./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.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_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/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_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/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_e23368e4-37a4-4e22-ac7f-469b5c2b530c/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 d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:42:40,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:42:40,801 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:42:40,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:42:40,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:42:40,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:42:40,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:42:40,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:42:40,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:42:40,833 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:42:40,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:42:40,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:42:40,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:42:40,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:42:40,836 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:42:40,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:42:40,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:42:40,838 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:42:40,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:42:40,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:42:40,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:42:40,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:42:40,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:42:40,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:42:40,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:42:40,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:42:40,842 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:42:40,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:42:40,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:42:40,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:42:40,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:42:40,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:42:40,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:42:40,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:42:40,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:42:40,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:42:40,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:42:40,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:42:40,845 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:42:40,846 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:42:40,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:42:40,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:42:40,846 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_e23368e4-37a4-4e22-ac7f-469b5c2b530c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d14be9b096a9cbd7bae6b76d9713e8ec6e66d6633cec6a9d1cec5445761f8a9c [2023-11-28 23:42:41,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:42:41,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:42:41,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:42:41,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:42:41,094 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:42:41,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2023-11-28 23:42:43,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:42:44,114 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:42:44,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2023-11-28 23:42:44,137 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/data/5336a0ea2/9fd1266abe6644bf938064fe3568d2ed/FLAG6300de2f1 [2023-11-28 23:42:44,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/data/5336a0ea2/9fd1266abe6644bf938064fe3568d2ed [2023-11-28 23:42:44,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:42:44,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:42:44,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:42:44,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:42:44,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:42:44,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:44,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be5d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44, skipping insertion in model container [2023-11-28 23:42:44,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:44,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:42:44,420 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_e23368e4-37a4-4e22-ac7f-469b5c2b530c/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2023-11-28 23:42:44,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:42:44,703 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:42:44,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2023-11-28 23:42:44,715 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [151] [2023-11-28 23:42:44,715 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [160] [2023-11-28 23:42:44,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [198] [2023-11-28 23:42:44,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [564] [2023-11-28 23:42:44,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [753] [2023-11-28 23:42:44,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [873] [2023-11-28 23:42:44,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1540] [2023-11-28 23:42:44,717 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1558] [2023-11-28 23:42:44,717 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1907] [2023-11-28 23:42:44,723 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_e23368e4-37a4-4e22-ac7f-469b5c2b530c/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c[3233,3246] [2023-11-28 23:42:44,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:42:44,838 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:42:44,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44 WrapperNode [2023-11-28 23:42:44,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:42:44,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:42:44,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:42:44,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:42:44,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:44,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:44,961 INFO L138 Inliner]: procedures = 97, calls = 361, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 1009 [2023-11-28 23:42:44,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:42:44,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:42:44,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:42:44,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:42:44,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:44,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:44,981 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:45,013 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 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]. [2023-11-28 23:42:45,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:45,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:45,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:45,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:45,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:45,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:45,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:42:45,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:42:45,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:42:45,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:42:45,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (1/1) ... [2023-11-28 23:42:45,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:42:45,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:42:45,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:42:45,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:42:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-28 23:42:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-28 23:42:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-28 23:42:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-28 23:42:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-28 23:42:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-28 23:42:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-11-28 23:42:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-11-28 23:42:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-28 23:42:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-28 23:42:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-28 23:42:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-28 23:42:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-28 23:42:45,172 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-28 23:42:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-28 23:42:45,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-28 23:42:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-28 23:42:45,172 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-28 23:42:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-28 23:42:45,173 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-28 23:42:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-28 23:42:45,173 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-28 23:42:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:42:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-28 23:42:45,173 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-11-28 23:42:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-28 23:42:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-28 23:42:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-28 23:42:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-28 23:42:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-28 23:42:45,174 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-28 23:42:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-28 23:42:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-28 23:42:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-28 23:42:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-28 23:42:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-28 23:42:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-28 23:42:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-28 23:42:45,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-28 23:42:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-28 23:42:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-28 23:42:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-28 23:42:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-28 23:42:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-28 23:42:45,176 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-28 23:42:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-28 23:42:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-28 23:42:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-28 23:42:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-28 23:42:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-28 23:42:45,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-28 23:42:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-28 23:42:45,178 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-28 23:42:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:42:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:42:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:42:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:42:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:42:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-28 23:42:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-28 23:42:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-28 23:42:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-28 23:42:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-28 23:42:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-28 23:42:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-28 23:42:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-28 23:42:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-28 23:42:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-28 23:42:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-28 23:42:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-28 23:42:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-28 23:42:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-28 23:42:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-28 23:42:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-28 23:42:45,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-28 23:42:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:42:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:42:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-28 23:42:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-28 23:42:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-28 23:42:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-28 23:42:45,369 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:42:45,372 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:42:46,362 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:42:46,431 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:42:46,432 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 23:42:46,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:42:46 BoogieIcfgContainer [2023-11-28 23:42:46,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:42:46,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:42:46,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:42:46,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:42:46,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:42:44" (1/3) ... [2023-11-28 23:42:46,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b99f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:42:46, skipping insertion in model container [2023-11-28 23:42:46,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:42:44" (2/3) ... [2023-11-28 23:42:46,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b99f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:42:46, skipping insertion in model container [2023-11-28 23:42:46,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:42:46" (3/3) ... [2023-11-28 23:42:46,441 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2023-11-28 23:42:46,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:42:46,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:42:46,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:42:46,517 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;@757d9fd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:42:46,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:42:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 606 states, 460 states have (on average 1.6934782608695653) internal