./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product28.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_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/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_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/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_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/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 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:42:07,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:42:07,186 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:42:07,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:42:07,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:42:07,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:42:07,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:42:07,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:42:07,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:42:07,218 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:42:07,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:42:07,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:42:07,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:42:07,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:42:07,221 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:42:07,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:42:07,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:42:07,223 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:42:07,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:42:07,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:42:07,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:42:07,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:42:07,225 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:42:07,226 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:42:07,226 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:42:07,226 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:42:07,227 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:42:07,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:42:07,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:42:07,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:42:07,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:42:07,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:42:07,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:42:07,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:42:07,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:42:07,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:42:07,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:42:07,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:42:07,230 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:42:07,230 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:42:07,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:42:07,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:42:07,231 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_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 [2023-11-29 06:42:07,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:42:07,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:42:07,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:42:07,484 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:42:07,484 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:42:07,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2023-11-29 06:42:10,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:42:10,837 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:42:10,837 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2023-11-29 06:42:10,864 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/data/a75910cc8/ea19f0e6a64f48aa9178f54da3eeb46f/FLAGfd6d2a17b [2023-11-29 06:42:10,879 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/data/a75910cc8/ea19f0e6a64f48aa9178f54da3eeb46f [2023-11-29 06:42:10,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:42:10,883 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:42:10,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:42:10,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:42:10,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:42:10,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:42:10" (1/1) ... [2023-11-29 06:42:10,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68406e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:10, skipping insertion in model container [2023-11-29 06:42:10,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:42:10" (1/1) ... [2023-11-29 06:42:10,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:42:11,477 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_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c[73050,73063] [2023-11-29 06:42:11,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:42:11,496 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:42:11,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2023-11-29 06:42:11,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [716] [2023-11-29 06:42:11,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [837] [2023-11-29 06:42:11,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [875] [2023-11-29 06:42:11,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2483] [2023-11-29 06:42:11,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [2849] [2023-11-29 06:42:11,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3009] [2023-11-29 06:42:11,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3361] [2023-11-29 06:42:11,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3373] [2023-11-29 06:42:11,510 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3464] [2023-11-29 06:42:11,620 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_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c[73050,73063] [2023-11-29 06:42:11,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:42:11,650 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:42:11,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11 WrapperNode [2023-11-29 06:42:11,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:42:11,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:42:11,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:42:11,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:42:11,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,746 INFO L138 Inliner]: procedures = 97, calls = 345, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 1130 [2023-11-29 06:42:11,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:42:11,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:42:11,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:42:11,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:42:11,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,833 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2023-11-29 06:42:11,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:42:11,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:42:11,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:42:11,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:42:11,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (1/1) ... [2023-11-29 06:42:11,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:42:11,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:11,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:42:11,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:42:12,011 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-29 06:42:12,011 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-29 06:42:12,012 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-29 06:42:12,012 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-29 06:42:12,012 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-29 06:42:12,012 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-29 06:42:12,012 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-29 06:42:12,012 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-29 06:42:12,012 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-29 06:42:12,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-29 06:42:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-29 06:42:12,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-29 06:42:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-29 06:42:12,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-29 06:42:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-29 06:42:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-29 06:42:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-29 06:42:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-29 06:42:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:42:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-29 06:42:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-29 06:42:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-29 06:42:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-29 06:42:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-29 06:42:12,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-29 06:42:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-29 06:42:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-29 06:42:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-29 06:42:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-29 06:42:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-29 06:42:12,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-29 06:42:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-29 06:42:12,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-29 06:42:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-29 06:42:12,017 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-29 06:42:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-11-29 06:42:12,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-11-29 06:42:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-29 06:42:12,018 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-29 06:42:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-29 06:42:12,018 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-29 06:42:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-29 06:42:12,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-29 06:42:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-29 06:42:12,018 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-29 06:42:12,018 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-11-29 06:42:12,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-11-29 06:42:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:42:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:42:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:42:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:42:12,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 06:42:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 06:42:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 06:42:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 06:42:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 06:42:12,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 06:42:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-29 06:42:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-29 06:42:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-29 06:42:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-29 06:42:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-29 06:42:12,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-29 06:42:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-29 06:42:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-29 06:42:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-29 06:42:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-29 06:42:12,022 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-29 06:42:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-29 06:42:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:42:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:42:12,023 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-29 06:42:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-29 06:42:12,024 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-29 06:42:12,024 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-29 06:42:12,237 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:42:12,241 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:42:13,306 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:42:13,399 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:42:13,400 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:42:13,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:42:13 BoogieIcfgContainer [2023-11-29 06:42:13,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:42:13,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:42:13,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:42:13,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:42:13,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:42:10" (1/3) ... [2023-11-29 