49,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313812046] [2023-11-06 22:21:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:49,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:49,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:21:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:49,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:21:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:49,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:21:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:21:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:21:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:21:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:21:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:21:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:21:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:21:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:21:50,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:50,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313812046] [2023-11-06 22:21:50,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313812046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:50,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:50,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:21:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493706403] [2023-11-06 22:21:50,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:50,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:21:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:50,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:21:50,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:21:50,096 INFO L87 Difference]: Start difference. First operand 1053 states and 1719 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:56,739 INFO L93 Difference]: Finished difference Result 2411 states and 4027 transitions. [2023-11-06 22:21:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:21:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-11-06 22:21:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:56,751 INFO L225 Difference]: With dead ends: 2411 [2023-11-06 22:21:56,751 INFO L226 Difference]: Without dead ends: 1416 [2023-11-06 22:21:56,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:21:56,757 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1973 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:56,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 1592 Invalid, 3056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [493 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-06 22:21:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-11-06 22:21:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1053. [2023-11-06 22:21:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 833 states have (on average 1.6146458583433374) internal successors, (1345), 864 states have internal predecessors, (1345), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-11-06 22:21:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1714 transitions. [2023-11-06 22:21:57,239 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1714 transitions. Word has length 109 [2023-11-06 22:21:57,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:57,240 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1714 transitions. [2023-11-06 22:21:57,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:21:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1714 transitions. [2023-11-06 22:21:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 22:21:57,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:57,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:57,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:21:57,245 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:57,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1551503601, now seen corresponding path program 1 times [2023-11-06 22:21:57,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:57,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733383212] [2023-11-06 22:21:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:57,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:21:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:21:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:21:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:21:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:21:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:21:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:21:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:21:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:21:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:21:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:21:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:21:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733383212] [2023-11-06 22:21:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733383212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:58,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:58,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:21:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830665766] [2023-11-06 22:21:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:58,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:21:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:21:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:21:58,098 INFO L87 Difference]: Start difference. First operand 1053 states and 1714 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:22:05,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:22:05,663 INFO L93 Difference]: Finished difference Result 2422 states and 4036 transitions. [2023-11-06 22:22:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:22:05,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-11-06 22:22:05,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:22:05,672 INFO L225 Difference]: With dead ends: 2422 [2023-11-06 22:22:05,672 INFO L226 Difference]: Without dead ends: 1435 [2023-11-06 22:22:05,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:22:05,677 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1952 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:22:05,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 1614 Invalid, 3066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [478 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-06 22:22:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2023-11-06 22:22:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1056. [2023-11-06 22:22:06,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 836 states have (on average 1.61244019138756) internal successors, (1348), 867 states have internal predecessors, (1348), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-11-06 22:22:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1717 transitions. [2023-11-06 22:22:06,178 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1717 transitions. Word has length 109 [2023-11-06 22:22:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:22:06,179 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1717 transitions. [2023-11-06 22:22:06,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:22:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1717 transitions. [2023-11-06 22:22:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 22:22:06,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:22:06,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:06,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:22:06,184 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:22:06,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:06,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1669717437, now seen corresponding path program 1 times [2023-11-06 22:22:06,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:06,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290187822] [2023-11-06 22:22:06,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:06,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:06,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:22:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:22:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:22:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:22:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:22:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:22:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:22:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:22:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:22:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:22:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:07,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:07,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290187822] [2023-11-06 22:22:07,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290187822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:07,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:07,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:22:07,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319966269] [2023-11-06 22:22:07,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:07,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:22:07,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:07,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:22:07,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:22:07,177 INFO L87 Difference]: Start difference. First operand 1056 states and 1717 transitions. Second operand has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:22:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:22:17,736 INFO L93 Difference]: Finished difference Result 2428 states and 4044 transitions. [2023-11-06 22:22:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:22:17,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2023-11-06 22:22:17,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:22:17,751 INFO L225 Difference]: With dead ends: 2428 [2023-11-06 22:22:17,751 INFO L226 Difference]: Without dead ends: 1444 [2023-11-06 22:22:17,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:22:17,758 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1046 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 5168 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3010 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 5168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:22:17,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 3010 Invalid, 5372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [204 Valid, 5168 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-06 22:22:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2023-11-06 22:22:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1067. [2023-11-06 22:22:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 844 states have (on average 1.6101895734597156) internal successors, (1359), 877 states have internal predecessors, (1359), 172 states have call successors, (172), 43 states have call predecessors, (172), 50 states have return successors, (201), 170 states have call predecessors, (201), 167 states have call successors, (201) [2023-11-06 22:22:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1732 transitions. [2023-11-06 22:22:18,208 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1732 transitions. Word has length 110 [2023-11-06 22:22:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:22:18,209 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1732 transitions. [2023-11-06 22:22:18,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.222222222222221) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:22:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1732 transitions. [2023-11-06 22:22:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 22:22:18,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:22:18,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:18,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:22:18,214 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:22:18,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1181118558, now seen corresponding path program 1 times [2023-11-06 22:22:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:18,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853720301] [2023-11-06 22:22:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:22:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:22:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:22:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:22:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:22:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:18,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:22:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:19,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:22:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:22:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:22:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:22:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:19,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:19,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853720301] [2023-11-06 22:22:19,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853720301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:19,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:19,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:22:19,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763183288] [2023-11-06 22:22:19,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:19,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:22:19,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:22:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:22:19,038 INFO L87 Difference]: Start difference. First operand 1067 states and 1732 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:22:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:22:26,835 INFO L93 Difference]: Finished difference Result 2449 states and 4072 transitions. [2023-11-06 22:22:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:22:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-11-06 22:22:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:22:26,850 INFO L225 Difference]: With dead ends: 2449 [2023-11-06 22:22:26,850 INFO L226 Difference]: Without dead ends: 1459 [2023-11-06 22:22:26,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:22:26,858 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1957 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 3063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:22:26,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 1592 Invalid, 3063 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [498 Valid, 2565 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-06 22:22:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2023-11-06 22:22:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1071. [2023-11-06 22:22:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 848 states have (on average 1.6061320754716981) internal successors, (1362), 881 states have internal predecessors, (1362), 172 states have call successors, (172), 43 states have call predecessors, (172), 50 states have return successors, (201), 170 states have call predecessors, (201), 167 states have call successors, (201) [2023-11-06 22:22:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1735 transitions. [2023-11-06 22:22:27,361 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1735 transitions. Word has length 110 [2023-11-06 22:22:27,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:22:27,361 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1735 transitions. [2023-11-06 22:22:27,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:22:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1735 transitions. [2023-11-06 22:22:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 22:22:27,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:22:27,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:22:27,367 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:22:27,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1227962942, now seen corresponding path program 1 times [2023-11-06 22:22:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611356240] [2023-11-06 22:22:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:27,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:22:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:22:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:22:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:22:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:22:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:22:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:22:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:22:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:22:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:22:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:28,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:28,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611356240] [2023-11-06 22:22:28,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611356240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:28,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:28,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:22:28,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148039807] [2023-11-06 22:22:28,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:28,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:22:28,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:28,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:22:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:22:28,184 INFO L87 Difference]: Start difference. First operand 1071 states and 1735 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:22:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:22:35,809 INFO L93 Difference]: Finished difference Result 2493 states and 4118 transitions. [2023-11-06 22:22:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:22:35,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-11-06 22:22:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:22:35,819 INFO L225 Difference]: With dead ends: 2493 [2023-11-06 22:22:35,820 INFO L226 Difference]: Without dead ends: 1420 [2023-11-06 22:22:35,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:22:35,826 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1396 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:22:35,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1680 Invalid, 3086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [333 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-06 22:22:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2023-11-06 22:22:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1052. [2023-11-06 22:22:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 832 states have (on average 1.6105769230769231) internal successors, (1340), 863 states have internal predecessors, (1340), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-11-06 22:22:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1709 transitions. [2023-11-06 22:22:36,308 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1709 transitions. Word has length 110 [2023-11-06 22:22:36,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:22:36,309 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1709 transitions. [2023-11-06 22:22:36,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:22:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1709 transitions. [2023-11-06 22:22:36,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:22:36,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:22:36,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:36,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:22:36,313 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:22:36,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash 593658932, now seen corresponding path program 1 times [2023-11-06 22:22:36,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:36,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294103233] [2023-11-06 22:22:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:36,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:22:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:22:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:22:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:22:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:22:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:22:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:22:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:22:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:22:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:22:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:37,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294103233] [2023-11-06 22:22:37,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294103233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:37,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:37,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:22:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615177824] [2023-11-06 22:22:37,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:37,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:22:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:37,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:22:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:22:37,079 INFO L87 Difference]: Start difference. First operand 1052 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:22:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:22:44,288 INFO L93 Difference]: Finished difference Result 2426 states and 4031 transitions. [2023-11-06 22:22:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:22:44,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-11-06 22:22:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:22:44,297 INFO L225 Difference]: With dead ends: 2426 [2023-11-06 22:22:44,297 INFO L226 Difference]: Without dead ends: 1439 [2023-11-06 22:22:44,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:22:44,302 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1915 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:22:44,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 1586 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:22:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-11-06 22:22:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1057. [2023-11-06 22:22:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 837 states have (on average 1.6069295101553167) internal successors, (1345), 868 states have internal predecessors, (1345), 171 states have call successors, (171), 43 states have call predecessors, (171), 48 states have return successors, (198), 169 states have call predecessors, (198), 166 states have call successors, (198) [2023-11-06 22:22:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1714 transitions. [2023-11-06 22:22:44,857 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1714 transitions. Word has length 111 [2023-11-06 22:22:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:22:44,857 