successors, (779), 480 states have internal predecessors, (779), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2023-11-28 23:42:46,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-28 23:42:46,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:42:46,538 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:42:46,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:42:46,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:42:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1753564149, now seen corresponding path program 1 times [2023-11-28 23:42:46,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:42:46,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877847389] [2023-11-28 23:42:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:42:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:42:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:42:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:42:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:42:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:42:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 23:42:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 23:42:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-28 23:42:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:42:47,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:42:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877847389] [2023-11-28 23:42:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877847389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:42:47,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:42:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:42:47,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739174138] [2023-11-28 23:42:47,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:42:47,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:42:47,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:42:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:42:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:42:47,852 INFO L87 Difference]: Start difference. First operand has 606 states, 460 states have (on average 1.6934782608695653) internal successors, (779), 480 states have internal predecessors, (779), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:42:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:42:56,509 INFO L93 Difference]: Finished difference Result 1487 states and 2573 transitions. [2023-11-28 23:42:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:42:56,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2023-11-28 23:42:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:42:56,536 INFO L225 Difference]: With dead ends: 1487 [2023-11-28 23:42:56,536 INFO L226 Difference]: Without dead ends: 882 [2023-11-28 23:42:56,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:42:56,550 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 968 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 5586 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 5778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 5586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:42:56,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 2694 Invalid, 5778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 5586 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-28 23:42:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2023-11-28 23:42:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 612. [2023-11-28 23:42:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 466 states have (on average 1.6802575107296138) internal successors, (783), 486 states have internal predecessors, (783), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2023-11-28 23:42:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1014 transitions. [2023-11-28 23:42:56,862 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1014 transitions. Word has length 56 [2023-11-28 23:42:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:42:56,862 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 1014 transitions. [2023-11-28 23:42:56,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:42:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1014 transitions. [2023-11-28 23:42:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-28 23:42:56,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:42:56,868 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:42:56,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:42:56,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:42:56,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:42:56,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1869492017, now seen corresponding path program 1 times [2023-11-28 23:42:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:42:56,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141713365] [2023-11-28 23:42:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:42:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:42:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:42:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:42:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:42:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-28 23:42:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-28 23:42:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:42:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-28 23:42:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:42:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:42:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141713365] [2023-11-28 23:42:57,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141713365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:42:57,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:42:57,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:42:57,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775708537] [2023-11-28 23:42:57,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:42:57,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:42:57,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:42:57,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:42:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:42:57,505 INFO L87 Difference]: Start difference. First operand 612 states and 1014 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:02,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:02,980 INFO L93 Difference]: Finished difference Result 1478 states and 2526 transitions. [2023-11-28 23:43:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:43:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-11-28 23:43:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:02,994 INFO L225 Difference]: With dead ends: 1478 [2023-11-28 23:43:02,995 INFO L226 Difference]: Without dead ends: 847 [2023-11-28 23:43:02,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:43:03,001 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1486 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:03,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 1341 Invalid, 3245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-28 23:43:03,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-28 23:43:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 589. [2023-11-28 23:43:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 446 states have (on average 1.6704035874439462) internal successors, (745), 464 states have internal predecessors, (745), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 972 transitions. [2023-11-28 23:43:03,158 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 972 transitions. Word has length 57 [2023-11-28 23:43:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:03,159 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 972 transitions. [2023-11-28 23:43:03,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 972 transitions. [2023-11-28 23:43:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-28 23:43:03,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:03,162 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:03,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:43:03,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:03,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:03,163 INFO L85 PathProgramCache]: Analyzing trace with hash -242637117, now seen corresponding path program 1 times [2023-11-28 23:43:03,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:03,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452385793] [2023-11-28 23:43:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:03,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-28 23:43:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:43:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-28 23:43:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452385793] [2023-11-28 23:43:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452385793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:03,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:03,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:43:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303925600] [2023-11-28 23:43:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:03,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:43:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:03,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:43:03,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:43:03,830 INFO L87 Difference]: Start difference. First operand 589 states and 972 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:09,520 INFO L93 Difference]: Finished difference Result 1426 states and 2435 transitions. [2023-11-28 23:43:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:43:09,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-11-28 23:43:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:09,529 INFO L225 Difference]: With dead ends: 1426 [2023-11-28 23:43:09,529 INFO L226 Difference]: Without dead ends: 847 [2023-11-28 23:43:09,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:09,534 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 898 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:09,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1181 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-28 23:43:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-28 23:43:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 589. [2023-11-28 23:43:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 446 states have (on average 1.6681614349775784) internal successors, (744), 464 states have internal predecessors, (744), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 971 transitions. [2023-11-28 23:43:09,656 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 971 transitions. Word has length 57 [2023-11-28 23:43:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:09,657 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 971 transitions. [2023-11-28 23:43:09,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 971 transitions. [2023-11-28 23:43:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-28 23:43:09,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:09,659 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:09,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:43:09,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:09,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1954740673, now seen corresponding path program 1 times [2023-11-28 23:43:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407933572] [2023-11-28 23:43:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-28 23:43:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:43:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-28 23:43:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:10,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:10,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407933572] [2023-11-28 23:43:10,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407933572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:10,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:10,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:43:10,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609495179] [2023-11-28 23:43:10,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:10,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:43:10,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:43:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:10,329 INFO L87 Difference]: Start difference. First operand 589 states and 971 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:43:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:17,276 INFO L93 Difference]: Finished difference Result 1442 states and 2455 transitions. [2023-11-28 23:43:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:43:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 58 [2023-11-28 23:43:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:17,282 INFO L225 Difference]: With dead ends: 1442 [2023-11-28 23:43:17,282 INFO L226 Difference]: Without dead ends: 841 [2023-11-28 23:43:17,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:43:17,286 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 921 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 5416 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2493 SdHoareTripleChecker+Invalid, 5604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 5416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:17,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 2493 Invalid, 5604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 5416 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-28 23:43:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-11-28 23:43:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 583. [2023-11-28 23:43:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 440 states have (on average 1.6613636363636364) internal successors, (731), 458 states have internal predecessors, (731), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 958 transitions. [2023-11-28 23:43:17,375 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 958 transitions. Word has length 58 [2023-11-28 23:43:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:17,375 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 958 transitions. [2023-11-28 23:43:17,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:43:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 958 transitions. [2023-11-28 23:43:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-28 23:43:17,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:17,377 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:17,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:43:17,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:17,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:17,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1628823835, now seen corresponding path program 1 times [2023-11-28 23:43:17,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:17,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460128166] [2023-11-28 23:43:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:17,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 23:43:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:43:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:43:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:17,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:17,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460128166] [2023-11-28 23:43:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460128166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:17,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:43:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363382161] [2023-11-28 23:43:17,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:17,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:43:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:43:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:43:17,963 INFO L87 Difference]: Start difference. First operand 583 states and 958 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:23,503 INFO L93 Difference]: Finished difference Result 1414 states and 2406 transitions. [2023-11-28 23:43:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:43:23,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2023-11-28 23:43:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:23,511 INFO L225 Difference]: With dead ends: 1414 [2023-11-28 23:43:23,512 INFO L226 Difference]: Without dead ends: 841 [2023-11-28 23:43:23,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:23,515 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 874 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:23,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1332 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-28 23:43:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-11-28 23:43:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 583. [2023-11-28 23:43:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 440 states have (on average 1.6590909090909092) internal successors, (730), 458 states have internal predecessors, (730), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 957 transitions. [2023-11-28 23:43:23,653 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 957 transitions. Word has length 59 [2023-11-28 23:43:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:23,653 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 957 transitions. [2023-11-28 23:43:23,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 957 transitions. [2023-11-28 23:43:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-28 23:43:23,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:23,655 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:23,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:43:23,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:23,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1058466690, now seen corresponding path program 1 times [2023-11-28 23:43:23,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:23,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638629836] [2023-11-28 23:43:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:23,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:23,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 23:43:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:43:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-28 23:43:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:24,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:24,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638629836] [2023-11-28 23:43:24,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638629836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:24,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:24,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:43:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513923315] [2023-11-28 23:43:24,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:43:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:43:24,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:24,271 INFO L87 Difference]: Start difference. First operand 583 states and 957 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:43:31,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:31,495 INFO L93 Difference]: Finished difference Result 1430 states and 2424 transitions. [2023-11-28 23:43:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:43:31,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2023-11-28 23:43:31,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:31,501 INFO L225 Difference]: With dead ends: 1430 [2023-11-28 23:43:31,501 INFO L226 Difference]: Without dead ends: 835 [2023-11-28 23:43:31,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:43:31,504 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 905 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 5317 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 5512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 5317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:31,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 2364 Invalid, 5512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [195 Valid, 5317 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-28 23:43:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-28 23:43:31,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 577. [2023-11-28 23:43:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 434 states have (on average 1.652073732718894) internal successors, (717), 452 states have internal predecessors, (717), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 944 transitions. [2023-11-28 23:43:31,593 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 944 transitions. Word has length 60 [2023-11-28 23:43:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:31,593 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 944 transitions. [2023-11-28 23:43:31,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:43:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 944 transitions. [2023-11-28 23:43:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-28 23:43:31,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:31,595 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:31,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:43:31,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:31,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1041316327, now seen corresponding path program 1 times [2023-11-28 23:43:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:31,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992829878] [2023-11-28 23:43:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:31,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 23:43:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-28 23:43:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-28 23:43:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:32,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:32,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992829878] [2023-11-28 23:43:32,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992829878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:32,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:32,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:43:32,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265850179] [2023-11-28 23:43:32,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:32,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:43:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:32,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:43:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:43:32,152 INFO L87 Difference]: Start difference. First operand 577 states and 944 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:37,661 INFO L93 Difference]: Finished difference Result 1402 states and 2377 transitions. [2023-11-28 23:43:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:43:37,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-11-28 23:43:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:37,668 INFO L225 Difference]: With dead ends: 1402 [2023-11-28 23:43:37,668 INFO L226 Difference]: Without dead ends: 835 [2023-11-28 23:43:37,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:37,672 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 863 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 2766 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:37,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1273 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2766 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-28 23:43:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-28 23:43:37,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 577. [2023-11-28 23:43:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 434 states have (on average 1.6497695852534562) internal successors, (716), 452 states have internal predecessors, (716), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:37,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 943 transitions. [2023-11-28 23:43:37,807 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 943 transitions. Word has length 61 [2023-11-28 23:43:37,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:37,807 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 943 transitions. [2023-11-28 23:43:37,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:37,807 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 943 transitions. [2023-11-28 23:43:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 23:43:37,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:37,808 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:37,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:43:37,809 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:37,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:37,809 INFO L85 PathProgramCache]: Analyzing trace with hash 720992991, now seen corresponding path program 1 times [2023-11-28 23:43:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:37,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922332547] [2023-11-28 23:43:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:37,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:43:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-28 23:43:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-28 23:43:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:38,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922332547] [2023-11-28 23:43:38,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922332547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:38,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:38,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:43:38,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442359194] [2023-11-28 23:43:38,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:38,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:43:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:38,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:43:38,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:43:38,378 INFO L87 Difference]: Start difference. First operand 577 states and 943 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:44,089 INFO L93 Difference]: Finished difference Result 1419 states and 2395 transitions. [2023-11-28 23:43:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:43:44,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2023-11-28 23:43:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:44,094 INFO L225 Difference]: With dead ends: 1419 [2023-11-28 23:43:44,094 INFO L226 Difference]: Without dead ends: 852 [2023-11-28 23:43:44,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:43:44,096 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1459 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:44,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1157 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-28 23:43:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-11-28 23:43:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 582. [2023-11-28 23:43:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 439 states have (on average 1.642369020501139) internal successors, (721), 457 states have internal predecessors, (721), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 948 transitions. [2023-11-28 23:43:44,187 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 948 transitions. Word has length 62 [2023-11-28 23:43:44,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:44,188 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 948 transitions. [2023-11-28 23:43:44,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 948 transitions. [2023-11-28 23:43:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 23:43:44,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:44,189 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:44,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 23:43:44,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:44,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:44,190 INFO L85 PathProgramCache]: Analyzing trace with hash 501067614, now seen corresponding path program 1 times [2023-11-28 23:43:44,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:44,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246412059] [2023-11-28 23:43:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:44,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:43:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-28 23:43:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-28 23:43:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:44,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:44,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246412059] [2023-11-28 23:43:44,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246412059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:44,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:44,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:43:44,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031543914] [2023-11-28 23:43:44,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:44,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:43:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:43:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:44,812 INFO L87 Difference]: Start difference. First operand 582 states and 948 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:43:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:51,397 INFO L93 Difference]: Finished difference Result 1423 states and 2396 transitions. [2023-11-28 23:43:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:43:51,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2023-11-28 23:43:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:51,404 INFO L225 Difference]: With dead ends: 1423 [2023-11-28 23:43:51,404 INFO L226 Difference]: Without dead ends: 829 [2023-11-28 23:43:51,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:43:51,408 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 1452 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 5041 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 5469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 5041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:51,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 2292 Invalid, 5469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [428 Valid, 5041 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-28 23:43:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-28 23:43:51,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 571. [2023-11-28 23:43:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 428 states have (on average 1.6401869158878504) internal successors, (702), 446 states have internal predecessors, (702), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:51,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 929 transitions. [2023-11-28 23:43:51,538 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 929 transitions. Word has length 62 [2023-11-28 23:43:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:51,538 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 929 transitions. [2023-11-28 23:43:51,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:43:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 929 transitions. [2023-11-28 23:43:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-28 23:43:51,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:51,540 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:51,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:43:51,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:51,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:51,541 INFO L85 PathProgramCache]: Analyzing trace with hash 350499700, now seen corresponding path program 1 times [2023-11-28 23:43:51,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:51,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890866225] [2023-11-28 23:43:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:51,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:51,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:43:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-28 23:43:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:43:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:52,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:52,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890866225] [2023-11-28 23:43:52,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890866225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:52,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:43:52,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836951725] [2023-11-28 23:43:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:52,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:43:52,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:43:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:43:52,140 INFO L87 Difference]: Start difference. First operand 571 states and 929 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:57,557 INFO L93 Difference]: Finished difference Result 1399 states and 2355 transitions. [2023-11-28 23:43:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:43:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-11-28 23:43:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:57,563 INFO L225 Difference]: With dead ends: 1399 [2023-11-28 23:43:57,563 INFO L226 Difference]: Without dead ends: 838 [2023-11-28 23:43:57,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:57,566 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1408 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:57,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1316 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-28 23:43:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2023-11-28 23:43:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 577. [2023-11-28 23:43:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 434 states have (on average 1.631336405529954) internal successors, (708), 452 states have internal predecessors, (708), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:43:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 935 transitions. [2023-11-28 23:43:57,707 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 935 transitions. Word has length 63 [2023-11-28 23:43:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:57,708 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 935 transitions. [2023-11-28 23:43:57,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 23:43:57,708 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 935 transitions. [2023-11-28 23:43:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-28 23:43:57,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:57,709 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:57,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:43:57,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:57,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:57,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1893483598, now seen corresponding path program 1 times [2023-11-28 23:43:57,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:57,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494553410] [2023-11-28 23:43:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:57,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:43:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:43:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:43:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:43:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-28 23:43:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-28 23:43:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:43:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:43:58,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:58,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494553410] [2023-11-28 23:43:58,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494553410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:58,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:58,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:43:58,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874143490] [2023-11-28 23:43:58,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:58,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:43:58,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:43:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:43:58,293 INFO L87 Difference]: Start difference. First operand 577 states and 935 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:44:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:04,565 INFO L93 Difference]: Finished difference Result 1404 states and 2358 transitions. [2023-11-28 23:44:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:44:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2023-11-28 23:44:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:04,570 INFO L225 Difference]: With dead ends: 1404 [2023-11-28 23:44:04,570 INFO L226 Difference]: Without dead ends: 829 [2023-11-28 23:44:04,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:44:04,573 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1408 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 4960 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 5381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 4960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:04,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 2316 Invalid, 5381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [421 Valid, 4960 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-28 23:44:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-28 23:44:04,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 571. [2023-11-28 23:44:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 428 states have (on average 1.6378504672897196) internal successors, (701), 446 states have internal predecessors, (701), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-28 23:44:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 928 transitions. [2023-11-28 23:44:04,664 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 928 transitions. Word has length 63 [2023-11-28 23:44:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:04,664 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 928 transitions. [2023-11-28 23:44:04,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:44:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 928 transitions. [2023-11-28 23:44:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-28 23:44:04,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:04,665 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:04,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 23:44:04,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:04,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash -427030279, now seen corresponding path program 1 times [2023-11-28 23:44:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:04,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147032627] [2023-11-28 23:44:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:44:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-28 23:44:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:44:05,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147032627] [2023-11-28 23:44:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147032627] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994364485] [2023-11-28 23:44:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:05,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:05,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:05,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:44:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:05,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:44:05,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:05,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:05,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994364485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:05,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:05,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-28 23:44:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801486862] [2023-11-28 23:44:05,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:05,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:44:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:44:05,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:05,506 INFO L87 Difference]: Start difference. First operand 571 states and 928 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:44:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:05,743 INFO L93 Difference]: Finished difference Result 1636 states and 2684 transitions. [2023-11-28 23:44:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:44:05,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2023-11-28 23:44:05,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:05,749 INFO L225 Difference]: With dead ends: 1636 [2023-11-28 23:44:05,749 INFO L226 Difference]: Without dead ends: 1077 [2023-11-28 23:44:05,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:05,752 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 893 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:05,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 2383 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:44:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-11-28 23:44:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2023-11-28 23:44:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 805 states have (on average 1.6459627329192548) internal successors, (1325), 840 states have internal predecessors, (1325), 205 states have call successors, (205), 53 states have call predecessors, (205), 52 states have return successors, (207), 197 states have call predecessors, (207), 202 states have call successors, (207) [2023-11-28 23:44:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1737 transitions. [2023-11-28 23:44:05,919 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1737 transitions. Word has length 64 [2023-11-28 23:44:05,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:05,919 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1737 transitions. [2023-11-28 23:44:05,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:44:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1737 transitions. [2023-11-28 23:44:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-28 23:44:05,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:05,921 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:05,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:06,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:06,122 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:06,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:06,122 INFO L85 PathProgramCache]: Analyzing trace with hash 354206297, now seen corresponding path program 1 times [2023-11-28 23:44:06,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:06,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314178370] [2023-11-28 23:44:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:06,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:44:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-28 23:44:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:44:06,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314178370] [2023-11-28 23:44:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314178370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176257979] [2023-11-28 23:44:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:06,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:06,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:06,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:44:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:06,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:44:06,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:06,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:06,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176257979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:06,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:06,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-28 23:44:06,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975592093] [2023-11-28 23:44:06,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:06,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:44:06,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:06,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:44:06,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:06,956 INFO L87 Difference]: Start difference. First operand 1063 states and 1737 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:44:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:07,262 INFO L93 Difference]: Finished difference Result 2620 states and 4304 transitions. [2023-11-28 23:44:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:44:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2023-11-28 23:44:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:07,271 INFO L225 Difference]: With dead ends: 2620 [2023-11-28 23:44:07,271 INFO L226 Difference]: Without dead ends: 1569 [2023-11-28 23:44:07,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:07,277 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 891 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:07,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1785 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:44:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2023-11-28 23:44:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1523. [2023-11-28 23:44:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1156 states have (on average 1.6557093425605536) internal successors, (1914), 1208 states have internal predecessors, (1914), 292 states have call successors, (292), 74 states have call predecessors, (292), 74 states have return successors, (299), 282 states have call predecessors, (299), 289 states have call successors, (299) [2023-11-28 23:44:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2505 transitions. [2023-11-28 23:44:07,562 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2505 transitions. Word has length 65 [2023-11-28 23:44:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:07,562 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2505 transitions. [2023-11-28 23:44:07,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 23:44:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2505 transitions. [2023-11-28 23:44:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-28 23:44:07,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:07,564 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:07,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:44:07,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:07,765 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:07,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:07,765 INFO L85 PathProgramCache]: Analyzing trace with hash 201037956, now seen corresponding path program 1 times [2023-11-28 23:44:07,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:07,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144355289] [2023-11-28 23:44:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:07,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:44:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:44:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-28 23:44:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:44:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144355289] [2023-11-28 23:44:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144355289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:08,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:44:08,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423195091] [2023-11-28 23:44:08,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:08,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:44:08,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:08,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:44:08,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:44:08,365 INFO L87 Difference]: Start difference. First operand 1523 states and 2505 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-28 23:44:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:20,830 INFO L93 Difference]: Finished difference Result 5873 states and 10383 transitions. [2023-11-28 23:44:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:44:20,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 67 [2023-11-28 23:44:20,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:20,866 INFO L225 Difference]: With dead ends: 5873 [2023-11-28 23:44:20,866 INFO L226 Difference]: Without dead ends: 4362 [2023-11-28 23:44:20,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:44:20,875 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 2411 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 5129 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 5838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 5129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:20,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2561 Valid, 2389 Invalid, 5838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [709 Valid, 5129 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-11-28 23:44:20,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-11-28 23:44:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 3638. [2023-11-28 23:44:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 2620 states have (on average 1.6263358778625954) internal successors, (4261), 2816 states have internal predecessors, (4261), 831 states have call successors, (831), 142 states have call predecessors, (831), 186 states have return successors, (1325), 829 states have call predecessors, (1325), 827 states have call successors, (1325) [2023-11-28 23:44:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 6417 transitions. [2023-11-28 23:44:21,863 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 6417 transitions. Word has length 67 [2023-11-28 23:44:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:21,864 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 6417 transitions. [2023-11-28 23:44:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-28 23:44:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 6417 transitions. [2023-11-28 23:44:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-28 23:44:21,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:21,865 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:21,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 23:44:21,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:21,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1797129790, now seen corresponding path program 1 times [2023-11-28 23:44:21,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:21,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351762403] [2023-11-28 23:44:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:21,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:44:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:44:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-28 23:44:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:44:22,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:22,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351762403] [2023-11-28 23:44:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351762403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11347569] [2023-11-28 23:44:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:22,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:22,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:22,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:22,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:44:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:22,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:44:22,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:22,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11347569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:22,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:44:22,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-28 23:44:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457297530] [2023-11-28 23:44:22,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:22,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:44:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:44:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:44:22,735 INFO L87 Difference]: Start difference. First operand 3638 states and 6417 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-28 23:44:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:25,161 INFO L93 Difference]: Finished difference Result 9835 states and 17621 transitions. [2023-11-28 23:44:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:44:25,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 68 [2023-11-28 23:44:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:25,200 INFO L225 Difference]: With dead ends: 9835 [2023-11-28 23:44:25,201 INFO L226 Difference]: Without dead ends: 6209 [2023-11-28 23:44:25,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:44:25,223 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 799 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:25,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 4107 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:44:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6209 states. [2023-11-28 23:44:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6209 to 6167. [2023-11-28 23:44:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6167 states, 4437 states have (on average 1.587333784088348) internal successors, (7043), 4763 states have internal predecessors, (7043), 1396 states have call successors, (1396), 256 states have call predecessors, (1396), 333 states have return successors, (2353), 1397 states have call predecessors, (2353), 1390 states have call successors, (2353) [2023-11-28 23:44:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6167 states to 6167 states and 10792 transitions. [2023-11-28 23:44:26,988 INFO L78 Accepts]: Start accepts. Automaton has 6167 states and 10792 transitions. Word has length 68 [2023-11-28 23:44:26,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:26,988 INFO L495 AbstractCegarLoop]: Abstraction has 6167 states and 10792 transitions. [2023-11-28 23:44:26,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-28 23:44:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6167 states and 10792 transitions. [2023-11-28 23:44:26,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-28 23:44:26,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:26,989 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:26,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:27,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:44:27,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:27,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1665529125, now seen corresponding path program 1 times [2023-11-28 23:44:27,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:27,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256804118] [2023-11-28 23:44:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:27,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:44:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:44:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-28 23:44:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:44:27,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:27,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256804118] [2023-11-28 23:44:27,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256804118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:27,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:27,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:44:27,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316067859] [2023-11-28 23:44:27,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:27,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:44:27,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:44:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:44:27,604 INFO L87 Difference]: Start difference. First operand 6167 states and 10792 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-28 23:44:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:35,313 INFO L93 Difference]: Finished difference Result 13476 states and 24110 transitions. [2023-11-28 23:44:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:44:35,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2023-11-28 23:44:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:35,364 INFO L225 Difference]: With dead ends: 13476 [2023-11-28 23:44:35,364 INFO L226 Difference]: Without dead ends: 7321 [2023-11-28 23:44:35,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:44:35,390 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 821 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:35,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1397 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-28 23:44:35,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7321 states. [2023-11-28 23:44:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7321 to 6659. [2023-11-28 23:44:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6659 states, 4675 states have (on average 1.5758288770053477) internal successors, (7367), 5041 states have internal predecessors, (7367), 1632 states have call successors, (1632), 260 states have call predecessors, (1632), 351 states have return successors, (2842), 1647 states have call predecessors, (2842), 1626 states have call successors, (2842) [2023-11-28 23:44:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6659 states to 6659 states and 11841 transitions. [2023-11-28 23:44:37,419 INFO L78 Accepts]: Start accepts. Automaton has 6659 states and 11841 transitions. Word has length 68 [2023-11-28 23:44:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:37,420 INFO L495 AbstractCegarLoop]: Abstraction has 6659 states and 11841 transitions. [2023-11-28 23:44:37,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-28 23:44:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6659 states and 11841 transitions. [2023-11-28 23:44:37,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-28 23:44:37,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:37,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:37,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 23:44:37,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:37,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:37,422 INFO L85 PathProgramCache]: Analyzing trace with hash -229863961, now seen corresponding path program 1 times [2023-11-28 23:44:37,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:37,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17184009] [2023-11-28 23:44:37,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:37,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:44:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:44:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:44:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-28 23:44:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:44:37,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17184009] [2023-11-28 23:44:37,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17184009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:37,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:37,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:44:37,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828867337] [2023-11-28 