06:42:13,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6627ec41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:42:13, skipping insertion in model container [2023-11-29 06:42:13,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:42:11" (2/3) ... [2023-11-29 06:42:13,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6627ec41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:42:13, skipping insertion in model container [2023-11-29 06:42:13,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:42:13" (3/3) ... [2023-11-29 06:42:13,409 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2023-11-29 06:42:13,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:42:13,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:42:13,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:42:13,498 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;@671bdb22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:42:13,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:42:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 551 states, 426 states have (on average 1.7230046948356808) internal successors, (734), 449 states have internal predecessors, (734), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 90 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-29 06:42:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 06:42:13,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:13,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:13,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:13,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash -464883476, now seen corresponding path program 1 times [2023-11-29 06:42:13,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:13,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184716053] [2023-11-29 06:42:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:13,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:42:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:42:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:42:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:42:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:14,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:14,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184716053] [2023-11-29 06:42:14,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184716053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:14,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:14,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:42:14,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981641782] [2023-11-29 06:42:14,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:14,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:42:14,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:42:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:42:14,755 INFO L87 Difference]: Start difference. First operand has 551 states, 426 states have (on average 1.7230046948356808) internal successors, (734), 449 states have internal predecessors, (734), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 90 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:21,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:21,125 INFO L93 Difference]: Finished difference Result 1238 states and 2112 transitions. [2023-11-29 06:42:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:42:21,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-11-29 06:42:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:21,150 INFO L225 Difference]: With dead ends: 1238 [2023-11-29 06:42:21,150 INFO L226 Difference]: Without dead ends: 696 [2023-11-29 06:42:21,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:42:21,162 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 693 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:21,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1015 Invalid, 2905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 06:42:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-29 06:42:21,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 547. [2023-11-29 06:42:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.7122641509433962) internal successors, (726), 445 states have internal predecessors, (726), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 06:42:21,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 915 transitions. [2023-11-29 06:42:21,395 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 915 transitions. Word has length 52 [2023-11-29 06:42:21,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:21,395 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 915 transitions. [2023-11-29 06:42:21,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:21,396 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 915 transitions. [2023-11-29 06:42:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 06:42:21,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:21,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:21,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:42:21,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:21,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2113347507, now seen corresponding path program 1 times [2023-11-29 06:42:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:21,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949770874] [2023-11-29 06:42:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:21,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:42:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:21,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:42:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:22,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:42:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:22,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:42:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:22,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949770874] [2023-11-29 06:42:22,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949770874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:22,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:22,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:42:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408621956] [2023-11-29 06:42:22,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:22,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:42:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:22,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:42:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:42:22,243 INFO L87 Difference]: Start difference. First operand 547 states and 915 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:28,170 INFO L93 Difference]: Finished difference Result 1231 states and 2085 transitions. [2023-11-29 06:42:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:42:28,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-11-29 06:42:28,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:28,179 INFO L225 Difference]: With dead ends: 1231 [2023-11-29 06:42:28,179 INFO L226 Difference]: Without dead ends: 696 [2023-11-29 06:42:28,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:42:28,184 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 689 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:28,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1012 Invalid, 2895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 06:42:28,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-29 06:42:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 547. [2023-11-29 06:42:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.7099056603773586) internal successors, (725), 445 states have internal predecessors, (725), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 06:42:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 914 transitions. [2023-11-29 06:42:28,302 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 914 transitions. Word has length 54 [2023-11-29 06:42:28,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:28,303 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 914 transitions. [2023-11-29 06:42:28,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 914 transitions. [2023-11-29 06:42:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 06:42:28,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:28,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:28,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:42:28,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:28,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1053526157, now seen corresponding path program 1 times [2023-11-29 06:42:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:28,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825891570] [2023-11-29 06:42:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:28,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:42:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:42:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 06:42:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:42:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:28,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:28,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825891570] [2023-11-29 06:42:28,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825891570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:28,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:28,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:42:28,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474683876] [2023-11-29 06:42:28,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:28,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:42:28,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:42:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:42:28,967 INFO L87 Difference]: Start difference. First operand 547 states and 914 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:34,206 INFO L93 Difference]: Finished difference Result 1231 states and 2084 transitions. [2023-11-29 06:42:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:42:34,207 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2023-11-29 06:42:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:34,211 INFO L225 Difference]: With dead ends: 1231 [2023-11-29 06:42:34,211 INFO L226 Difference]: Without dead ends: 696 [2023-11-29 06:42:34,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:42:34,214 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 687 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:34,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1021 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 06:42:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-29 06:42:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 547. [2023-11-29 06:42:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.7075471698113207) internal successors, (724), 445 states have internal predecessors, (724), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 06:42:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 913 transitions. [2023-11-29 06:42:34,320 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 913 transitions. Word has length 55 [2023-11-29 06:42:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:34,320 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 913 transitions. [2023-11-29 06:42:34,321 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 913 transitions. [2023-11-29 06:42:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 06:42:34,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:34,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:34,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:42:34,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:34,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1148538697, now seen corresponding path program 1 times [2023-11-29 06:42:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:34,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899032942] [2023-11-29 06:42:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:34,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:42:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:42:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 06:42:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:42:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:34,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899032942] [2023-11-29 06:42:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899032942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:34,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:34,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:42:34,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742962205] [2023-11-29 06:42:34,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:34,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:42:34,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:42:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:42:34,941 INFO L87 Difference]: Start difference. First operand 547 states and 913 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:40,705 INFO L93 Difference]: Finished difference Result 1231 states and 2083 transitions. [2023-11-29 06:42:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:42:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-29 06:42:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:40,711 INFO L225 Difference]: With dead ends: 1231 [2023-11-29 06:42:40,711 INFO L226 Difference]: Without dead ends: 696 [2023-11-29 06:42:40,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:42:40,714 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1136 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:40,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 1034 Invalid, 2883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 06:42:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-29 06:42:40,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 547. [2023-11-29 06:42:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.705188679245283) internal successors, (723), 445 states have internal predecessors, (723), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 06:42:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 912 transitions. [2023-11-29 06:42:40,808 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 912 transitions. Word has length 56 [2023-11-29 06:42:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:40,808 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 912 transitions. [2023-11-29 06:42:40,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:40,809 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 912 transitions. [2023-11-29 06:42:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 06:42:40,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:40,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:40,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:42:40,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:40,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:40,812 INFO L85 PathProgramCache]: Analyzing trace with hash -505136905, now seen corresponding path program 1 times [2023-11-29 06:42:40,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:40,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480495977] [2023-11-29 06:42:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:40,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:42:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:42:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 06:42:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:42:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:41,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:41,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480495977] [2023-11-29 06:42:41,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480495977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:41,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:41,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:42:41,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289338378] [2023-11-29 06:42:41,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:41,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:42:41,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:42:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:42:41,472 INFO L87 Difference]: Start difference. First operand 547 states and 912 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:47,314 INFO L93 Difference]: Finished difference Result 1231 states and 2082 transitions. [2023-11-29 06:42:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:42:47,315 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-11-29 06:42:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:47,320 INFO L225 Difference]: With dead ends: 1231 [2023-11-29 06:42:47,320 INFO L226 Difference]: Without dead ends: 696 [2023-11-29 06:42:47,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:42:47,324 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 1140 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:47,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 998 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 06:42:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-29 06:42:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 547. [2023-11-29 06:42:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 424 states have (on average 1.7028301886792452) internal successors, (722), 445 states have internal predecessors, (722), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 06:42:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 911 transitions. [2023-11-29 06:42:47,435 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 911 transitions. Word has length 57 [2023-11-29 06:42:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:47,435 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 911 transitions. [2023-11-29 06:42:47,435 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:42:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 911 transitions. [2023-11-29 06:42:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 06:42:47,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:47,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:47,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:42:47,438 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:47,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:47,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1554272699, now seen corresponding path program 1 times [2023-11-29 06:42:47,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:47,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16152861] [2023-11-29 06:42:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:47,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:42:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:48,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 06:42:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:48,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:42:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:48,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:48,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16152861] [2023-11-29 06:42:48,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16152861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:48,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:48,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 06:42:48,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186612818] [2023-11-29 06:42:48,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:48,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:42:48,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:48,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:42:48,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:42:48,155 INFO L87 Difference]: Start difference. First operand 547 states and 911 transitions. Second operand has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 06:42:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:55,992 INFO L93 Difference]: Finished difference Result 1207 states and 2031 transitions. [2023-11-29 06:42:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:42:55,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 58 [2023-11-29 06:42:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:55,998 INFO L225 Difference]: With dead ends: 1207 [2023-11-29 06:42:55,999 INFO L226 Difference]: Without dead ends: 720 [2023-11-29 06:42:56,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:42:56,002 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 802 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 5786 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 5909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 5786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:56,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2117 Invalid, 5909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 5786 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 06:42:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-11-29 06:42:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 559. [2023-11-29 06:42:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.699769053117783) internal successors, (736), 456 states have internal predecessors, (736), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 90 states have call predecessors, (95), 93 states have call successors, (95) [2023-11-29 06:42:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 929 transitions. [2023-11-29 06:42:56,107 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 929 transitions. Word has length 58 [2023-11-29 06:42:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:56,107 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 929 transitions. [2023-11-29 06:42:56,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 06:42:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 929 transitions. [2023-11-29 06:42:56,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 06:42:56,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:56,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:56,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:42:56,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:56,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash -769755140, now seen corresponding path program 1 times [2023-11-29 06:42:56,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:56,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930056826] [2023-11-29 06:42:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:42:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 06:42:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:42:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:42:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:42:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:56,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:56,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930056826] [2023-11-29 06:42:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930056826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:56,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:56,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:42:56,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070114833] [2023-11-29 06:42:56,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:56,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:42:56,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:42:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:42:56,726 INFO L87 Difference]: Start difference. First operand 559 states and 929 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:43:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:01,844 INFO L93 Difference]: Finished difference Result 1219 states and 2052 transitions. [2023-11-29 06:43:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:43:01,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2023-11-29 06:43:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:01,849 INFO L225 Difference]: With dead ends: 1219 [2023-11-29 06:43:01,849 INFO L226 Difference]: Without dead ends: 716 [2023-11-29 06:43:01,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:43:01,851 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1226 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:01,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 1013 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 06:43:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-11-29 06:43:01,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 559. [2023-11-29 06:43:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.6882217090069285) internal successors, (731), 456 states have internal predecessors, (731), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 90 states have call predecessors, (95), 93 states have call successors, (95) [2023-11-29 06:43:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 924 transitions. [2023-11-29 06:43:01,981 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 924 transitions. Word has length 58 [2023-11-29 06:43:01,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:01,981 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 924 transitions. [2023-11-29 06:43:01,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:43:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 924 transitions. [2023-11-29 06:43:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:43:01,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:01,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:43:01,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:43:01,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:01,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1687349652, now