./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:09:02,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:09:02,566 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:09:02,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:09:02,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:09:02,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:09:02,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:09:02,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:09:02,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:09:02,600 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:09:02,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:09:02,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:09:02,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:09:02,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:09:02,603 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:09:02,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:09:02,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:09:02,605 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:09:02,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:09:02,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:09:02,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:09:02,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:09:02,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:09:02,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:09:02,610 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:09:02,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:09:02,623 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:09:02,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:09:02,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:09:02,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:09:02,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:09:02,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:09:02,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:09:02,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:09:02,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:09:02,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:09:02,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:09:02,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:09:02,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:09:02,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:09:02,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:09:02,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:09:02,628 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_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2023-11-29 07:09:02,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:09:02,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:09:02,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:09:02,864 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:09:02,865 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:09:02,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2023-11-29 07:09:05,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:09:05,839 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:09:05,840 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2023-11-29 07:09:05,862 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/data/b18bd0fe9/db47b5f2611a4f62b38f9ef671d4baec/FLAGb169cf770 [2023-11-29 07:09:05,874 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/data/b18bd0fe9/db47b5f2611a4f62b38f9ef671d4baec [2023-11-29 07:09:05,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:09:05,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:09:05,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:09:05,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:09:05,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:09:05,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:09:05" (1/1) ... [2023-11-29 07:09:05,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28815057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:05, skipping insertion in model container [2023-11-29 07:09:05,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:09:05" (1/1) ... [2023-11-29 07:09:05,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:09:06,174 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_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2023-11-29 07:09:06,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:09:06,360 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:09:06,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2023-11-29 07:09:06,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [147] [2023-11-29 07:09:06,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [165] [2023-11-29 07:09:06,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [832] [2023-11-29 07:09:06,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [952] [2023-11-29 07:09:06,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [961] [2023-11-29 07:09:06,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2023-11-29 07:09:06,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2442] [2023-11-29 07:09:06,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2790] [2023-11-29 07:09:06,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2976] [2023-11-29 07:09:06,398 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_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2023-11-29 07:09:06,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:09:06,534 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:09:06,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06 WrapperNode [2023-11-29 07:09:06,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:09:06,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:09:06,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:09:06,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:09:06,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,614 INFO L138 Inliner]: procedures = 87, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 807 [2023-11-29 07:09:06,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:09:06,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:09:06,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:09:06,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:09:06,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,661 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-11-29 07:09:06,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:09:06,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:09:06,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:09:06,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:09:06,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (1/1) ... [2023-11-29 07:09:06,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:09:06,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:06,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:09:06,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:09:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:09:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-29 07:09:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-29 07:09:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-29 07:09:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-29 07:09:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-29 07:09:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-29 07:09:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-29 07:09:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-29 07:09:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-29 07:09:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-29 07:09:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 07:09:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 07:09:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 07:09:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 07:09:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 07:09:06,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 07:09:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-29 07:09:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-29 07:09:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-29 07:09:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-29 07:09:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-29 07:09:06,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-29 07:09:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-29 07:09:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-29 07:09:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-29 07:09:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-29 07:09:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-29 07:09:06,803 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-29 07:09:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-29 07:09:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-29 07:09:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-29 07:09:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-29 07:09:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-29 07:09:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-29 07:09:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-29 07:09:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-29 07:09:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:09:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 07:09:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 07:09:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 07:09:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 07:09:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 07:09:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 07:09:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 07:09:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 07:09:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 07:09:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 07:09:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 07:09:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-29 07:09:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-29 07:09:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-29 07:09:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-29 07:09:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-29 07:09:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-29 07:09:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-29 07:09:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-29 07:09:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-29 07:09:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-29 07:09:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-29 07:09:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-29 07:09:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-29 07:09:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-29 07:09:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-29 07:09:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-29 07:09:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:09:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:09:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-29 07:09:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-29 07:09:06,981 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:09:06,983 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:09:07,913 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:09:07,992 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:09:07,992 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:09:07,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:09:07 BoogieIcfgContainer [2023-11-29 07:09:07,993 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:09:07,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:09:07,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:09:07,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:09:07,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:09:05" (1/3) ... [2023-11-29 07:09:08,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf52793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:09:07, skipping insertion in model container [2023-11-29 07:09:08,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:06" (2/3) ... [2023-11-29 07:09:08,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf52793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:09:08, skipping insertion in model container [2023-11-29 07:09:08,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:09:07" (3/3) ... [2023-11-29 07:09:08,001 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2023-11-29 07:09:08,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:09:08,020 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:09:08,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:09:08,089 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33351e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:09:08,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:09:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 536 states, 413 states have (on average 1.7263922518159807) internal successors, (713), 431 states have internal predecessors, (713), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2023-11-29 07:09:08,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 07:09:08,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:08,122 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:08,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:08,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1944334352, now seen corresponding path program 1 times [2023-11-29 07:09:08,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:08,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649585647] [2023-11-29 07:09:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:08,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:09:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:09:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 07:09:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 07:09:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 07:09:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 07:09:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 07:09:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:09:09,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:09,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649585647] [2023-11-29 07:09:09,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649585647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:09,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:09,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:09:09,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282919401] [2023-11-29 07:09:09,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:09,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:09:09,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:09,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:09:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:09:09,553 INFO L87 Difference]: Start difference. First operand has 536 states, 413 states have (on average 1.7263922518159807) internal successors, (713), 431 states have internal predecessors, (713), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:17,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:17,868 INFO L93 Difference]: Finished difference Result 1415 states and 2503 transitions. [2023-11-29 07:09:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:09:17,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 75 [2023-11-29 07:09:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:17,895 INFO L225 Difference]: With dead ends: 1415 [2023-11-29 07:09:17,895 INFO L226 Difference]: Without dead ends: 876 [2023-11-29 07:09:17,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:09:17,911 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1677 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 5367 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 5800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 5367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:17,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 2873 Invalid, 5800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 5367 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-29 07:09:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-11-29 07:09:18,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 542. [2023-11-29 07:09:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.7112171837708832) internal successors, (717), 437 states have internal predecessors, (717), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2023-11-29 07:09:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 914 transitions. [2023-11-29 07:09:18,144 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 914 transitions. Word has length 75 [2023-11-29 07:09:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:18,145 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 914 transitions. [2023-11-29 07:09:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 914 transitions. [2023-11-29 07:09:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 07:09:18,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:18,152 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:18,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:09:18,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:18,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1775703688, now seen corresponding path program 1 times [2023-11-29 07:09:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:18,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664108190] [2023-11-29 07:09:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:18,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:09:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:09:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 07:09:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 07:09:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:09:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 07:09:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 07:09:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:09:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664108190] [2023-11-29 07:09:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664108190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:09:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490844861] [2023-11-29 07:09:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:18,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:09:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:09:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:09:18,948 INFO L87 Difference]: Start difference. First operand 542 states and 914 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:26,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:26,722 INFO L93 Difference]: Finished difference Result 1409 states and 2453 transitions. [2023-11-29 07:09:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:09:26,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2023-11-29 07:09:26,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:26,729 INFO L225 Difference]: With dead ends: 1409 [2023-11-29 07:09:26,729 INFO L226 Difference]: Without dead ends: 877 [2023-11-29 07:09:26,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-29 07:09:26,733 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 2136 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 5308 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 5928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 5308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:26,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 2691 Invalid, 5928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [620 Valid, 5308 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 07:09:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-11-29 07:09:26,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 542. [2023-11-29 07:09:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.7088305489260143) internal successors, (716), 437 states have internal predecessors, (716), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2023-11-29 07:09:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 913 transitions. [2023-11-29 07:09:26,888 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 913 transitions. Word has length 76 [2023-11-29 07:09:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:26,889 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 913 transitions. [2023-11-29 07:09:26,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 913 transitions. [2023-11-29 07:09:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 07:09:26,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:26,893 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:26,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:09:26,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:26,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:26,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1694545189, now seen corresponding path program 1 times [2023-11-29 07:09:26,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080887049] [2023-11-29 07:09:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:26,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:09:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 07:09:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 07:09:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 07:09:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:09:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 07:09:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 07:09:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:09:27,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:27,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080887049] [2023-11-29 07:09:27,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080887049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:27,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:27,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:27,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958949238] [2023-11-29 07:09:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:27,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:27,536 INFO L87 Difference]: Start difference. First operand 542 states and 913 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 07:09:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:33,233 INFO L93 Difference]: Finished difference Result 1402 states and 2435 transitions. [2023-11-29 07:09:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 07:09:33,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2023-11-29 07:09:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:33,242 INFO L225 Difference]: With dead ends: 1402 [2023-11-29 07:09:33,242 INFO L226 Difference]: Without dead ends: 841 [2023-11-29 07:09:33,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:09:33,248 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1542 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:33,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 1528 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 07:09:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-11-29 07:09:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 519. [2023-11-29 07:09:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 399 states have (on average 1.699248120300752) internal successors, (678), 415 states have internal predecessors, (678), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:09:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 871 transitions. [2023-11-29 07:09:33,425 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 871 transitions. Word has length 76 [2023-11-29 07:09:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:33,425 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 871 transitions. [2023-11-29 07:09:33,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 07:09:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 871 transitions. [2023-11-29 07:09:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 07:09:33,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:33,429 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:33,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 07:09:33,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:33,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash 284735324, now seen corresponding path program 1 times [2023-11-29 07:09:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:33,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633874977] [2023-11-29 07:09:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:33,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:09:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:09:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 07:09:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 07:09:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 07:09:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:09:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 07:09:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:09:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633874977] [2023-11-29 07:09:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633874977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:34,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:34,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:09:34,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107062028] [2023-11-29 07:09:34,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:34,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:09:34,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:34,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:09:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:09:34,181 INFO L87 Difference]: Start difference. First operand 519 states and 871 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:41,350 INFO L93 Difference]: Finished difference Result 1366 states and 2367 transitions. [2023-11-29 07:09:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:09:41,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2023-11-29 07:09:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:41,356 INFO L225 Difference]: With dead ends: 1366 [2023-11-29 07:09:41,356 INFO L226 Difference]: Without dead ends: 835 [2023-11-29 07:09:41,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:09:41,360 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2084 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 5103 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 5711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 5103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:41,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2186 Valid, 2708 Invalid, 5711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [608 Valid, 5103 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 07:09:41,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-29 07:09:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 513. [2023-11-29 07:09:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.6921119592875318) internal successors, (665), 409 states have internal predecessors, (665), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:09:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 858 transitions. [2023-11-29 07:09:41,474 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 858 transitions. Word has length 77 [2023-11-29 07:09:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:41,475 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 858 transitions. [2023-11-29 07:09:41,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 858 transitions. [2023-11-29 07:09:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:09:41,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:41,478 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:41,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 07:09:41,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:41,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2123397328, now seen corresponding path program 1 times [2023-11-29 07:09:41,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:41,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283553693] [2023-11-29 07:09:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:41,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:41,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:09:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:09:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 07:09:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:09:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 07:09:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 07:09:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:09:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:09:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283553693] [2023-11-29 07:09:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283553693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:42,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:42,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:09:42,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036879811] [2023-11-29 07:09:42,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:42,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:09:42,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:09:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:09:42,168 INFO L87 Difference]: Start difference. First operand 513 states and 858 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:49,412 INFO L93 Difference]: Finished difference Result 1338 states and 2318 transitions. [2023-11-29 07:09:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:09:49,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2023-11-29 07:09:49,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:49,419 INFO L225 Difference]: With dead ends: 1338 [2023-11-29 07:09:49,419 INFO L226 Difference]: Without dead ends: 835 [2023-11-29 07:09:49,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:09:49,422 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1036 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 5150 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 5396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 5150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:49,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2687 Invalid, 5396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [246 Valid, 5150 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-29 07:09:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-29 07:09:49,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 513. [2023-11-29 07:09:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 393 states have (on average 1.6895674300254453) internal successors, (664), 409 states have internal predecessors, (664), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:09:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 857 transitions. [2023-11-29 07:09:49,536 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 857 transitions. Word has length 78 [2023-11-29 07:09:49,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:49,536 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 857 transitions. [2023-11-29 07:09:49,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 857 transitions. [2023-11-29 07:09:49,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 07:09:49,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:49,539 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:49,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 07:09:49,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:49,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:49,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1366043847, now seen corresponding path program 1 times [2023-11-29 07:09:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:49,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327684549] [2023-11-29 07:09:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:49,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:09:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:09:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 07:09:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 07:09:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 07:09:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 07:09:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 07:09:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:09:50,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:50,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327684549] [2023-11-29 07:09:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327684549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:50,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:50,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:09:50,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15230877] [2023-11-29 07:09:50,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:50,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:09:50,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:09:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:09:50,166 INFO L87 Difference]: Start difference. First operand 513 states and 857 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:56,898 INFO L93 Difference]: Finished difference Result 1354 states and 2336 transitions. [2023-11-29 07:09:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:09:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 79 [2023-11-29 07:09:56,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:56,903 INFO L225 Difference]: With dead ends: 1354 [2023-11-29 07:09:56,903 INFO L226 Difference]: Without dead ends: 829 [2023-11-29 07:09:56,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:09:56,906 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2039 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 5632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:56,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2141 Valid, 2712 Invalid, 5632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [594 Valid, 5038 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 07:09:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-29 07:09:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 507. [2023-11-29 07:09:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 387 states have (on average 1.682170542635659) internal successors, (651), 403 states have internal predecessors, (651), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:09:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 844 transitions. [2023-11-29 07:09:57,070 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 844 transitions. Word has length 79 [2023-11-29 07:09:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:57,070 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 844 transitions. [2023-11-29 07:09:57,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:09:57,070 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 844 transitions. [2023-11-29 07:09:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 07:09:57,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:57,073 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:57,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 07:09:57,073 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:57,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2199410, now seen corresponding path program 1 times [2023-11-29 07:09:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:57,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834313295] [2023-11-29 07:09:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:09:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:09:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:09:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:09:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 07:09:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 07:09:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 07:09:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 07:09:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 07:09:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:09:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:57,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834313295] [2023-11-29 07:09:57,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834313295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:57,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:57,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:09:57,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153386616] [2023-11-29 07:09:57,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:57,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:09:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:57,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:09:57,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:09:57,728 INFO L87 Difference]: Start difference. First operand 507 states and 844 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:04,467 INFO L93 Difference]: Finished difference Result 1326 states and 2289 transitions. [2023-11-29 07:10:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:10:04,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 80 [2023-11-29 07:10:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:04,472 INFO L225 Difference]: With dead ends: 1326 [2023-11-29 07:10:04,472 INFO L226 Difference]: Without dead ends: 829 [2023-11-29 07:10:04,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:10:04,475 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1967 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 4848 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 5456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 4848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:04,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 2775 Invalid, 5456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [608 Valid, 4848 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 07:10:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-29 07:10:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 507. [2023-11-29 07:10:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 387 states have (on average 1.6795865633074936) internal successors, (650), 403 states have internal predecessors, (650), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:10:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 843 transitions. [2023-11-29 07:10:04,645 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 843 transitions. Word has length 80 [2023-11-29 07:10:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:04,645 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 843 transitions. [2023-11-29 07:10:04,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 843 transitions. [2023-11-29 07:10:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 07:10:04,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:04,649 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:04,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 07:10:04,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:04,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash -934786372, now seen corresponding path program 1 times [2023-11-29 07:10:04,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:04,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432243115] [2023-11-29 07:10:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:04,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:10:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:10:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:10:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 07:10:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 07:10:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 07:10:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 07:10:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:10:05,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:05,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432243115] [2023-11-29 07:10:05,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432243115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:05,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:05,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:10:05,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218782027] [2023-11-29 07:10:05,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:05,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:10:05,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:05,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:10:05,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:10:05,305 INFO L87 Difference]: Start difference. First operand 507 states and 843 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:12,573 INFO L93 Difference]: Finished difference Result 1343 states and 2307 transitions. [2023-11-29 07:10:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:10:12,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2023-11-29 07:10:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:12,580 INFO L225 Difference]: With dead ends: 1343 [2023-11-29 07:10:12,580 INFO L226 Difference]: Without dead ends: 846 [2023-11-29 07:10:12,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-29 07:10:12,583 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1499 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 5404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:12,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 2698 Invalid, 5404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [432 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 07:10:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2023-11-29 07:10:12,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 512. [2023-11-29 07:10:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 392 states have (on average 1.6709183673469388) internal successors, (655), 408 states have internal predecessors, (655), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:10:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 848 transitions. [2023-11-29 07:10:12,738 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 848 transitions. Word has length 81 [2023-11-29 07:10:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:12,738 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 848 transitions. [2023-11-29 07:10:12,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 848 transitions. [2023-11-29 07:10:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 07:10:12,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:12,741 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:12,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 07:10:12,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:12,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:12,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1270411229, now seen corresponding path program 1 times [2023-11-29 07:10:12,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:12,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22404639] [2023-11-29 07:10:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:12,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:10:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:10:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:10:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 07:10:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 07:10:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 07:10:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 07:10:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:10:13,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:13,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22404639] [2023-11-29 07:10:13,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22404639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:13,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:13,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:10:13,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759335760] [2023-11-29 