23:44:37,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:37,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:44:37,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:37,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:44:37,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:44:37,993 INFO L87 Difference]: Start difference. First operand 6659 states and 11841 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 23:44:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:52,979 INFO L93 Difference]: Finished difference Result 21265 states and 39591 transitions. [2023-11-28 23:44:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:44:52,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2023-11-28 23:44:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:53,065 INFO L225 Difference]: With dead ends: 21265 [2023-11-28 23:44:53,065 INFO L226 Difference]: Without dead ends: 14618 [2023-11-28 23:44:53,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:44:53,094 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 3484 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 1072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3631 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1072 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:53,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3631 Valid, 2353 Invalid, 5861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1072 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-28 23:44:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14618 states. [2023-11-28 23:44:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14618 to 13207. [2023-11-28 23:44:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13207 states, 9269 states have (on average 1.5719063545150502) internal successors, (14570), 9995 states have internal predecessors, (14570), 3236 states have call successors, (3236), 514 states have call predecessors, (3236), 701 states have return successors, (6510), 3277 states have call predecessors, (6510), 3226 states have call successors, (6510) [2023-11-28 23:44:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13207 states to 13207 states and 24316 transitions. [2023-11-28 23:44:56,948 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 24316 transitions. Word has length 76 [2023-11-28 23:44:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:56,949 INFO L495 AbstractCegarLoop]: Abstraction has 13207 states and 24316 transitions. [2023-11-28 23:44:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 23:44:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 24316 transitions. [2023-11-28 23:44:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-28 23:44:56,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:56,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:56,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-28 23:44:56,950 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:56,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1686583190, now seen corresponding path program 1 times [2023-11-28 23:44:56,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:56,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278398675] [2023-11-28 23:44:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:56,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:44:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:44:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:44:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:44:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:44:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:44:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:44:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:44:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-28 23:44:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:44:57,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:57,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278398675] [2023-11-28 23:44:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278398675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:57,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:57,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:44:57,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188003618] [2023-11-28 23:44:57,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:57,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:44:57,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:44:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:44:57,419 INFO L87 Difference]: Start difference. First operand 13207 states and 24316 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-28 23:45:07,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:07,082 INFO L93 Difference]: Finished difference Result 27690 states and 52355 transitions. [2023-11-28 23:45:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:45:07,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2023-11-28 23:45:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:07,174 INFO L225 Difference]: With dead ends: 27690 [2023-11-28 23:45:07,174 INFO L226 Difference]: Without dead ends: 14495 [2023-11-28 23:45:07,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:45:07,344 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 828 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:07,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1399 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-28 23:45:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14495 states. [2023-11-28 23:45:11,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14495 to 13247. [2023-11-28 23:45:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13247 states, 9305 states have (on average 1.5701235894680279) internal successors, (14610), 10023 states have internal predecessors, (14610), 3236 states have call successors, (3236), 530 states have call predecessors, (3236), 705 states have return successors, (6494), 3273 states have call predecessors, (6494), 3226 states have call successors, (6494) [2023-11-28 23:45:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13247 states to 13247 states and 24340 transitions. [2023-11-28 23:45:11,194 INFO L78 Accepts]: Start accepts. Automaton has 13247 states and 24340 transitions. Word has length 77 [2023-11-28 23:45:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:11,194 INFO L495 AbstractCegarLoop]: Abstraction has 13247 states and 24340 transitions. [2023-11-28 23:45:11,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-28 23:45:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 13247 states and 24340 transitions. [2023-11-28 23:45:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-28 23:45:11,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:11,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:11,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 23:45:11,196 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:11,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash -556731389, now seen corresponding path program 1 times [2023-11-28 23:45:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482474928] [2023-11-28 23:45:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:11,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:45:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:45:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:45:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:45:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:45:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:45:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:45:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-28 23:45:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:45:11,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:11,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482474928] [2023-11-28 23:45:11,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482474928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:11,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:11,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:45:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241829426] [2023-11-28 23:45:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:11,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:45:11,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:45:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:45:11,694 INFO L87 Difference]: Start difference. First operand 13247 states and 24340 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-28 23:45:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:30,600 INFO L93 Difference]: Finished difference Result 42421 states and 83813 transitions. [2023-11-28 23:45:30,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:45:30,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2023-11-28 23:45:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:30,801 INFO L225 Difference]: With dead ends: 42421 [2023-11-28 23:45:30,801 INFO L226 Difference]: Without dead ends: 29186 [2023-11-28 23:45:30,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:45:30,873 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 3493 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 4797 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3640 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 5899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 4797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:30,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3640 Valid, 2278 Invalid, 5899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1102 Valid, 4797 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-28 23:45:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29186 states. [2023-11-28 23:45:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29186 to 26429. [2023-11-28 23:45:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26429 states, 18565 states have (on average 1.567034742795583) internal successors, (29092), 19995 states have internal predecessors, (29092), 6450 states have call successors, (6450), 1054 states have call predecessors, (6450), 1413 states have return successors, (15610), 6539 states have call predecessors, (15610), 6432 states have call successors, (15610) [2023-11-28 23:45:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26429 states to 26429 states and 51152 transitions. [2023-11-28 23:45:38,655 INFO L78 Accepts]: Start accepts. Automaton has 26429 states and 51152 transitions. Word has length 86 [2023-11-28 23:45:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:38,655 INFO L495 AbstractCegarLoop]: Abstraction has 26429 states and 51152 transitions. [2023-11-28 23:45:38,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-28 23:45:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 26429 states and 51152 transitions. [2023-11-28 23:45:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-28 23:45:38,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:38,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:38,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 23:45:38,657 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:38,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1813626346, now seen corresponding path program 1 times [2023-11-28 23:45:38,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:38,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15129502] [2023-11-28 23:45:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:38,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:38,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:45:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:45:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:45:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:45:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:45:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:45:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:45:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:45:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:45:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-28 23:45:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 23:45:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15129502] [2023-11-28 23:45:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15129502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:39,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:39,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:45:39,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171298717] [2023-11-28 23:45:39,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:45:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:45:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:45:39,064 INFO L87 Difference]: Start difference. First operand 26429 states and 51152 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-28 23:45:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:52,907 INFO L93 Difference]: Finished difference Result 55390 states and 112392 transitions. [2023-11-28 23:45:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:45:52,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-11-28 23:45:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:53,090 INFO L225 Difference]: With dead ends: 55390 [2023-11-28 23:45:53,090 INFO L226 Difference]: Without dead ends: 28973 [2023-11-28 23:45:53,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:45:53,218 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 830 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:53,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1408 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-28 23:45:53,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28973 states. [2023-11-28 23:46:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28973 to 26509. [2023-11-28 23:46:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26509 states, 18637 states have (on average 1.5652733809089445) internal successors, (29172), 20067 states have internal predecessors, (29172), 6450 states have call successors, (6450), 1070 states have call predecessors, (6450), 1421 states have return successors, (15590), 6531 states have call predecessors, (15590), 6432 states have call successors, (15590) [2023-11-28 23:46:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26509 states to 26509 states and 51212 transitions. [2023-11-28 23:46:00,959 INFO L78 Accepts]: Start accepts. Automaton has 26509 states and 51212 transitions. Word has length 87 [2023-11-28 23:46:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:46:00,960 INFO L495 AbstractCegarLoop]: Abstraction has 26509 states and 51212 transitions. [2023-11-28 23:46:00,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-28 23:46:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 26509 states and 51212 transitions. [2023-11-28 23:46:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-28 23:46:00,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:46:00,962 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:46:00,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 23:46:00,962 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:46:00,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:46:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1090011016, now seen corresponding path program 1 times [2023-11-28 23:46:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:46:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873819711] [2023-11-28 23:46:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:46:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:46:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:46:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:46:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:46:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:46:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:46:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:46:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:46:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:46:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:46:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:46:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-28 23:46:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-28 23:46:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:46:01,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:46:01,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873819711] [2023-11-28 23:46:01,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873819711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:46:01,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:46:01,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:46:01,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239169545] [2023-11-28 23:46:01,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:46:01,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:46:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:46:01,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:46:01,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:46:01,443 INFO L87 Difference]: Start difference. First operand 26509 states and 51212 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-28 23:46:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:46:28,827 INFO L93 Difference]: Finished difference Result 84973 states and 185125 transitions. [2023-11-28 23:46:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:46:28,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2023-11-28 23:46:28,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:46:29,297 INFO L225 Difference]: With dead ends: 84973 [2023-11-28 23:46:29,297 INFO L226 Difference]: Without dead ends: 58476 [2023-11-28 23:46:29,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:46:29,465 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 2349 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 4984 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 5678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 4984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:46:29,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2496 Valid, 2306 Invalid, 5678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [694 Valid, 4984 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-28 23:46:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58476 states. [2023-11-28 23:46:44,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58476 to 53015. [2023-11-28 23:46:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53015 states, 37277 states have (on average 1.5631622716420313) internal successors, (58270), 40131 states have internal predecessors, (58270), 12884 states have call successors, (12884), 2134 states have call predecessors, (12884), 2853 states have return successors, (40154), 13069 states have call predecessors, (40154), 12850 states have call successors, (40154) [2023-11-28 23:46:45,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53015 states to 53015 states and 111308 transitions. [2023-11-28 23:46:45,199 INFO L78 Accepts]: Start accepts. Automaton has 53015 states and 111308 transitions. Word has length 97 [2023-11-28 23:46:45,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:46:45,199 INFO L495 AbstractCegarLoop]: Abstraction has 53015 states and 111308 transitions. [2023-11-28 23:46:45,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-28 23:46:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 53015 states and 111308 transitions. [2023-11-28 23:46:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-28 23:46:45,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:46:45,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:46:45,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 23:46:45,202 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:46:45,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:46:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash -888306823, now seen corresponding path program 1 times [2023-11-28 23:46:45,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:46:45,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874188886] [2023-11-28 23:46:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:46:45,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:46:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:46:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:46:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:46:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:46:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:46:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:46:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:46:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:46:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:46:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:46:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-28 23:46:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-28 23:46:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:46:45,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:46:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874188886] [2023-11-28 23:46:45,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874188886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:46:45,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:46:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:46:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663514905] [2023-11-28 23:46:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:46:45,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:46:45,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:46:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:46:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:46:45,632 INFO L87 Difference]: Start difference. First operand 53015 states and 111308 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-28 23:47:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:47:08,028 INFO L93 Difference]: Finished difference Result 111150 states and 253313 transitions. [2023-11-28 23:47:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:47:08,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-11-28 23:47:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:47:08,519 INFO L225 Difference]: With dead ends: 111150 [2023-11-28 23:47:08,519 INFO L226 Difference]: Without dead ends: 58147 [2023-11-28 23:47:09,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:47:09,103 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1404 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:47:09,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1345 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-28 23:47:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58147 states. [2023-11-28 23:47:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58147 to 53207. [2023-11-28 23:47:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53207 states, 37453 states have (on average 1.5609430486209381) internal successors, (58462), 40307 states have internal predecessors, (58462), 12884 states have call successors, (12884), 2166 states have call predecessors, (12884), 2869 states have return successors, (40138), 13053 states have call predecessors, (40138), 12850 states have call successors, (40138) [2023-11-28 23:47:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53207 states to 53207 states and 111484 transitions. [2023-11-28 23:47:24,825 INFO L78 Accepts]: Start accepts. Automaton has 53207 states and 111484 transitions. Word has length 98 [2023-11-28 23:47:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:47:24,825 INFO L495 AbstractCegarLoop]: Abstraction has 53207 states and 111484 transitions. [2023-11-28 23:47:24,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-28 23:47:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 53207 states and 111484 transitions. [2023-11-28 23:47:24,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-28 23:47:24,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:47:24,828 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:47:24,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-28 23:47:24,829 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:47:24,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:47:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1219556540, now seen corresponding path program 1 times [2023-11-28 23:47:24,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:47:24,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501010466] [2023-11-28 23:47:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:24,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:47:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:47:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:47:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:47:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:47:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:47:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:47:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:47:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:47:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-28 23:47:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-28 23:47:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-28 23:47:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-28 23:47:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 23:47:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-28 23:47:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-28 23:47:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-28 23:47:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-28 23:47:25,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:47:25,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501010466] [2023-11-28 23:47:25,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501010466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:47:25,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615502004] [2023-11-28 23:47:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:25,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:47:25,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:47:25,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:47:25,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:47:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:26,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:47:26,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:47:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-28 23:47:26,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:47:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615502004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:47:26,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:47:26,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-28 23:47:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267586082] [2023-11-28 23:47:26,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:47:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:47:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:47:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:47:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:47:26,387 INFO L87 Difference]: Start difference. First operand 53207 states and 111484 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-28 23:48:11,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:48:11,396 INFO L93 Difference]: Finished difference Result 191396 states and 430969 transitions. [2023-11-28 23:48:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:48:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 133 [2023-11-28 23:48:11,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:48:13,107 INFO L225 Difference]: With dead ends: 191396 [2023-11-28 23:48:13,108 INFO L226 Difference]: Without dead ends: 138201 [2023-11-28 23:48:13,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2023-11-28 23:48:13,727 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 2710 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 7142 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2892 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 7717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 7142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:48:13,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2892 Valid, 2348 Invalid, 7717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 7142 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-28 23:48:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138201 states. [2023-11-28 23:48:51,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138201 to 127313. [2023-11-28 23:48:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127313 states, 91347 states have (on average 1.564386350947486) internal successors, (142902), 97873 states have internal predecessors, (142902), 28776 states have call successors, (28776), 5382 states have call predecessors, (28776), 7189 states have return successors, (94638), 29241 states have call predecessors, (94638), 28710 states have call successors, (94638) [2023-11-28 23:48:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127313 states to 127313 states and 266316 transitions. [2023-11-28 23:48:53,574 INFO L78 Accepts]: Start accepts. Automaton has 127313 states and 266316 transitions. Word has length 133 [2023-11-28 23:48:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:48:53,574 INFO L495 AbstractCegarLoop]: Abstraction has 127313 states and 266316 transitions. [2023-11-28 23:48:53,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-28 23:48:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 127313 states and 266316 transitions. [2023-11-28 23:48:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-28 23:48:53,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:48:53,576 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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] [2023-11-28 23:48:53,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 23:48:53,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-28 23:48:53,776 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:48:53,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:48:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -316020620, now seen corresponding path program 1 times [2023-11-28 23:48:53,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:48:53,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389157263] [2023-11-28 23:48:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:53,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:48:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:48:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:48:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:48:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:48:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:48:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 23:48:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-28 23:48:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-28 23:48:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-28 23:48:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-28 23:48:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-28 23:48:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-28 23:48:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-28 23:48:54,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:48:54,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389157263] [2023-11-28 23:48:54,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389157263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:48:54,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:48:54,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:48:54,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114178381] [2023-11-28 23:48:54,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:48:54,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:48:54,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:48:54,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:48:54,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:48:54,644 INFO L87 Difference]: Start difference. First operand 127313 states and 266316 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-28 23:49:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:49:55,267 INFO L93 Difference]: Finished difference Result 279451 states and 629187 transitions. [2023-11-28 23:49:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:49:55,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2023-11-28 23:49:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:49:57,364 INFO L225 Difference]: With dead ends: 279451 [2023-11-28 23:49:57,365 INFO L226 Difference]: Without dead ends: 152102 [2023-11-28 23:49:58,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:49:58,231 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 3108 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 4779 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 5695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 4779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:49:58,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3254 Valid, 2039 Invalid, 5695 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [916 Valid, 4779 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-28 23:49:58,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152102 states. [2023-11-28 23:50:38,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152102 to 130520. [2023-11-28 23:50:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130520 states, 93803 states have (on average 1.5582337451893862) internal successors, (146167), 100389 states have internal predecessors, (146167), 29279 states have call successors, (29279), 5651 states have call predecessors, (29279), 7437 states have return successors, (95645), 29650 states have call predecessors, (95645), 29213 states have call successors, (95645) [2023-11-28 23:50:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130520 states to 130520 states and 271091 transitions. [2023-11-28 23:50:40,894 INFO L78 Accepts]: Start accepts. Automaton has 130520 states and 271091 transitions. Word has length 109 [2023-11-28 23:50:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:50:40,894 INFO L495 AbstractCegarLoop]: Abstraction has 130520 states and 271091 transitions. [2023-11-28 23:50:40,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-28 23:50:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 130520 states and 271091 transitions. [2023-11-28 23:50:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-28 23:50:40,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:50:40,901 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:50:40,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-28 23:50:40,901 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:50:40,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:50:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1413510340, now seen corresponding path program 1 times [2023-11-28 23:50:40,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:50:40,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505133087] [2023-11-28 23:50:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:50:40,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:50:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:50:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:41,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:50:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:41,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:50:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:50:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:50:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:50:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:50:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:50:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:50:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-28 23:50:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-28 23:50:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:50:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-28 23:50:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:50:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:50:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:50:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 23:50:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:50:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:50:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:50:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-28 23:50:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-28 23:50:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-28 23:50:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-28 23:50:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-28 23:50:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-28 23:50:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:50:42,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505133087] [2023-11-28 23:50:42,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505133087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:50:42,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:50:42,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-28 23:50:42,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210584530] [2023-11-28 23:50:42,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:50:42,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:50:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:50:42,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:50:42,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:50:42,519 INFO L87 Difference]: Start difference. First operand 130520 states and 271091 transitions. Second operand has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-28 23:52:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:59,049 INFO L93 Difference]: Finished difference Result 398190 states and 1076337 transitions. [2023-11-28 23:52:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 23:52:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 176 [2023-11-28 23:52:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:53:02,527 INFO L225 Difference]: With dead ends: 398190 [2023-11-28 23:53:02,527 INFO L226 Difference]: Without dead ends: 267682 [2023-11-28 23:53:04,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2023-11-28 23:53:04,615 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 6386 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 5734 mSolverCounterSat, 2954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6400 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 8688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2954 IncrementalHoareTripleChecker+Valid, 5734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:53:04,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6400 Valid, 2298 Invalid, 8688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2954 Valid, 5734 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-11-28 23:53:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267682 states. [2023-11-28 23:54:22,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267682 to 188200. [2023-11-28 23:54:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188200 states, 129293 states have (on average 1.5110562830160952) internal successors, (195369), 140145 states have internal predecessors, (195369), 48415 states have call successors, (48415), 7857 states have call predecessors, (48415), 10491 states have return successors, (153687), 49224 states have call predecessors, (153687), 48301 states have call successors, (153687) [2023-11-28 23:54:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188200 states to 188200 states and 397471 transitions. [2023-11-28 23:54:26,422 INFO L78 Accepts]: Start accepts. Automaton has 188200 states and 397471 transitions. Word has length 176 [2023-11-28 23:54:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:54:26,422 INFO L495 AbstractCegarLoop]: Abstraction has 188200 states and 397471 transitions. [2023-11-28 23:54:26,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (26), 7 states have call predecessors, (26), 3 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-28 23:54:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 188200 states and 397471 transitions. [2023-11-28 23:54:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-28 23:54:26,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:54:26,430 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-28 23:54:26,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-28 23:54:26,430 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:54:26,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:54:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash -5461397, now seen corresponding path program 1 times [2023-11-28 23:54:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:54:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986734816] [2023-11-28 23:54:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:54:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:54:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-28 23:54:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:54:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-28 23:54:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:54:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-28 23:54:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 23:54:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:54:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:54:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:54:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-28 23:54:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-28 23:54:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:54:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-28 23:54:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:54:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 23:54:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-28 23:54:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-28 23:54:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-28 23:54:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-28 23:54:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-28 23:54:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:54:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:54:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:54:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 23:54:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:54:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 23:54:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-28 23:54:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-28 23:54:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-11-28 23:54:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-28 23:54:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-28 23:54:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-11-28 23:54:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-28 23:54:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:54:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986734816] [2023-11-28 23:54:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986734816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:54:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309640629] [2023-11-28 23:54:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:54:27,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:54:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:54:27,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:54:27,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23368e4-37a4-4e22-ac7f-469b5c2b530c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:54:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:28,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:54:28,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:54:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-28 23:54:28,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:54:28,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309640629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:54:28,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:54:28,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2023-11-28 23:54:28,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109338699] [2023-11-28 23:54:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:54:28,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:54:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:54:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:54:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:54:28,346 INFO L87 Difference]: Start difference. First operand 188200 states and 397471 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 3 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29)