seen corresponding path program 1 times [2023-11-29 06:43:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286535642] [2023-11-29 06:43:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:43:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:02,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:02,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286535642] [2023-11-29 06:43:02,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286535642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:02,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:02,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:43:02,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928686235] [2023-11-29 06:43:02,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:02,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:43:02,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:43:02,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:43:02,558 INFO L87 Difference]: Start difference. First operand 559 states and 924 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:43:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:08,050 INFO L93 Difference]: Finished difference Result 1219 states and 2047 transitions. [2023-11-29 06:43:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:43:08,051 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2023-11-29 06:43:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:08,055 INFO L225 Difference]: With dead ends: 1219 [2023-11-29 06:43:08,056 INFO L226 Difference]: Without dead ends: 716 [2023-11-29 06:43:08,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:43:08,059 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1219 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:08,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1022 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 06:43:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-11-29 06:43:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 559. [2023-11-29 06:43:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.6766743648960738) internal successors, (726), 456 states have internal predecessors, (726), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 90 states have call predecessors, (95), 93 states have call successors, (95) [2023-11-29 06:43:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 919 transitions. [2023-11-29 06:43:08,225 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 919 transitions. Word has length 59 [2023-11-29 06:43:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:08,226 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 919 transitions. [2023-11-29 06:43:08,226 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:43:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 919 transitions. [2023-11-29 06:43:08,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 06:43:08,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:08,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:43:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:43:08,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:08,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1350043049, now seen corresponding path program 1 times [2023-11-29 06:43:08,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:08,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501327008] [2023-11-29 06:43:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 06:43:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:08,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:08,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501327008] [2023-11-29 06:43:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501327008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:08,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:08,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:43:08,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898356384] [2023-11-29 06:43:08,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:08,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:43:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:43:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:43:08,881 INFO L87 Difference]: Start difference. First operand 559 states and 919 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:43:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:14,281 INFO L93 Difference]: Finished difference Result 1219 states and 2042 transitions. [2023-11-29 06:43:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:43:14,282 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 60 [2023-11-29 06:43:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:14,287 INFO L225 Difference]: With dead ends: 1219 [2023-11-29 06:43:14,287 INFO L226 Difference]: Without dead ends: 716 [2023-11-29 06:43:14,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:43:14,289 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 763 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:14,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1009 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 06:43:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-11-29 06:43:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 559. [2023-11-29 06:43:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 433 states have (on average 1.6651270207852193) internal successors, (721), 456 states have internal predecessors, (721), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 90 states have call predecessors, (95), 93 states have call successors, (95) [2023-11-29 06:43:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 914 transitions. [2023-11-29 06:43:14,388 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 914 transitions. Word has length 60 [2023-11-29 06:43:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:14,388 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 914 transitions. [2023-11-29 06:43:14,388 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 06:43:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 914 transitions. [2023-11-29 06:43:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 06:43:14,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:14,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:43:14,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:43:14,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:14,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1653039879, now seen corresponding path program 1 times [2023-11-29 06:43:14,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:14,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540981839] [2023-11-29 06:43:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:14,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:14,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:43:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:15,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:15,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:15,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540981839] [2023-11-29 06:43:15,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540981839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:15,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:15,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:43:15,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888696046] [2023-11-29 06:43:15,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:15,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:43:15,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:15,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:43:15,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:43:15,269 INFO L87 Difference]: Start difference. First operand 559 states and 914 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 06:43:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:24,717 INFO L93 Difference]: Finished difference Result 1218 states and 2034 transitions. [2023-11-29 06:43:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:43:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2023-11-29 06:43:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:24,724 INFO L225 Difference]: With dead ends: 1218 [2023-11-29 06:43:24,724 INFO L226 Difference]: Without dead ends: 729 [2023-11-29 06:43:24,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-11-29 06:43:24,727 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1264 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 7142 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 7414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 7142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:24,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2599 Invalid, 7414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [272 Valid, 7142 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-29 06:43:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-11-29 06:43:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 563. [2023-11-29 06:43:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 436 states have (on average 1.658256880733945) internal successors, (723), 459 states have internal predecessors, (723), 98 states have call successors, (98), 26 states have call predecessors, (98), 28 states have return successors, (97), 91 states have call predecessors, (97), 93 states have call successors, (97) [2023-11-29 06:43:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 918 transitions. [2023-11-29 06:43:24,838 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 918 transitions. Word has length 61 [2023-11-29 06:43:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:24,838 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 918 transitions. [2023-11-29 06:43:24,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 06:43:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 918 transitions. [2023-11-29 06:43:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 06:43:24,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:24,840 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] [2023-11-29 06:43:24,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:43:24,840 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:24,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1033409918, now seen corresponding path program 1 times [2023-11-29 06:43:24,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:24,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685395009] [2023-11-29 06:43:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:43:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:43:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:43:25,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685395009] [2023-11-29 06:43:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685395009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:43:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982274204] [2023-11-29 06:43:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:25,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:43:25,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:43:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:43:25,495 INFO L87 Difference]: Start difference. First operand 563 states and 918 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 06:43:30,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:30,102 INFO L93 Difference]: Finished difference Result 1229 states and 2047 transitions. [2023-11-29 06:43:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:43:30,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2023-11-29 06:43:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:30,107 INFO L225 Difference]: With dead ends: 1229 [2023-11-29 06:43:30,107 INFO L226 Difference]: Without dead ends: 722 [2023-11-29 06:43:30,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:43:30,110 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1219 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:30,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 997 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 06:43:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-29 06:43:30,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 563. [2023-11-29 06:43:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 436 states have (on average 1.646788990825688) internal successors, (718), 459 states have internal predecessors, (718), 98 states have call successors, (98), 26 states have call predecessors, (98), 28 states have return successors, (97), 91 states have call predecessors, (97), 93 states have call successors, (97) [2023-11-29 06:43:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 913 transitions. [2023-11-29 06:43:30,216 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 913 transitions. Word has length 66 [2023-11-29 06:43:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:30,216 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 913 transitions. [2023-11-29 06:43:30,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 06:43:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 913 transitions. [2023-11-29 06:43:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 06:43:30,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:30,219 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] [2023-11-29 06:43:30,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:43:30,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:30,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1891838641, now seen corresponding path program 1 times [2023-11-29 06:43:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:30,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777475126] [2023-11-29 06:43:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 06:43:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:43:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:43:30,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777475126] [2023-11-29 06:43:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777475126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:30,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:30,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:43:30,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379468621] [2023-11-29 06:43:30,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:30,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:43:30,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:43:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:43:30,902 INFO L87 Difference]: Start difference. First operand 563 states and 913 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 06:43:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:38,812 INFO L93 Difference]: Finished difference Result 1238 states and 2052 transitions. [2023-11-29 06:43:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:43:38,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 67 [2023-11-29 06:43:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:38,818 INFO L225 Difference]: With dead ends: 1238 [2023-11-29 06:43:38,818 INFO L226 Difference]: Without dead ends: 743 [2023-11-29 06:43:38,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:43:38,820 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 759 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 4863 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 4992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 4863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:38,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1775 Invalid, 4992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 4863 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 06:43:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-11-29 06:43:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 566. [2023-11-29 06:43:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 439 states have (on average 1.6400911161731206) internal successors, (720), 462 states have internal predecessors, (720), 98 states have call successors, (98), 26 states have call predecessors, (98), 28 states have return successors, (97), 91 states have call predecessors, (97), 93 states have call successors, (97) [2023-11-29 06:43:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2023-11-29 06:43:38,902 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 67 [2023-11-29 06:43:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:38,902 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2023-11-29 06:43:38,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 06:43:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2023-11-29 06:43:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 06:43:38,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:38,904 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] [2023-11-29 06:43:38,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:43:38,904 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:38,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash -482995245, now seen corresponding path program 1 times [2023-11-29 06:43:38,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:38,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232824668] [2023-11-29 06:43:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:38,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 06:43:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:43:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:43:39,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:39,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232824668] [2023-11-29 06:43:39,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232824668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:39,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:39,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:43:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865068963] [2023-11-29 06:43:39,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:39,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:43:39,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:43:39,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:43:39,515 INFO L87 Difference]: Start difference. First operand 566 states and 915 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 06:43:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:44,723 INFO L93 Difference]: Finished difference Result 1238 states and 2048 transitions. [2023-11-29 06:43:44,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:43:44,724 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2023-11-29 06:43:44,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:44,729 INFO L225 Difference]: With dead ends: 1238 [2023-11-29 06:43:44,729 INFO L226 Difference]: Without dead ends: 728 [2023-11-29 06:43:44,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:43:44,731 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 759 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:44,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1000 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 06:43:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-11-29 06:43:44,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 566. [2023-11-29 06:43:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 439 states have (on average 1.6287015945330297) internal successors, (715), 462 states have internal predecessors, (715), 98 states have call successors, (98), 26 states have call predecessors, (98), 28 states have return successors, (97), 91 states have call predecessors, (97), 93 states have call successors, (97) [2023-11-29 06:43:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 910 transitions. [2023-11-29 06:43:44,828 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 910 transitions. Word has length 67 [2023-11-29 06:43:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:44,828 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 910 transitions. [2023-11-29 06:43:44,829 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, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 06:43:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 910 transitions. [2023-11-29 06:43:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 06:43:44,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:44,830 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] [2023-11-29 06:43:44,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:43:44,830 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:44,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:44,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1617825085, now seen corresponding path program 1 times [2023-11-29 06:43:44,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:44,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097848609] [2023-11-29 06:43:44,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:44,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 06:43:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:43:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:43:45,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:45,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097848609] [2023-11-29 06:43:45,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097848609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:45,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:45,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:43:45,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830982982] [2023-11-29 06:43:45,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:45,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:43:45,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:45,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:43:45,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:43:45,457 INFO L87 Difference]: Start difference. First operand 566 states and 910 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 06:43:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:52,432 INFO L93 Difference]: Finished difference Result 1244 states and 2049 transitions. [2023-11-29 06:43:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:43:52,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 68 [2023-11-29 06:43:52,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:52,436 INFO L225 Difference]: With dead ends: 1244 [2023-11-29 06:43:52,436 INFO L226 Difference]: Without dead ends: 749 [2023-11-29 06:43:52,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:43:52,438 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1210 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 4709 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 4709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:52,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 1804 Invalid, 4979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [270 Valid, 4709 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 06:43:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-11-29 06:43:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 570. [2023-11-29 06:43:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 443 states have (on average 1.6207674943566592) internal successors, (718), 466 states have internal predecessors, (718), 98 states have call successors, (98), 26 states have call predecessors, (98), 28 states have return successors, (97), 91 states have call predecessors, (97), 93 states have call successors, (97) [2023-11-29 06:43:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 913 transitions. [2023-11-29 06:43:52,557 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 913 transitions. Word has length 68 [2023-11-29 06:43:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:52,557 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 913 transitions. [2023-11-29 06:43:52,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 06:43:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 913 transitions. [2023-11-29 06:43:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 06:43:52,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:52,559 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] [2023-11-29 06:43:52,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:43:52,559 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:52,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:52,560 INFO L85 PathProgramCache]: Analyzing trace with hash -160682845, now seen corresponding path program 1 times [2023-11-29 06:43:52,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:52,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733832914] [2023-11-29 06:43:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:52,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:52,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:52,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:52,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 06:43:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:53,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:53,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:43:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:43:53,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:53,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733832914] [2023-11-29 06:43:53,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733832914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:53,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:53,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:43:53,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784227260] [2023-11-29 