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1714 transitions. [2023-11-06 22:22:44,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-06 22:22:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1714 transitions. [2023-11-06 22:22:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 22:22:44,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:22:44,861 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:44,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:22:44,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:22:44,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash -328963981, now seen corresponding path program 1 times [2023-11-06 22:22:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:44,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987898813] [2023-11-06 22:22:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:44,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:22:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:22:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:22:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:22:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:22:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:22:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:22:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 22:22:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-06 22:22:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:22:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-06 22:22:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:45,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:45,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987898813] [2023-11-06 22:22:45,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987898813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:45,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:45,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:22:45,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049287911] [2023-11-06 22:22:45,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:45,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:22:45,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:45,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:22:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:22:45,903 INFO L87 Difference]: Start difference. First operand 1057 states and 1714 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:23:03,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:23:03,097 INFO L93 Difference]: Finished difference Result 3660 states and 6229 transitions. [2023-11-06 22:23:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:23:03,098 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2023-11-06 22:23:03,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:23:03,114 INFO L225 Difference]: With dead ends: 3660 [2023-11-06 22:23:03,114 INFO L226 Difference]: Without dead ends: 2681 [2023-11-06 22:23:03,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:23:03,121 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 3494 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 5758 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 6796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 5758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:23:03,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3564 Valid, 3437 Invalid, 6796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1038 Valid, 5758 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-11-06 22:23:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2023-11-06 22:23:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 1980. [2023-11-06 22:23:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1567 states have (on average 1.6253988513082323) internal successors, (2547), 1618 states have internal predecessors, (2547), 322 states have call successors, (322), 79 states have call predecessors, (322), 90 states have return successors, (375), 330 states have call predecessors, (375), 317 states have call successors, (375) [2023-11-06 22:23:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 3244 transitions. [2023-11-06 22:23:04,064 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 3244 transitions. Word has length 112 [2023-11-06 22:23:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:23:04,065 INFO L495 AbstractCegarLoop]: Abstraction has 1980 states and 3244 transitions. [2023-11-06 22:23:04,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:23:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 3244 transitions. [2023-11-06 22:23:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 22:23:04,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:23:04,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:23:04,069 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:23:04,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2008351818, now seen corresponding path program 1 times [2023-11-06 22:23:04,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:04,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265767188] [2023-11-06 22:23:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:04,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:23:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:23:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:23:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:23:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:23:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:23:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:23:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:23:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:23:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:23:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:23:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:23:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:23:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:23:05,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:05,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265767188] [2023-11-06 22:23:05,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265767188] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:05,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807624381] [2023-11-06 22:23:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:05,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:05,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:05,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:05,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:23:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:05,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:23:05,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:05,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:05,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807624381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:05,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:23:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2023-11-06 22:23:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096041023] [2023-11-06 22:23:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:05,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:23:05,371 INFO L87 Difference]: Start difference. First operand 1980 states and 3244 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 22:23:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:23:06,623 INFO L93 Difference]: Finished difference Result 4255 states and 7106 transitions. [2023-11-06 22:23:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-11-06 22:23:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:23:06,640 INFO L225 Difference]: With dead ends: 4255 [2023-11-06 22:23:06,641 INFO L226 Difference]: Without dead ends: 2683 [2023-11-06 22:23:06,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:23:06,651 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 876 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:23:06,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1509 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:23:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2023-11-06 22:23:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2668. [2023-11-06 22:23:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2110 states have (on average 1.6066350710900474) internal successors, (3390), 2172 states have internal predecessors, (3390), 428 states have call successors, (428), 114 states have call predecessors, (428), 129 states have return successors, (580), 441 states have call predecessors, (580), 423 states have call successors, (580) [2023-11-06 22:23:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4398 transitions. [2023-11-06 22:23:07,808 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4398 transitions. Word has length 116 [2023-11-06 22:23:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:23:07,808 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4398 transitions. [2023-11-06 22:23:07,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 22:23:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4398 transitions. [2023-11-06 22:23:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:23:07,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:23:07,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:07,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:08,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be09647c-9df5-4d30-bc79-bf6b282d7e5e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:08,012 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:23:08,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:08,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1138173595, now seen corresponding path program 1 times [2023-11-06 22:23:08,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:08,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511087282] [2023-11-06 22:23:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:08,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:23:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:23:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:23:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 22:23:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:23:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:23:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:23:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:23:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:23:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:23:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-06 22:23:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:23:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 22:23:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:23:08,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:08,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511087282] [2023-11-06 22:23:08,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511087282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:08,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:08,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 22:23:08,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679536909] [2023-11-06 22:23:08,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:08,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:23:08,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:08,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:23:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:23:08,980 INFO L87 Difference]: Start difference. First operand 2668 states and 4398 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13)