07:10:13,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:13,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:10:13,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:13,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:10:13,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:10:13,379 INFO L87 Difference]: Start difference. First operand 512 states and 848 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:20,613 INFO L93 Difference]: Finished difference Result 1347 states and 2308 transitions. [2023-11-29 07:10:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:10:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2023-11-29 07:10:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:20,620 INFO L225 Difference]: With dead ends: 1347 [2023-11-29 07:10:20,620 INFO L226 Difference]: Without dead ends: 823 [2023-11-29 07:10:20,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:10:20,624 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1498 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 5087 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 5502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 5087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:20,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 2812 Invalid, 5502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [415 Valid, 5087 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-29 07:10:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-11-29 07:10:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 501. [2023-11-29 07:10:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 381 states have (on average 1.669291338582677) internal successors, (636), 397 states have internal predecessors, (636), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:10:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 829 transitions. [2023-11-29 07:10:20,806 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 829 transitions. Word has length 81 [2023-11-29 07:10:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:20,806 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 829 transitions. [2023-11-29 07:10:20,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 829 transitions. [2023-11-29 07:10:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 07:10:20,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:20,809 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:20,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 07:10:20,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:20,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash -954306505, now seen corresponding path program 1 times [2023-11-29 07:10:20,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:20,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426034709] [2023-11-29 07:10:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:10:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:10:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 07:10:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 07:10:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 07:10:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 07:10:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 07:10:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:10:21,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:21,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426034709] [2023-11-29 07:10:21,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426034709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:21,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:21,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:10:21,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295565728] [2023-11-29 07:10:21,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:21,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:10:21,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:21,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:10:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:10:21,351 INFO L87 Difference]: Start difference. First operand 501 states and 829 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:28,382 INFO L93 Difference]: Finished difference Result 1323 states and 2267 transitions. [2023-11-29 07:10:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:10:28,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 82 [2023-11-29 07:10:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:28,396 INFO L225 Difference]: With dead ends: 1323 [2023-11-29 07:10:28,396 INFO L226 Difference]: Without dead ends: 832 [2023-11-29 07:10:28,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:10:28,398 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1461 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 4800 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 5240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 4800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:28,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 2670 Invalid, 5240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [440 Valid, 4800 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 07:10:28,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-11-29 07:10:28,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 507. [2023-11-29 07:10:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 387 states have (on average 1.6589147286821706) internal successors, (642), 403 states have internal predecessors, (642), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:10:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 835 transitions. [2023-11-29 07:10:28,529 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 835 transitions. Word has length 82 [2023-11-29 07:10:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:28,529 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 835 transitions. [2023-11-29 07:10:28,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 835 transitions. [2023-11-29 07:10:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 07:10:28,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:28,531 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:28,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 07:10:28,532 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:28,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -510405831, now seen corresponding path program 1 times [2023-11-29 07:10:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:28,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641037547] [2023-11-29 07:10:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:28,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:28,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:10:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:28,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:10:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 07:10:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 07:10:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 07:10:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 07:10:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:29,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 07:10:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:10:29,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641037547] [2023-11-29 07:10:29,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641037547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:29,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:10:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715062739] [2023-11-29 07:10:29,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:29,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:10:29,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:29,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:10:29,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:10:29,055 INFO L87 Difference]: Start difference. First operand 507 states and 835 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:35,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:35,868 INFO L93 Difference]: Finished difference Result 1328 states and 2270 transitions. [2023-11-29 07:10:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 07:10:35,869 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 82 [2023-11-29 07:10:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:35,874 INFO L225 Difference]: With dead ends: 1328 [2023-11-29 07:10:35,874 INFO L226 Difference]: Without dead ends: 823 [2023-11-29 07:10:35,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-29 07:10:35,876 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1933 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 4813 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 5410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 4813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:35,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 2664 Invalid, 5410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [597 Valid, 4813 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 07:10:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-11-29 07:10:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 501. [2023-11-29 07:10:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 381 states have (on average 1.6666666666666667) internal successors, (635), 397 states have internal predecessors, (635), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-29 07:10:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 828 transitions. [2023-11-29 07:10:36,037 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 828 transitions. Word has length 82 [2023-11-29 07:10:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:36,037 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 828 transitions. [2023-11-29 07:10:36,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:10:36,038 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 828 transitions. [2023-11-29 07:10:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-29 07:10:36,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:36,040 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:36,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 07:10:36,041 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:36,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash -233715614, now seen corresponding path program 1 times [2023-11-29 07:10:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:36,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439708414] [2023-11-29 07:10:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:10:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:10:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:10:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 07:10:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 07:10:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 07:10:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 07:10:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:10:36,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:36,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439708414] [2023-11-29 07:10:36,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439708414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:36,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:36,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:10:36,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109391068] [2023-11-29 07:10:36,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:36,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:10:36,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:10:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:10:36,626 INFO L87 Difference]: Start difference. First operand 501 states and 828 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 07:10:45,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:45,718 INFO L93 Difference]: Finished difference Result 1995 states and 3464 transitions. [2023-11-29 07:10:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 07:10:45,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 83 [2023-11-29 07:10:45,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:45,729 INFO L225 Difference]: With dead ends: 1995 [2023-11-29 07:10:45,730 INFO L226 Difference]: Without dead ends: 1506 [2023-11-29 07:10:45,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:10:45,733 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 3857 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 2944 mSolverCounterSat, 1343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3960 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 4287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1343 IncrementalHoareTripleChecker+Valid, 2944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:45,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3960 Valid, 1608 Invalid, 4287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1343 Valid, 2944 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-29 07:10:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2023-11-29 07:10:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 938. [2023-11-29 07:10:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 717 states have (on average 1.6248256624825663) internal successors, (1165), 747 states have internal predecessors, (1165), 180 states have call successors, (180), 43 states have call predecessors, (180), 40 states have return successors, (185), 171 states have call predecessors, (185), 176 states have call successors, (185) [2023-11-29 07:10:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1530 transitions. [2023-11-29 07:10:46,039 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1530 transitions. Word has length 83 [2023-11-29 07:10:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:46,039 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 1530 transitions. [2023-11-29 07:10:46,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 07:10:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1530 transitions. [2023-11-29 07:10:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 07:10:46,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:46,041 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:46,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 07:10:46,042 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:46,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash 781897754, now seen corresponding path program 1 times [2023-11-29 07:10:46,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:46,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99680825] [2023-11-29 