06:43:53,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:53,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:43:53,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:53,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:43:53,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:43:53,112 INFO L87 Difference]: Start difference. First operand 570 states and 913 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 06:43:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:58,810 INFO L93 Difference]: Finished difference Result 1286 states and 2093 transitions. [2023-11-29 06:43:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:43:58,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 68 [2023-11-29 06:43:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:58,815 INFO L225 Difference]: With dead ends: 1286 [2023-11-29 06:43:58,815 INFO L226 Difference]: Without dead ends: 710 [2023-11-29 06:43:58,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:43:58,817 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 675 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:58,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 997 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 06:43:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-11-29 06:43:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 552. [2023-11-29 06:43:58,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 428 states have (on average 1.6285046728971964) internal successors, (697), 449 states have internal predecessors, (697), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2023-11-29 06:43:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 888 transitions. [2023-11-29 06:43:58,911 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 888 transitions. Word has length 68 [2023-11-29 06:43:58,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:58,912 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 888 transitions. [2023-11-29 06:43:58,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 06:43:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 888 transitions. [2023-11-29 06:43:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 06:43:58,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:58,913 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:43:58,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:43:58,913 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:58,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash -991734090, now seen corresponding path program 1 times [2023-11-29 06:43:58,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:58,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787306449] [2023-11-29 06:43:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:58,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:43:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 06:43:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:43:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:43:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:43:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:43:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:43:59,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:59,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787306449] [2023-11-29 06:43:59,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787306449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:59,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:59,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:43:59,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032854829] [2023-11-29 06:43:59,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:59,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:43:59,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:59,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:43:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:43:59,513 INFO L87 Difference]: Start difference. First operand 552 states and 888 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 06:44:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:06,824 INFO L93 Difference]: Finished difference Result 1220 states and 2007 transitions. [2023-11-29 06:44:06,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:44:06,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 69 [2023-11-29 06:44:06,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:06,829 INFO L225 Difference]: With dead ends: 1220 [2023-11-29 06:44:06,829 INFO L226 Difference]: Without dead ends: 727 [2023-11-29 06:44:06,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:44:06,831 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1170 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 4642 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 4901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 4642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:06,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1831 Invalid, 4901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [259 Valid, 4642 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 06:44:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2023-11-29 06:44:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 557. [2023-11-29 06:44:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 433 states have (on average 1.6212471131639723) internal successors, (702), 454 states have internal predecessors, (702), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2023-11-29 06:44:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 893 transitions. [2023-11-29 06:44:06,926 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 893 transitions. Word has length 69 [2023-11-29 06:44:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:06,926 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 893 transitions. [2023-11-29 06:44:06,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 06:44:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 893 transitions. [2023-11-29 06:44:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 06:44:06,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:06,928 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:06,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:44:06,929 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:06,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash -719555336, now seen corresponding path program 1 times [2023-11-29 06:44:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:06,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317140919] [2023-11-29 06:44:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:44:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:44:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:44:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:44:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:44:07,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317140919] [2023-11-29 06:44:07,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317140919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:07,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:44:07,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:44:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417879536] [2023-11-29 06:44:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:07,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:44:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:44:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:44:07,783 INFO L87 Difference]: Start difference. First operand 557 states and 893 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 06:44:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:28,479 INFO L93 Difference]: Finished difference Result 2401 states and 3994 transitions. [2023-11-29 06:44:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 06:44:28,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 70 [2023-11-29 06:44:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:28,493 INFO L225 Difference]: With dead ends: 2401 [2023-11-29 06:44:28,493 INFO L226 Difference]: Without dead ends: 1915 [2023-11-29 06:44:28,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=323, Invalid=1747, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 06:44:28,497 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 4707 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 7892 mSolverCounterSat, 1194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 9086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 7892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:28,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4784 Valid, 2676 Invalid, 9086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1194 Valid, 7892 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-11-29 06:44:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2023-11-29 06:44:28,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1451. [2023-11-29 06:44:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1135 states have (on average 1.649339207048458) internal successors, (1872), 1165 states have internal predecessors, (1872), 242 states have call successors, (242), 69 states have call predecessors, (242), 73 states have return successors, (259), 230 states have call predecessors, (259), 237 states have call successors, (259) [2023-11-29 06:44:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2373 transitions. [2023-11-29 06:44:28,882 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2373 transitions. Word has length 70 [2023-11-29 06:44:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:28,883 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 2373 transitions. [2023-11-29 06:44:28,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 06:44:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2373 transitions. [2023-11-29 06:44:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 06:44:28,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:28,890 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 06:44:28,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:44:28,890 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:28,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash -710553751, now seen corresponding path program 1 times [2023-11-29 06:44:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028655756] [2023-11-29 06:44:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:44:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:29,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:44:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:44:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:44:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 06:44:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 06:44:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:44:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:44:30,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:30,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028655756] [2023-11-29 06:44:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028655756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:44:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802756908] [2023-11-29 06:44:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:30,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:30,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:30,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:30,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:44:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:30,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:44:30,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:44:30,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:30,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802756908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:30,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:44:30,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 17 [2023-11-29 06:44:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149475996] [2023-11-29 06:44:30,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:30,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:44:30,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:30,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:44:30,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:30,855 INFO L87 Difference]: Start difference. First operand 1451 states and 2373 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:31,522 INFO L93 Difference]: Finished difference Result 3567 states and 5914 transitions. [2023-11-29 06:44:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:44:31,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2023-11-29 06:44:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:31,532 INFO L225 Difference]: With dead ends: 3567 [2023-11-29 06:44:31,533 INFO L226 Difference]: Without dead ends: 2187 [2023-11-29 06:44:31,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:31,537 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 862 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:31,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1761 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:44:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2023-11-29 06:44:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2185. [2023-11-29 06:44:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 1703 states have (on average 1.653552554315913) internal successors, (2816), 1749 states have internal predecessors, (2816), 370 states have call successors, (370), 103 states have call predecessors, (370), 111 states have return successors, (419), 359 states have call predecessors, (419), 365 states have call successors, (419) [2023-11-29 06:44:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 3605 transitions. [2023-11-29 06:44:32,058 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 3605 transitions. Word has length 121 [2023-11-29 06:44:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:32,059 INFO L495 AbstractCegarLoop]: Abstraction has 2185 states and 3605 transitions. [2023-11-29 06:44:32,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:32,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 3605 transitions. [2023-11-29 06:44:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 06:44:32,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:32,063 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 06:44:32,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:44:32,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:44:32,264 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:32,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:32,264 INFO L85 PathProgramCache]: Analyzing trace with hash -552607028, now seen corresponding path program 1 times [2023-11-29 06:44:32,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:32,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282661844] [2023-11-29 06:44:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:32,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:32,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:44:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:44:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:44:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:44:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 06:44:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 06:44:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:44:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:44:33,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:33,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282661844] [2023-11-29 06:44:33,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282661844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:44:33,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425493702] [2023-11-29 06:44:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:33,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:33,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:33,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:33,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:44:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:33,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:44:33,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:44:33,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:33,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425493702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:33,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:44:33,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 17 [2023-11-29 06:44:33,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963937492] [2023-11-29 06:44:33,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:33,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:44:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:44:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:33,807 INFO L87 Difference]: Start difference. First operand 2185 states and 3605 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:34,683 INFO L93 Difference]: Finished difference Result 5771 states and 9661 transitions. [2023-11-29 06:44:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:44:34,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 122 [2023-11-29 06:44:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:34,700 INFO L225 Difference]: With dead ends: 5771 [2023-11-29 06:44:34,700 INFO L226 Difference]: Without dead ends: 3657 [2023-11-29 06:44:34,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:34,707 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 861 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:34,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1718 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:44:34,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2023-11-29 06:44:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 3654. [2023-11-29 06:44:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 2840 states have (on average 1.6566901408450705) internal successors, (4705), 2918 states have internal predecessors, (4705), 626 states have call successors, (626), 171 states have call predecessors, (626), 187 states have return successors, (769), 617 states have call predecessors, (769), 621 states have call successors, (769) [2023-11-29 06:44:35,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 6100 transitions. [2023-11-29 06:44:35,688 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 6100 transitions. Word has length 122 [2023-11-29 06:44:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:35,688 INFO L495 AbstractCegarLoop]: Abstraction has 3654 states and 6100 transitions. [2023-11-29 06:44:35,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:35,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 6100 transitions. [2023-11-29 06:44:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 06:44:35,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:35,693 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 06:44:35,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:44:35,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:35,894 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:35,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:35,894 INFO L85 PathProgramCache]: Analyzing trace with hash 48777995, now seen corresponding path program 1 times [2023-11-29 06:44:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:35,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780274882] [2023-11-29 06:44:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:44:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:44:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:36,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:44:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:44:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 06:44:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 06:44:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:44:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:44:37,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:37,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780274882] [2023-11-29 06:44:37,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780274882] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:44:37,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675593952] [2023-11-29 06:44:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:37,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:37,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:37,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:37,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:44:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:37,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:44:37,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:44:37,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:37,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675593952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:37,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:44:37,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 17 [2023-11-29 06:44:37,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581824297] [2023-11-29 06:44:37,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:37,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:44:37,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:37,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:44:37,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:37,569 INFO L87 Difference]: Start difference. First operand 3654 states and 6100 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:39,438 INFO L93 Difference]: Finished difference Result 10180 states and 17299 transitions. [2023-11-29 06:44:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:44:39,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 123 [2023-11-29 06:44:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:39,475 INFO L225 Difference]: With dead ends: 10180 [2023-11-29 06:44:39,475 INFO L226 Difference]: Without dead ends: 6597 [2023-11-29 06:44:39,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:39,490 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 860 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:39,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1711 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:44:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6597 states. [2023-11-29 06:44:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6597 to 6593. [2023-11-29 06:44:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6593 states, 5115 states have (on average 1.6580645161290322) internal successors, (8481), 5257 states have internal predecessors, (8481), 1138 states have call successors, (1138), 307 states have call predecessors, (1138), 339 states have return successors, (1565), 1133 states have call predecessors, (1565), 1133 states have call successors, (1565) [2023-11-29 06:44:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6593 states to 6593 states and 11184 transitions. [2023-11-29 06:44:41,220 INFO L78 Accepts]: Start accepts. Automaton has 6593 states and 11184 transitions. Word has length 123 [2023-11-29 06:44:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:41,221 INFO L495 AbstractCegarLoop]: Abstraction has 6593 states and 11184 transitions. [2023-11-29 06:44:41,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 6593 states and 11184 transitions. [2023-11-29 06:44:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:44:41,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:41,229 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 06:44:41,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:44:41,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:41,430 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:41,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1511848430, now seen corresponding path program 1 times [2023-11-29 06:44:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:41,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844686993] [2023-11-29 06:44:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:41,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:44:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:41,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:44:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:44:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:44:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 06:44:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 06:44:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:44:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:44:42,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:42,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844686993] [2023-11-29 06:44:42,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844686993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:44:42,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213116174] [2023-11-29 06:44:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:42,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:42,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:42,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:42,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:44:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:43,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:44:43,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:44:43,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213116174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:43,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:44:43,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 17 [2023-11-29 06:44:43,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040272610] [2023-11-29 06:44:43,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:43,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:44:43,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:43,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:44:43,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:43,308 INFO L87 Difference]: Start difference. First operand 6593 states and 11184 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:46,302 INFO L93 Difference]: Finished difference Result 18999 states and 33056 transitions. [2023-11-29 06:44:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:44:46,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2023-11-29 06:44:46,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:46,363 INFO L225 Difference]: With dead ends: 18999 [2023-11-29 06:44:46,363 INFO L226 Difference]: Without dead ends: 12477 [2023-11-29 06:44:46,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:46,388 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 859 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:46,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1705 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:44:46,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2023-11-29 06:44:49,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 12472. [2023-11-29 06:44:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12472 states, 9666 states have (on average 1.6578729567556383) internal successors, (16025), 9936 states have internal predecessors, (16025), 2162 states have call successors, (2162), 579 states have call predecessors, (2162), 643 states have return successors, (3481), 2165 states have call predecessors, (3481), 2157 states have call successors, (3481) [2023-11-29 06:44:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12472 states to 12472 states and 21668 transitions. [2023-11-29 06:44:49,661 INFO L78 Accepts]: Start accepts. Automaton has 12472 states and 21668 transitions. Word has length 124 [2023-11-29 06:44:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:49,662 INFO L495 AbstractCegarLoop]: Abstraction has 12472 states and 21668 transitions. [2023-11-29 06:44:49,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12472 states and 21668 transitions. [2023-11-29 06:44:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 06:44:49,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:49,666 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-29 06:44:49,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:44:49,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:49,867 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:49,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:49,867 INFO L85 PathProgramCache]: Analyzing trace with hash -377604435, now seen corresponding path program 1 times [2023-11-29 06:44:49,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:49,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127830425] [2023-11-29 06:44:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:49,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:44:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:44:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:44:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:50,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:44:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:44:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:44:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 06:44:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 06:44:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:44:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:44:51,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127830425] [2023-11-29 06:44:51,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127830425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:44:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429177915] [2023-11-29 06:44:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:51,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:51,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:51,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:51,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:44:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:51,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:44:51,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:44:51,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:51,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429177915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:51,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:44:51,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 17 [2023-11-29 06:44:51,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857249078] [2023-11-29 06:44:51,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:51,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:44:51,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:51,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:44:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:51,380 INFO L87 Difference]: Start difference. First operand 12472 states and 21668 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:44:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:56,972 INFO L93 Difference]: Finished difference Result 36638 states and 66268 transitions. [2023-11-29 06:44:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:44:56,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 125 [2023-11-29 06:44:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:57,093 INFO L225 Difference]: With dead ends: 36638 [2023-11-29 06:44:57,093 INFO L226 Difference]: Without dead ends: 24229 [2023-11-29 06:44:57,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:44:57,138 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 857 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:57,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1702 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:44:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24229 states. [2023-11-29 06:45:03,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24229 to 24223. [2023-11-29 06:45:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24223 states, 18762 states have (on average 1.6560068223003943) internal successors, (31070), 19288 states have internal predecessors, (31070), 4210 states have call successors, (4210), 1123 states have call predecessors, (4210), 1250 states have return successors, (8452), 4228 states have call predecessors, (8452), 4205 states have call successors, (8452) [2023-11-29 06:45:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24223 states to 24223 states and 43732 transitions. [2023-11-29 06:45:03,354 INFO L78 Accepts]: Start accepts. Automaton has 24223 states and 43732 transitions. Word has length 125 [2023-11-29 06:45:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:45:03,354 INFO L495 AbstractCegarLoop]: Abstraction has 24223 states and 43732 transitions. [2023-11-29 06:45:03,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 06:45:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 24223 states and 43732 transitions. [2023-11-29 06:45:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-11-29 06:45:03,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:45:03,375 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:45:03,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 06:45:03,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 06:45:03,576 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:45:03,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:45:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1395348673, now seen corresponding path program 1 times [2023-11-29 06:45:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:45:03,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571039036] [2023-11-29 06:45:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:03,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:45:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:45:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:45:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:45:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:45:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:45:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:45:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:45:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 06:45:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 06:45:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:45:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:45:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 06:45:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:45:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 06:45:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:45:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:45:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 06:45:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:45:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 06:45:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 06:45:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 06:45:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 06:45:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:45:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 06:45:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 06:45:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 06:45:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:45:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:45:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 06:45:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 06:45:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 06:45:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 06:45:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 06:45:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-29 06:45:05,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:45:05,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571039036] [2023-11-29 06:45:05,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571039036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:45:05,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059132734] [2023-11-29 06:45:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:05,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:45:05,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:45:05,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:45:05,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc89787-acd1-4ba8-a7fc-fc2859079ddb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:45:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:05,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:45:05,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:45:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:45:05,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:45:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-11-29 06:45:06,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059132734] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:45:06,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:45:06,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7, 6] total 25 [2023-11-29 06:45:06,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186521371] [2023-11-29 06:45:06,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:45:06,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 06:45:06,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:45:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 06:45:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:45:06,570 INFO L87 Difference]: Start difference. First operand 24223 states and 43732 transitions. Second operand has 25 states, 24 states have (on average 10.75) internal successors, (258), 17 states have internal predecessors, (258), 10 states have call successors, (74), 13 states have call predecessors, (74), 12 states have return successors, (68), 11 states have call predecessors, (68), 10 states have call successors, (68) [2023-11-29 06:50:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:59,141 INFO L93 Difference]: Finished difference Result 568289 states and 3322690 transitions. [2023-11-29 06:50:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 301 states. [2023-11-29 06:50:59,142 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 10.75) internal successors, (258), 17 states have internal predecessors, (258), 10 states have call successors, (74), 13 states have call predecessors, (74), 12 states have return successors, (68), 11 states have call predecessors, (68), 10 states have call successors, (68) Word has length 290 [2023-11-29 06:50:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted.