./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ --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 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:38:59,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:38:59,257 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:38:59,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:38:59,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:38:59,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:38:59,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:38:59,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:38:59,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:38:59,322 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:38:59,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:38:59,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:38:59,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:38:59,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:38:59,327 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:38:59,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:38:59,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:38:59,329 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:38:59,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:38:59,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:38:59,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:38:59,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:38:59,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:38:59,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:38:59,332 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:38:59,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:38:59,333 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:38:59,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:38:59,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:38:59,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:38:59,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:38:59,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:38:59,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:38:59,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:38:59,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:38:59,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:38:59,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:38:59,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:38:59,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:38:59,339 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:38:59,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:38:59,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:38:59,340 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_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2023-11-23 22:38:59,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:38:59,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:38:59,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:38:59,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:38:59,696 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:38:59,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2023-11-23 22:39:02,894 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:39:03,268 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:39:03,268 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2023-11-23 22:39:03,304 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/data/2a0ee020e/d7fb0b0987104b8bb999fa9df34be490/FLAG2b842c25f [2023-11-23 22:39:03,500 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/data/2a0ee020e/d7fb0b0987104b8bb999fa9df34be490 [2023-11-23 22:39:03,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:39:03,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:39:03,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:03,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:39:03,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:39:03,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:39:03" (1/1) ... [2023-11-23 22:39:03,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511e3c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:03, skipping insertion in model container [2023-11-23 22:39:03,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:39:03" (1/1) ... [2023-11-23 22:39:03,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:39:04,372 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_63a77bbd-c984-441d-b256-697374f4e2da/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2023-11-23 22:39:04,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:04,427 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:39:04,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-23 22:39:04,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [408] [2023-11-23 22:39:04,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [423] [2023-11-23 22:39:04,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [789] [2023-11-23 22:39:04,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2329] [2023-11-23 22:39:04,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2447] [2023-11-23 22:39:04,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2482] [2023-11-23 22:39:04,452 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2669] [2023-11-23 22:39:04,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2678] [2023-11-23 22:39:04,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2769] [2023-11-23 22:39:04,618 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_63a77bbd-c984-441d-b256-697374f4e2da/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2023-11-23 22:39:04,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:04,678 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:39:04,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04 WrapperNode [2023-11-23 22:39:04,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:04,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:04,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:39:04,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:39:04,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,785 INFO L138 Inliner]: procedures = 92, calls = 346, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1090 [2023-11-23 22:39:04,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:04,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:39:04,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:39:04,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:39:04,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,823 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,860 INFO L189 HeapSplitter]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4] [2023-11-23 22:39:04,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:04,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:39:04,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:39:04,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:39:04,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:39:04,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (1/1) ... [2023-11-23 22:39:05,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:39:05,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:05,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:39:05,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63a77bbd-c984-441d-b256-697374f4e2da/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:39:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:39:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-23 22:39:05,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-23 22:39:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-23 22:39:05,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-23 22:39:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-23 22:39:05,080 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-23 22:39:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-23 22:39:05,080 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-23 22:39:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-23 22:39:05,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-23 22:39:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-23 22:39:05,081 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-23 22:39:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-23 22:39:05,082 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-23 22:39:05,083 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-23 22:39:05,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-23 22:39:05,084 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-23 22:39:05,084 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-23 22:39:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-23 22:39:05,085 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-23 22:39:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-23 22:39:05,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-23 22:39:05,085 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-23 22:39:05,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-23 22:39:05,086 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-23 22:39:05,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-23 22:39:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-23 22:39:05,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-23 22:39:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-23 22:39:05,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-23 22:39:05,087 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-23 22:39:05,087 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-23 22:39:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-23 22:39:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-23 22:39:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-23 22:39:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-23 22:39:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-23 22:39:05,088 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-23 22:39:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-23 22:39:05,089 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-23 22:39:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-23 22:39:05,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-23 22:39:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-23 22:39:05,089 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-23 22:39:05,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:39:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:39:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:39:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:39:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:39:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:39:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 22:39:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 22:39:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 22:39:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 22:39:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-23 22:39:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-23 22:39:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-23 22:39:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-23 22:39:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-23 22:39:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-23 22:39:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-23 22:39:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-23 22:39:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-23 22:39:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-23 22:39:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-23 22:39:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-23 22:39:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-23 22:39:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-23 22:39:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-23 22:39:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-23 22:39:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-23 22:39:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-23 22:39:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:39:05,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:39:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-23 22:39:05,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-23 22:39:05,365 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:39:05,368 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:39:06,834 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:39:06,921 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:39:06,921 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:39:06,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:06 BoogieIcfgContainer [2023-11-23 22:39:06,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:39:06,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:39:06,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:39:06,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:39:06,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:39:03" (1/3) ... [2023-11-23 22:39:06,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12be402a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:06, skipping insertion in model container [2023-11-23 22:39:06,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:04" (2/3) ... [2023-11-23 22:39:06,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12be402a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:06, skipping insertion in model container [2023-11-23 22:39:06,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:06" (3/3) ... [2023-11-23 22:39:06,932 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2023-11-23 22:39:06,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:39:06,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:39:07,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:39:07,074 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;@4e4544e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:39:07,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:39:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 567 states, 430 states have (on average 1.7023255813953488) internal successors, (732), 448 states have internal predecessors, (732), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-23 22:39:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 22:39:07,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:07,126 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:07,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:07,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash 529877195, now seen corresponding path program 1 times [2023-11-23 22:39:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:07,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087719940] [2023-11-23 22:39:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:08,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:39:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:39:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 22:39:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 22:39:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 22:39:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 22:39:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 22:39:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 22:39:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 22:39:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 22:39:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 22:39:09,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:09,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087719940] [2023-11-23 22:39:09,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087719940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:09,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:09,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 22:39:09,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491446620] [2023-11-23 22:39:09,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:09,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:39:09,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:09,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:39:09,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:39:09,184 INFO L87 Difference]: Start difference. First operand has 567 states, 430 states have (on average 1.7023255813953488) internal successors, (732), 448 states have internal predecessors, (732), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 22:39:19,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:19,708 INFO L93 Difference]: Finished difference Result 1472 states and 2571 transitions. [2023-11-23 22:39:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:39:19,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 101 [2023-11-23 22:39:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:19,751 INFO L225 Difference]: With dead ends: 1472 [2023-11-23 22:39:19,751 INFO L226 Difference]: Without dead ends: 902 [2023-11-23 22:39:19,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-23 22:39:19,769 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 2248 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 5455 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2361 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 6154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 5455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:19,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2361 Valid, 2973 Invalid, 6154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [699 Valid, 5455 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-23 22:39:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-23 22:39:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 573. [2023-11-23 22:39:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 436 states have (on average 1.688073394495413) internal successors, (736), 454 states have internal predecessors, (736), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2023-11-23 22:39:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 953 transitions. [2023-11-23 22:39:20,167 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 953 transitions. Word has length 101 [2023-11-23 22:39:20,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:20,168 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 953 transitions. [2023-11-23 22:39:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 22:39:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 953 transitions. [2023-11-23 22:39:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 22:39:20,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:20,180 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 22:39:20,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:39:20,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:20,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:20,181 INFO L85 PathProgramCache]: Analyzing trace with hash 737264536, now seen corresponding path program 1 times [2023-11-23 22:39:20,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:20,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619490911] [2023-11-23 22:39:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:39:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:39:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 22:39:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 22:39:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 22:39:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 22:39:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 22:39:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 22:39:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 22:39:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 22:39:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 22:39:21,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619490911] [2023-11-23 22:39:21,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619490911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:21,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:21,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 22:39:21,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92471928] [2023-11-23 22:39:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:39:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:39:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:39:21,185 INFO L87 Difference]: Start difference. First operand 573 states and 953 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 22:39:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:31,210 INFO L93 Difference]: Finished difference Result 1466 states and 2521 transitions. [2023-11-23 22:39:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 