07:10:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:46,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:10:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:10:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:10:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 07:10:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 07:10:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:10:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 07:10:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:10:46,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:46,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99680825] [2023-11-29 07:10:46,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99680825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:46,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822205193] [2023-11-29 07:10:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:46,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:46,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:46,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:46,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:10:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:10:46,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:46,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:46,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822205193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:46,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:10:46,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 07:10:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569513590] [2023-11-29 07:10:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:46,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:10:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:46,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:10:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:10:46,949 INFO L87 Difference]: Start difference. First operand 938 states and 1530 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 07:10:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:47,580 INFO L93 Difference]: Finished difference Result 2702 states and 4486 transitions. [2023-11-29 07:10:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:10:47,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 87 [2023-11-29 07:10:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:47,593 INFO L225 Difference]: With dead ends: 2702 [2023-11-29 07:10:47,593 INFO L226 Difference]: Without dead ends: 1776 [2023-11-29 07:10:47,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:10:47,599 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 771 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:47,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:10:47,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2023-11-29 07:10:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1718. [2023-11-29 07:10:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1323 states have (on average 1.6424792139077853) internal successors, (2173), 1383 states have internal predecessors, (2173), 319 states have call successors, (319), 76 states have call predecessors, (319), 75 states have return successors, (342), 306 states have call predecessors, (342), 315 states have call successors, (342) [2023-11-29 07:10:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2834 transitions. [2023-11-29 07:10:48,177 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2834 transitions. Word has length 87 [2023-11-29 07:10:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:48,177 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2834 transitions. [2023-11-29 07:10:48,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 07:10:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2834 transitions. [2023-11-29 07:10:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 07:10:48,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:48,188 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:48,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:10:48,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:48,389 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -827425500, now seen corresponding path program 1 times [2023-11-29 07:10:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:48,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22999227] [2023-11-29 07:10:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:10:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:10:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:10:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 07:10:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 07:10:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:10:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 07:10:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:10:48,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:48,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22999227] [2023-11-29 07:10:48,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22999227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:48,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51636472] [2023-11-29 07:10:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:48,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:48,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:48,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:48,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:10:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:49,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1546 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:10:49,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:49,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51636472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:10:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 07:10:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096824114] [2023-11-29 07:10:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:10:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:10:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:10:49,286 INFO L87 Difference]: Start difference. First operand 1718 states and 2834 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 07:10:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:50,024 INFO L93 Difference]: Finished difference Result 3863 states and 6422 transitions. [2023-11-29 07:10:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:10:50,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 88 [2023-11-29 07:10:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:50,035 INFO L225 Difference]: With dead ends: 3863 [2023-11-29 07:10:50,035 INFO L226 Difference]: Without dead ends: 2157 [2023-11-29 07:10:50,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:10:50,043 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 769 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:50,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1536 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:10:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2023-11-29 07:10:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 2104. [2023-11-29 07:10:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 1624 states have (on average 1.6545566502463054) internal successors, (2687), 1699 states have internal predecessors, (2687), 388 states have call successors, (388), 91 states have call predecessors, (388), 91 states have return successors, (415), 374 states have call predecessors, (415), 384 states have call successors, (415) [2023-11-29 07:10:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3490 transitions. [2023-11-29 07:10:50,772 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3490 transitions. Word has length 88 [2023-11-29 07:10:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:50,773 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 3490 transitions. [2023-11-29 07:10:50,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-29 07:10:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3490 transitions. [2023-11-29 07:10:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 07:10:50,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:50,775 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:50,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:10:50,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:50,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:50,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1580315322, now seen corresponding path program 1 times [2023-11-29 07:10:50,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:50,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504218357] [2023-11-29 07:10:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:50,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:10:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:10:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:10:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:10:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:10:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:10:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 07:10:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:10:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 07:10:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 07:10:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:10:51,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504218357] [2023-11-29 07:10:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504218357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:51,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:51,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:10:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562231632] [2023-11-29 07:10:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:51,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:10:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:10:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:10:51,536 INFO L87 Difference]: Start difference. First operand 2104 states and 3490 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 07:11:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:06,086 INFO L93 Difference]: Finished difference Result 8652 states and 15499 transitions. [2023-11-29 07:11:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:11:06,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 90 [2023-11-29 07:11:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:06,141 INFO L225 Difference]: With dead ends: 8652 [2023-11-29 07:11:06,141 INFO L226 Difference]: Without dead ends: 6560 [2023-11-29 07:11:06,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:11:06,153 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 3468 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 4751 mSolverCounterSat, 1169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3577 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 5920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1169 IncrementalHoareTripleChecker+Valid, 4751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:06,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3577 Valid, 2244 Invalid, 5920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1169 Valid, 4751 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-29 07:11:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2023-11-29 07:11:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 5184. [2023-11-29 07:11:08,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 3772 states have (on average 1.6267232237539766) internal successors, (6136), 4077 states have internal predecessors, (6136), 1172 states have call successors, (1172), 176 states have call predecessors, (1172), 239 states have return successors, (1964), 1162 states have call predecessors, (1964), 1166 states have call successors, (1964) [2023-11-29 07:11:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 9272 transitions. [2023-11-29 07:11:08,768 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 9272 transitions. Word has length 90 [2023-11-29 07:11:08,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:08,768 INFO L495 AbstractCegarLoop]: Abstraction has 5184 states and 9272 transitions. [2023-11-29 07:11:08,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-29 07:11:08,768 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 9272 transitions. [2023-11-29 07:11:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 07:11:08,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:08,772 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:08,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 07:11:08,772 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:08,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:08,772 INFO L85 PathProgramCache]: Analyzing trace with hash 852566766, now seen corresponding path program 1 times [2023-11-29 07:11:08,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:08,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364502926] [2023-11-29 07:11:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:08,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:11:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:11:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:11:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:11:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:11:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:11:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 07:11:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 07:11:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 07:11:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 07:11:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:11:09,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:09,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364502926] [2023-11-29 07:11:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364502926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:09,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:11:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643555917] [2023-11-29 07:11:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:11:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:11:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:11:09,247 INFO L87 Difference]: Start difference. First operand 5184 states and 9272 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 07:11:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:17,987 INFO L93 Difference]: Finished difference Result 11687 states and 21419 transitions. [2023-11-29 07:11:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:11:17,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 91 [2023-11-29 07:11:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:18,032 INFO L225 Difference]: With dead ends: 11687 [2023-11-29 07:11:18,032 INFO L226 Difference]: Without dead ends: 6515 [2023-11-29 07:11:18,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:11:18,063 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1439 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:18,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1565 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 07:11:18,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2023-11-29 07:11:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 5192. [2023-11-29 07:11:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 3778 states have (on average 1.625198517734251) internal successors, (6140), 4083 states have internal predecessors, (6140), 1172 states have call successors, (1172), 180 states have call predecessors, (1172), 241 states have return successors, (1952), 1160 states have call predecessors, (1952), 1166 states have call successors, (1952) [2023-11-29 07:11:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 9264 transitions. [2023-11-29 07:11:20,683 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 9264 transitions. Word has length 91 [2023-11-29 07:11:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:20,683 INFO L495 AbstractCegarLoop]: Abstraction has 5192 states and 9264 transitions. [2023-11-29 07:11:20,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 07:11:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 9264 transitions. [2023-11-29 07:11:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 07:11:20,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:20,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:20,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 07:11:20,687 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:20,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:20,688 INFO L85 PathProgramCache]: Analyzing trace with hash 488160392, now seen corresponding path program 1 times [2023-11-29 07:11:20,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:20,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785542350] [2023-11-29 07:11:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:11:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:11:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:11:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:11:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:11:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:11:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:11:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:11:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:11:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 07:11:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 07:11:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 07:11:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:21,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785542350] [2023-11-29 07:11:21,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785542350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:21,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:21,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:11:21,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114495799] [2023-11-29 07:11:21,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:21,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:11:21,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:21,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:11:21,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:11:21,208 INFO L87 Difference]: Start difference. First operand 5192 states and 9264 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 07:11:38,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:38,994 INFO L93 Difference]: Finished difference Result 18142 states and 34033 transitions. [2023-11-29 07:11:38,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:11:38,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 99 [2023-11-29 07:11:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:39,070 INFO L225 Difference]: With dead ends: 18142 [2023-11-29 07:11:39,070 INFO L226 Difference]: Without dead ends: 12962 [2023-11-29 07:11:39,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:11:39,096 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 3421 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 4941 mSolverCounterSat, 1090 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3530 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 6031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1090 IncrementalHoareTripleChecker+Valid, 4941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:39,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3530 Valid, 2787 Invalid, 6031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1090 Valid, 4941 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-29 07:11:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2023-11-29 07:11:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 10316. [2023-11-29 07:11:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10316 states, 7511 states have (on average 1.6225535880708295) internal successors, (12187), 8116 states have internal predecessors, (12187), 2321 states have call successors, (2321), 354 states have call predecessors, (2321), 483 states have return successors, (4297), 2307 states have call predecessors, (4297), 2311 states have call successors, (4297) [2023-11-29 07:11:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10316 states to 10316 states and 18805 transitions. [2023-11-29 07:11:43,793 INFO L78 Accepts]: Start accepts. Automaton has 10316 states and 18805 transitions. Word has length 99 [2023-11-29 07:11:43,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:43,793 INFO L495 AbstractCegarLoop]: Abstraction has 10316 states and 18805 transitions. [2023-11-29 07:11:43,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 07:11:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 10316 states and 18805 transitions. [2023-11-29 07:11:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 07:11:43,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:43,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:43,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 07:11:43,797 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:43,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:43,798 INFO L85 PathProgramCache]: Analyzing trace with hash -52508264, now seen corresponding path program 1 times [2023-11-29 07:11:43,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:43,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865228207] [2023-11-29 07:11:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:43,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:11:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:11:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:11:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:11:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:11:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:11:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:11:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 07:11:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 07:11:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:11:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 07:11:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 07:11:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:11:44,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865228207] [2023-11-29 07:11:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865228207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:44,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:44,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:11:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204704736] [2023-11-29 07:11:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:44,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:11:44,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:11:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:11:44,232 INFO L87 Difference]: Start difference. First operand 10316 states and 18805 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, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 07:11:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:56,499 INFO L93 Difference]: Finished difference Result 23151 states and 43985 transitions. [2023-11-29 07:11:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:11:56,500 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, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2023-11-29 07:11:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:56,665 INFO L225 Difference]: With dead ends: 23151 [2023-11-29 07:11:56,665 INFO L226 Difference]: Without dead ends: 12847 [2023-11-29 07:11:56,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:11:56,721 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1423 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:56,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1540 Invalid, 3160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 2760 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 07:11:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12847 states. [2023-11-29 07:12:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12847 to 10356. [2023-11-29 07:12:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10356 states, 7547 states have (on average 1.6201139525639328) internal successors, (12227), 8144 states have internal predecessors, (12227), 2321 states have call successors, (2321), 370 states have call predecessors, (2321), 487 states have return successors, (4279), 2303 states have call predecessors, (4279), 2311 states have call successors, (4279) [2023-11-29 07:12:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10356 states to 10356 states and 18827 transitions. [2023-11-29 07:12:01,282 INFO L78 Accepts]: Start accepts. Automaton has 10356 states and 18827 transitions. Word has length 100 [2023-11-29 07:12:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:12:01,283 INFO L495 AbstractCegarLoop]: Abstraction has 10356 states and 18827 transitions. [2023-11-29 07:12:01,283 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, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 07:12:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 10356 states and 18827 transitions. [2023-11-29 07:12:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 07:12:01,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:12:01,288 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:12:01,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 07:12:01,289 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:12:01,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:12:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1369573936, now seen corresponding path program 1 times [2023-11-29 07:12:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:12:01,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783397905] [2023-11-29 07:12:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:12:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:12:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:12:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:12:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:12:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:12:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:12:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:12:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:12:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:12:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:12:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:12:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 07:12:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:12:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 07:12:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 07:12:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 07:12:01,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:12:01,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783397905] [2023-11-29 07:12:01,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783397905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:12:01,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:12:01,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:12:01,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350808841] [2023-11-29 07:12:01,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:12:01,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:12:01,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:12:01,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:12:01,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:12:01,865 INFO L87 Difference]: Start difference. First operand 10356 states and 18827 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 07:12:26,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:12:26,396 INFO L93 Difference]: Finished difference Result 36180 states and 71349 transitions. [2023-11-29 07:12:26,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:12:26,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 109 [2023-11-29 07:12:26,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:12:26,579 INFO L225 Difference]: With dead ends: 36180 [2023-11-29 07:12:26,580 INFO L226 Difference]: Without dead ends: 25836 [2023-11-29 07:12:26,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:12:26,647 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 4332 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 4838 mSolverCounterSat, 1426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4442 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 6264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1426 IncrementalHoareTripleChecker+Valid, 4838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:12:26,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4442 Valid, 2640 Invalid, 6264 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1426 Valid, 4838 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-29 07:12:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25836 states. [2023-11-29 07:12:35,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25836 to 20680. [2023-11-29 07:12:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20680 states, 15076 states have (on average 1.6172724860705758) internal successors, (24382), 16265 states have internal predecessors, (24382), 4624 states have call successors, (4624), 734 states have call predecessors, (4624), 979 states have return successors, (9660), 4602 states have call predecessors, (9660), 4606 states have call successors, (9660) [2023-11-29 07:12:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20680 states to 20680 states and 38666 transitions. [2023-11-29 07:12:36,034 INFO L78 Accepts]: Start accepts. Automaton has 20680 states and 38666 transitions. Word has length 109 [2023-11-29 07:12:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:12:36,034 INFO L495 AbstractCegarLoop]: Abstraction has 20680 states and 38666 transitions. [2023-11-29 07:12:36,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 07:12:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 20680 states and 38666 transitions. [2023-11-29 07:12:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 07:12:36,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:12:36,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:12:36,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 07:12:36,038 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:12:36,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:12:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash 93497256, now seen corresponding path program 1 times [2023-11-29 07:12:36,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:12:36,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140374983] [2023-11-29 07:12:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:12:36,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:12:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:12:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:12:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:12:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:12:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:12:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:12:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:12:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:12:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:12:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 07:12:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 07:12:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:12:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 07:12:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 07:12:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:12:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 07:12:36,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:12:36,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140374983] [2023-11-29 07:12:36,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140374983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:12:36,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:12:36,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:12:36,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073796351] [2023-11-29 07:12:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:12:36,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:12:36,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:12:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:12:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:12:36,639 INFO L87 Difference]: Start difference. First operand 20680 states and 38666 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:12:56,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:12:56,098 INFO L93 Difference]: Finished difference Result 46319 states and 93097 transitions. [2023-11-29 07:12:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:12:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2023-11-29 07:12:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:12:56,261 INFO L225 Difference]: With dead ends: 46319 [2023-11-29 07:12:56,262 INFO L226 Difference]: Without dead ends: 25651 [2023-11-29 07:12:56,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:12:56,448 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 975 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:12:56,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 1568 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 07:12:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25651 states. [2023-11-29 07:13:06,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25651 to 20760. [2023-11-29 07:13:06,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20760 states, 15148 states have (on average 1.6148666490625825) internal successors, (24462), 16337 states have internal predecessors, (24462), 4624 states have call successors, (4624), 750 states have call predecessors, (4624), 987 states have return successors, (9636), 4594 states have call predecessors, (9636), 4606 states have call successors, (9636) [2023-11-29 07:13:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20760 states to 20760 states and 38722 transitions. [2023-11-29 07:13:06,297 INFO L78 Accepts]: Start accepts. Automaton has 20760 states and 38722 transitions. Word has length 110 [2023-11-29 07:13:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:13:06,297 INFO L495 AbstractCegarLoop]: Abstraction has 20760 states and 38722 transitions. [2023-11-29 07:13:06,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 07:13:06,298 INFO L276 IsEmpty]: Start isEmpty. Operand 20760 states and 38722 transitions. [2023-11-29 07:13:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 07:13:06,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:13:06,304 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:13:06,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 07:13:06,304 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:13:06,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:13:06,305 INFO L85 PathProgramCache]: Analyzing trace with hash 105249586, now seen corresponding path program 1 times [2023-11-29 07:13:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:13:06,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828636089] [2023-11-29 07:13:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:13:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:13:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:13:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:13:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:13:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:13:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:13:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:13:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:13:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:13:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:13:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:13:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 07:13:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 07:13:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:13:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 07:13:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 07:13:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:13:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 07:13:06,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:13:06,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828636089] [2023-11-29 07:13:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828636089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:13:06,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:13:06,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 07:13:06,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71276350] [2023-11-29 07:13:06,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:13:06,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:13:06,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:13:06,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:13:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:13:06,805 INFO L87 Difference]: Start difference. First operand 20760 states and 38722 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 07:13:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:13:44,920 INFO L93 Difference]: Finished difference Result 72480 states and 155119 transitions. [2023-11-29 07:13:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:13:44,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2023-11-29 07:13:44,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:13:45,347 INFO L225 Difference]: With dead ends: 72480 [2023-11-29 07:13:45,347 INFO L226 Difference]: Without dead ends: 51732 [2023-11-29 07:13:45,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:13:45,524 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 2503 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 4980 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 5799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 4980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:13:45,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 2650 Invalid, 5799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [819 Valid, 4980 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-29 07:13:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51732 states. [2023-11-29 07:14:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51732 to 41540. [2023-11-29 07:14:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41540 states, 30317 states have (on average 1.611933898472804) internal successors, (48869), 32690 states have internal predecessors, (48869), 9235 states have call successors, (9235), 1494 states have call predecessors, (9235), 1987 states have return successors, (22753), 9197 states have call predecessors, (22753), 9201 states have call successors, (22753) [2023-11-29 07:14:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41540 states to 41540 states and 80857 transitions. [2023-11-29 07:14:05,343 INFO L78 Accepts]: Start accepts. Automaton has 41540 states and 80857 transitions. Word has length 120 [2023-11-29 07:14:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:14:05,344 INFO L495 AbstractCegarLoop]: Abstraction has 41540 states and 80857 transitions. [2023-11-29 07:14:05,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-29 07:14:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 41540 states and 80857 transitions. [2023-11-29 07:14:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 07:14:05,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:14:05,349 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:14:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 07:14:05,349 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:14:05,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:14:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1853862498, now seen corresponding path program 1 times [2023-11-29 07:14:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:14:05,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698672104] [2023-11-29 07:14:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:14:05,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:14:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:14:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:14:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:14:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:14:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:14:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:14:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:14:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 07:14:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:14:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 07:14:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 07:14:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 07:14:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:14:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 07:14:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 07:14:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:14:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:14:05,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:14:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698672104] [2023-11-29 07:14:05,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698672104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:14:05,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:14:05,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:14:05,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739945449] [2023-11-29 07:14:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:14:05,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:14:05,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:14:05,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:14:05,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:14:05,793 INFO L87 Difference]: Start difference. First operand 41540 states and 80857 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, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 07:14:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:14:39,174 INFO L93 Difference]: Finished difference Result 92847 states and 204707 transitions. [2023-11-29 07:14:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:14:39,175 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, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2023-11-29 07:14:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:14:39,797 INFO L225 Difference]: With dead ends: 92847 [2023-11-29 07:14:39,797 INFO L226 Difference]: Without dead ends: 51271 [2023-11-29 07:14:40,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:14:40,299 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1469 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:14:40,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 1510 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 07:14:40,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51271 states. [2023-11-29 07:14:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51271 to 41529. [2023-11-29 07:14:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41529 states, 30344 states have (on average 1.609214342209333) internal successors, (48830), 32715 states have internal predecessors, (48830), 9187 states have call successors, (9187), 1509 states have call predecessors, (9187), 1997 states have return successors, (22521), 9134 states have call predecessors, (22521), 9153 states have call successors, (22521) [2023-11-29 07:15:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41529 states to 41529 states and 80538 transitions. [2023-11-29 07:15:00,024 INFO L78 Accepts]: Start accepts. Automaton has 41529 states and 80538 transitions. Word has length 121 [2023-11-29 07:15:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:15:00,024 INFO L495 AbstractCegarLoop]: Abstraction has 41529 states and 80538 transitions. [2023-11-29 07:15:00,024 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, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 07:15:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 41529 states and 80538 transitions. [2023-11-29 07:15:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 07:15:00,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:15:00,032 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:15:00,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 07:15:00,032 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:15:00,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:15:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash 226303081, now seen corresponding path program 1 times [2023-11-29 07:15:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:15:00,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872068086] [2023-11-29 07:15:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:15:00,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:15:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:15:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:15:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:15:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:15:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:15:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:15:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:15:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:15:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 07:15:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:15:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 07:15:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 07:15:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 07:15:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 07:15:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 07:15:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 07:15:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 07:15:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 07:15:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:15:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872068086] [2023-11-29 07:15:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872068086] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:15:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199933188] [2023-11-29 07:15:00,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:15:00,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:15:00,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:15:00,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:15:00,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:15:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:15:01,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:15:01,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:15:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 07:15:01,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:15:01,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199933188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:15:01,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:15:01,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-11-29 07:15:01,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285869013] [2023-11-29 07:15:01,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:15:01,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:15:01,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:15:01,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:15:01,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:15:01,202 INFO L87 Difference]: Start difference. First operand 41529 states and 80538 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:15:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:15:31,513 INFO L93 Difference]: Finished difference Result 92879 states and 185100 transitions. [2023-11-29 07:15:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:15:31,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 134 [2023-11-29 07:15:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:15:31,899 INFO L225 Difference]: With dead ends: 92879 [2023-11-29 07:15:31,899 INFO L226 Difference]: Without dead ends: 67116 [2023-11-29 07:15:32,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:15:32,078 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 819 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:15:32,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1677 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:15:32,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67116 states. [2023-11-29 07:16:01,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67116 to 66872. [2023-11-29 07:16:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66872 states, 48973 states have (on average 1.6209748228615768) internal successors, (79384), 52722 states have internal predecessors, (79384), 14655 states have call successors, (14655), 2373 states have call predecessors, (14655), 3243 states have return successors, (38001), 14712 states have call predecessors, (38001), 14605 states have call successors, (38001) [2023-11-29 07:16:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66872 states to 66872 states and 132040 transitions. [2023-11-29 07:16:02,826 INFO L78 Accepts]: Start accepts. Automaton has 66872 states and 132040 transitions. Word has length 134 [2023-11-29 07:16:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:16:02,827 INFO L495 AbstractCegarLoop]: Abstraction has 66872 states and 132040 transitions. [2023-11-29 07:16:02,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 07:16:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 66872 states and 132040 transitions. [2023-11-29 07:16:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 07:16:02,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:16:02,837 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:16:02,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 07:16:03,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:03,038 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:16:03,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:16:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1611091678, now seen corresponding path program 1 times [2023-11-29 07:16:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:16:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318695110] [2023-11-29 07:16:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:16:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:16:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:16:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:16:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:16:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:16:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:16:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:16:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 07:16:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 07:16:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:16:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 07:16:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:16:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 07:16:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 07:16:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 07:16:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 07:16:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 07:16:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 07:16:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 07:16:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:16:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318695110] [2023-11-29 07:16:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318695110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:16:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886393430] [2023-11-29 07:16:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:03,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:03,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:16:03,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:16:03,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:16:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:04,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 07:16:04,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:16:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 07:16:04,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:16:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886393430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:16:04,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:16:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-29 07:16:04,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123339140] [2023-11-29 07:16:04,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:16:04,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 07:16:04,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:16:04,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 07:16:04,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:16:04,336 INFO L87 Difference]: Start difference. First operand 66872 states and 132040 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 07:17:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:17:08,792 INFO L93 Difference]: Finished difference Result 177567 states and 376574 transitions. [2023-11-29 07:17:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:17:08,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 138 [2023-11-29 07:17:08,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:17:10,013 INFO L225 Difference]: With dead ends: 177567 [2023-11-29 07:17:10,014 INFO L226 Difference]: Without dead ends: 104103 [2023-11-29 07:17:10,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:17:10,575 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2309 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 4620 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 5378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 4620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:17:10,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2396 Valid, 2058 Invalid, 5378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 4620 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 07:17:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104103 states. [2023-11-29 07:17:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104103 to 91441. [2023-11-29 07:17:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91441 states, 67252 states have (on average 1.6250520430619164) internal successors, (109288), 72232 states have internal predecessors, (109288), 19765 states have call successors, (19765), 3205 states have call predecessors, (19765), 4423 states have return successors, (54258), 19887 states have call predecessors, (54258), 19699 states have call successors, (54258) [2023-11-29 07:17:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91441 states to 91441 states and 183311 transitions. [2023-11-29 07:17:55,505 INFO L78 Accepts]: Start accepts. Automaton has 91441 states and 183311 transitions. Word has length 138 [2023-11-29 07:17:55,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:17:55,506 INFO L495 AbstractCegarLoop]: Abstraction has 91441 states and 183311 transitions. [2023-11-29 07:17:55,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 07:17:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand 91441 states and 183311 transitions. [2023-11-29 07:17:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-29 07:17:55,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:17:55,519 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:17:55,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:17:55,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e82e78b-5cc8-4d7e-9822-7c3ead235f35/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:17:55,719 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:17:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:17:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 229071890, now seen corresponding path program 1 times [2023-11-29 07:17:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:17:55,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111457183] [2023-11-29 07:17:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:17:55,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:17:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:17:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:17:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 07:17:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:17:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:17:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 07:17:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:17:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:17:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 07:17:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 07:17:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 07:17:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 07:17:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 07:17:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:17:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 07:17:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 07:17:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 07:17:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 07:17:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 07:17:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 07:17:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 07:17:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-29 07:17:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 07:17:56,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:17:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111457183] [2023-11-29 07:17:56,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111457183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:17:56,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:17:56,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:17:56,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220731917] [2023-11-29 07:17:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:17:56,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:17:56,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:17:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:17:56,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:17:56,592 INFO L87 Difference]: Start difference. First operand 91441 states and 183311 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)