22:39:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 102 [2023-11-23 22:39:31,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:31,221 INFO L225 Difference]: With dead ends: 1466 [2023-11-23 22:39:31,221 INFO L226 Difference]: Without dead ends: 903 [2023-11-23 22:39:31,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-23 22:39:31,227 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 2227 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 5342 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 6060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 5342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:31,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2341 Valid, 2700 Invalid, 6060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [718 Valid, 5342 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-23 22:39:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-11-23 22:39:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 573. [2023-11-23 22:39:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 436 states have (on average 1.6857798165137614) internal successors, (735), 454 states have internal predecessors, (735), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2023-11-23 22:39:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 952 transitions. [2023-11-23 22:39:31,414 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 952 transitions. Word has length 102 [2023-11-23 22:39:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:31,417 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 952 transitions. [2023-11-23 22:39:31,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 22:39:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 952 transitions. [2023-11-23 22:39:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 22:39:31,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:31,423 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 22:39:31,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:39:31,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:31,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1684876880, now seen corresponding path program 1 times [2023-11-23 22:39:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:31,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685868916] [2023-11-23 22:39:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:31,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:39:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 22:39:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 22:39:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 22:39:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 22:39:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 22:39:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 22:39:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 22:39:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 22:39:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 22:39:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 22:39:32,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:32,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685868916] [2023-11-23 22:39:32,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685868916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:32,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:32,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:39:32,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130924001] [2023-11-23 22:39:32,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:32,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:32,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:32,173 INFO L87 Difference]: Start difference. First operand 573 states and 952 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 22:39:39,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:39,282 INFO L93 Difference]: Finished difference Result 1459 states and 2503 transitions. [2023-11-23 22:39:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:39:39,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 102 [2023-11-23 22:39:39,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:39,292 INFO L225 Difference]: With dead ends: 1459 [2023-11-23 22:39:39,292 INFO L226 Difference]: Without dead ends: 867 [2023-11-23 22:39:39,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:39:39,297 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 2129 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 2868 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 3564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:39,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2242 Valid, 1517 Invalid, 3564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [696 Valid, 2868 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-23 22:39:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-11-23 22:39:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 550. [2023-11-23 22:39:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6754807692307692) internal successors, (697), 432 states have internal predecessors, (697), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-23 22:39:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 910 transitions. [2023-11-23 22:39:39,499 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 910 transitions. Word has length 102 [2023-11-23 22:39:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:39,500 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 910 transitions. [2023-11-23 22:39:39,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 22:39:39,500 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 910 transitions. [2023-11-23 22:39:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 22:39:39,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:39,504 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 22:39:39,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:39:39,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:39,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:39,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1261917111, now seen corresponding path program 1 times [2023-11-23 22:39:39,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:39,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063108124] [2023-11-23 22:39:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:39,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:39,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:39:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:39:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:39:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 22:39:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 22:39:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 22:39:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 22:39:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 22:39:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:39:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 22:39:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 22:39:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 22:39:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 22:39:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063108124] [2023-11-23 22:39:40,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063108124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 22:39:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284920895] [2023-11-23 22:39:40,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:39:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:39:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:39:40,354 INFO L87 Difference]: Start difference. First operand 550 states and 910 transitions. Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 22:39:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:49,854 INFO L93 Difference]: Finished difference Result 1423 states and 2435 transitions. [2023-11-23 22:39:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:39:49,855 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 103 [2023-11-23 22:39:49,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:49,865 INFO L225 Difference]: With dead ends: 1423 [2023-11-23 22:39:49,866 INFO L226 Difference]: Without dead ends: 861 [2023-11-23 22:39:49,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-23 22:39:49,872 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 2161 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 5197 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 5891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 5197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:49,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2273 Valid, 2711 Invalid, 5891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [694 Valid, 5197 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-23 22:39:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-23 22:39:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 544. [2023-11-23 22:39:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 410 states have (on average 1.6682926829268292) internal successors, (684), 426 states have internal predecessors, (684), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-23 22:39:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 897 transitions. [2023-11-23 22:39:50,104 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 897 transitions. Word has length 103 [2023-11-23 22:39:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:50,105 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 897 transitions. [2023-11-23 22:39:50,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 22:39:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 897 transitions. [2023-11-23 22:39:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 22:39:50,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:50,111 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 22:39:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:39:50,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:39:50,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1129528224, now seen corresponding path program 1 times [2023-11-23 22:39:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:50,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487652051] [2023-11-23 22:39:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat