./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1 --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 c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:35:25,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:35:25,329 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:35:25,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:35:25,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:35:25,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:35:25,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:35:25,359 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:35:25,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:35:25,360 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:35:25,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:35:25,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:35:25,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:35:25,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:35:25,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:35:25,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:35:25,362 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:35:25,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:35:25,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:35:25,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:35:25,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:35:25,364 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1 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 -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2024-12-02 14:35:25,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:35:25,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:35:25,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:35:25,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:35:25,635 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:35:25,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2024-12-02 14:35:28,284 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/data/34004dec1/55a56ab116b1488d81c5b92c5c52e72a/FLAG839187c23 [2024-12-02 14:35:28,639 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:35:28,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2024-12-02 14:35:28,654 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/data/34004dec1/55a56ab116b1488d81c5b92c5c52e72a/FLAG839187c23 [2024-12-02 14:35:28,667 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/data/34004dec1/55a56ab116b1488d81c5b92c5c52e72a [2024-12-02 14:35:28,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:35:28,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:35:28,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:35:28,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:35:28,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:35:28,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:35:28" (1/1) ... [2024-12-02 14:35:28,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d668a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:28, skipping insertion in model container [2024-12-02 14:35:28,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:35:28" (1/1) ... [2024-12-02 14:35:28,719 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:35:28,881 WARN L250 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_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2024-12-02 14:35:29,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:35:29,142 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:35:29,149 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-12-02 14:35:29,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [67] [2024-12-02 14:35:29,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [259] [2024-12-02 14:35:29,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [268] [2024-12-02 14:35:29,151 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [366] [2024-12-02 14:35:29,151 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1033] [2024-12-02 14:35:29,151 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1399] [2024-12-02 14:35:29,151 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2844] [2024-12-02 14:35:29,151 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3195] [2024-12-02 14:35:29,151 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3313] [2024-12-02 14:35:29,162 WARN L250 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_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2024-12-02 14:35:29,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:35:29,271 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:35:29,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29 WrapperNode [2024-12-02 14:35:29,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:35:29,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:35:29,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:35:29,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:35:29,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,333 INFO L138 Inliner]: procedures = 88, calls = 338, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 796 [2024-12-02 14:35:29,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:35:29,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:35:29,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:35:29,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:35:29,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,375 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 14:35:29,375 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,375 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,394 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:35:29,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:35:29,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:35:29,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:35:29,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (1/1) ... [2024-12-02 14:35:29,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:35:29,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:29,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:35:29,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:35:29,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 14:35:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 14:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 14:35:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 14:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 14:35:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 14:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 14:35:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 14:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 14:35:29,506 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 14:35:29,506 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 14:35:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 14:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 14:35:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 14:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 14:35:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 14:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 14:35:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 14:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 14:35:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 14:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 14:35:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 14:35:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 14:35:29,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 14:35:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 14:35:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 14:35:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 14:35:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 14:35:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 14:35:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 14:35:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 14:35:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 14:35:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 14:35:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 14:35:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 14:35:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 14:35:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 14:35:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 14:35:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 14:35:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 14:35:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 14:35:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 14:35:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 14:35:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:35:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:35:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 14:35:29,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 14:35:29,679 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:35:29,681 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:35:30,816 INFO L? ?]: Removed 435 outVars from TransFormulas that were not future-live. [2024-12-02 14:35:30,816 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:35:30,837 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:35:30,837 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:35:30,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:35:30 BoogieIcfgContainer [2024-12-02 14:35:30,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:35:30,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:35:30,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:35:30,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:35:30,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:35:28" (1/3) ... [2024-12-02 14:35:30,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410de4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:35:30, skipping insertion in model container [2024-12-02 14:35:30,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:29" (2/3) ... [2024-12-02 14:35:30,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410de4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:35:30, skipping insertion in model container [2024-12-02 14:35:30,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:35:30" (3/3) ... [2024-12-02 14:35:30,846 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2024-12-02 14:35:30,862 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:35:30,864 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product17.cil.c that has 25 procedures, 560 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:35:30,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:35:30,946 INFO L333 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, 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;@5264b542, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:35:30,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:35:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 434 states have (on average 1.6889400921658986) internal successors, (733), 452 states have internal predecessors, (733), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 14:35:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 14:35:30,972 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:30,973 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:30,974 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:30,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:30,979 INFO L85 PathProgramCache]: Analyzing trace with hash 237000201, now seen corresponding path program 1 times [2024-12-02 14:35:30,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:30,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475789257] [2024-12-02 14:35:30,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:30,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:31,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:31,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475789257] [2024-12-02 14:35:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475789257] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:31,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:31,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:35:31,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364278658] [2024-12-02 14:35:31,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:31,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:35:31,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:31,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:35:31,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:31,740 INFO L87 Difference]: Start difference. First operand has 560 states, 434 states have (on average 1.6889400921658986) internal successors, (733), 452 states have internal predecessors, (733), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:32,016 INFO L93 Difference]: Finished difference Result 1117 states and 1878 transitions. [2024-12-02 14:35:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:35:32,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2024-12-02 14:35:32,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:32,035 INFO L225 Difference]: With dead ends: 1117 [2024-12-02 14:35:32,035 INFO L226 Difference]: Without dead ends: 565 [2024-12-02 14:35:32,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:35:32,047 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 91 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5405 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:32,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5405 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-12-02 14:35:32,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2024-12-02 14:35:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 437 states have (on average 1.6796338672768878) internal successors, (734), 455 states have internal predecessors, (734), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2024-12-02 14:35:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 935 transitions. [2024-12-02 14:35:32,148 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 935 transitions. Word has length 85 [2024-12-02 14:35:32,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:32,149 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 935 transitions. [2024-12-02 14:35:32,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:32,149 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 935 transitions. [2024-12-02 14:35:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 14:35:32,156 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:32,156 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:32,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:35:32,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:32,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1450194865, now seen corresponding path program 1 times [2024-12-02 14:35:32,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:32,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924707034] [2024-12-02 14:35:32,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:32,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:32,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:32,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924707034] [2024-12-02 14:35:32,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924707034] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:32,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:32,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:35:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419295544] [2024-12-02 14:35:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:32,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:35:32,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:32,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:35:32,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:32,594 INFO L87 Difference]: Start difference. First operand 563 states and 935 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:32,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:32,761 INFO L93 Difference]: Finished difference Result 1121 states and 1873 transitions. [2024-12-02 14:35:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:35:32,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2024-12-02 14:35:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:32,768 INFO L225 Difference]: With dead ends: 1121 [2024-12-02 14:35:32,768 INFO L226 Difference]: Without dead ends: 574 [2024-12-02 14:35:32,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:35:32,774 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 90 mSDsluCounter, 4489 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:32,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5406 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-12-02 14:35:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 563. [2024-12-02 14:35:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 437 states have (on average 1.6796338672768878) internal successors, (734), 455 states have internal predecessors, (734), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2024-12-02 14:35:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 935 transitions. [2024-12-02 14:35:32,820 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 935 transitions. Word has length 86 [2024-12-02 14:35:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:32,820 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 935 transitions. [2024-12-02 14:35:32,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 935 transitions. [2024-12-02 14:35:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 14:35:32,824 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:32,824 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:32,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:35:32,825 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:32,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2025772722, now seen corresponding path program 1 times [2024-12-02 14:35:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:32,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32965826] [2024-12-02 14:35:32,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:33,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:33,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32965826] [2024-12-02 14:35:33,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32965826] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:33,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:33,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:33,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267754394] [2024-12-02 14:35:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:33,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:33,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:33,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:33,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:33,027 INFO L87 Difference]: Start difference. First operand 563 states and 935 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:33,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:33,106 INFO L93 Difference]: Finished difference Result 1108 states and 1851 transitions. [2024-12-02 14:35:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:35:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-12-02 14:35:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:33,111 INFO L225 Difference]: With dead ends: 1108 [2024-12-02 14:35:33,112 INFO L226 Difference]: Without dead ends: 533 [2024-12-02 14:35:33,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:35:33,116 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 14 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:33,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2710 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:33,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-12-02 14:35:33,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-12-02 14:35:33,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 410 states have (on average 1.6634146341463414) internal successors, (682), 426 states have internal predecessors, (682), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 14:35:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 879 transitions. [2024-12-02 14:35:33,150 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 879 transitions. Word has length 86 [2024-12-02 14:35:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:33,150 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 879 transitions. [2024-12-02 14:35:33,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 879 transitions. [2024-12-02 14:35:33,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 14:35:33,153 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:33,154 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:33,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:35:33,154 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:33,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash -710972947, now seen corresponding path program 1 times [2024-12-02 14:35:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:33,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060900523] [2024-12-02 14:35:33,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:33,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:33,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060900523] [2024-12-02 14:35:33,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060900523] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:33,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:33,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:35:33,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983152569] [2024-12-02 14:35:33,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:33,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:35:33,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:33,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:35:33,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:33,469 INFO L87 Difference]: Start difference. First operand 533 states and 879 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:33,588 INFO L93 Difference]: Finished difference Result 1059 states and 1757 transitions. [2024-12-02 14:35:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:35:33,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2024-12-02 14:35:33,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:33,593 INFO L225 Difference]: With dead ends: 1059 [2024-12-02 14:35:33,593 INFO L226 Difference]: Without dead ends: 527 [2024-12-02 14:35:33,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:35:33,597 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 63 mSDsluCounter, 4287 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5156 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:33,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5156 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:33,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-12-02 14:35:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2024-12-02 14:35:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 404 states have (on average 1.6559405940594059) internal successors, (669), 420 states have internal predecessors, (669), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 14:35:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 866 transitions. [2024-12-02 14:35:33,624 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 866 transitions. Word has length 87 [2024-12-02 14:35:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:33,624 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 866 transitions. [2024-12-02 14:35:33,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 866 transitions. [2024-12-02 14:35:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 14:35:33,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:33,627 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:33,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:35:33,627 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:33,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2062235853, now seen corresponding path program 1 times [2024-12-02 14:35:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:33,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756804596] [2024-12-02 14:35:33,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:33,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:33,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:33,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756804596] [2024-12-02 14:35:33,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756804596] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:33,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:33,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:35:33,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178971408] [2024-12-02 14:35:33,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:33,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:35:33,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:33,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:35:33,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:33,863 INFO L87 Difference]: Start difference. First operand 527 states and 866 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:33,959 INFO L93 Difference]: Finished difference Result 1047 states and 1731 transitions. [2024-12-02 14:35:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:35:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2024-12-02 14:35:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:33,964 INFO L225 Difference]: With dead ends: 1047 [2024-12-02 14:35:33,964 INFO L226 Difference]: Without dead ends: 521 [2024-12-02 14:35:33,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:35:33,968 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 49 mSDsluCounter, 4239 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:33,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5096 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:33,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-12-02 14:35:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-12-02 14:35:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.6482412060301508) internal successors, (656), 414 states have internal predecessors, (656), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 14:35:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 853 transitions. [2024-12-02 14:35:33,994 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 853 transitions. Word has length 88 [2024-12-02 14:35:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:33,995 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 853 transitions. [2024-12-02 14:35:33,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 853 transitions. [2024-12-02 14:35:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 14:35:33,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:33,998 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:33,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:35:33,998 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:33,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1703884748, now seen corresponding path program 1 times [2024-12-02 14:35:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:33,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418292746] [2024-12-02 14:35:33,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:33,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:34,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418292746] [2024-12-02 14:35:34,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418292746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:34,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:34,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:35:34,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896629445] [2024-12-02 14:35:34,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:34,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:35:34,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:34,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:35:34,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:34,198 INFO L87 Difference]: Start difference. First operand 521 states and 853 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:34,286 INFO L93 Difference]: Finished difference Result 1035 states and 1705 transitions. [2024-12-02 14:35:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:35:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2024-12-02 14:35:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:34,291 INFO L225 Difference]: With dead ends: 1035 [2024-12-02 14:35:34,291 INFO L226 Difference]: Without dead ends: 521 [2024-12-02 14:35:34,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:35:34,295 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 24 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5048 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:34,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5048 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-12-02 14:35:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-12-02 14:35:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.6457286432160805) internal successors, (655), 414 states have internal predecessors, (655), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 14:35:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 852 transitions. [2024-12-02 14:35:34,320 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 852 transitions. Word has length 88 [2024-12-02 14:35:34,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:34,321 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 852 transitions. [2024-12-02 14:35:34,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 852 transitions. [2024-12-02 14:35:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 14:35:34,324 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:34,324 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:34,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:35:34,324 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:34,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash 500948433, now seen corresponding path program 1 times [2024-12-02 14:35:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:34,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316412667] [2024-12-02 14:35:34,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:34,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:34,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:34,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316412667] [2024-12-02 14:35:34,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316412667] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:34,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:34,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:34,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453273340] [2024-12-02 14:35:34,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:34,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:34,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:34,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:34,462 INFO L87 Difference]: Start difference. First operand 521 states and 852 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:34,522 INFO L93 Difference]: Finished difference Result 1026 states and 1690 transitions. [2024-12-02 14:35:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:35:34,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-12-02 14:35:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:34,527 INFO L225 Difference]: With dead ends: 1026 [2024-12-02 14:35:34,528 INFO L226 Difference]: Without dead ends: 521 [2024-12-02 14:35:34,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:34,545 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 15 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:34,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2496 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-12-02 14:35:34,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-12-02 14:35:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.64321608040201) internal successors, (654), 414 states have internal predecessors, (654), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 14:35:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 851 transitions. [2024-12-02 14:35:34,571 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 851 transitions. Word has length 89 [2024-12-02 14:35:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:34,571 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 851 transitions. [2024-12-02 14:35:34,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 851 transitions. [2024-12-02 14:35:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 14:35:34,574 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:34,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:34,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:35:34,574 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:34,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1636821971, now seen corresponding path program 1 times [2024-12-02 14:35:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:34,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544781492] [2024-12-02 14:35:34,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:34,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544781492] [2024-12-02 14:35:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544781492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:34,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:34,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494247002] [2024-12-02 14:35:34,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:34,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:34,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:34,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:34,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:34,698 INFO L87 Difference]: Start difference. First operand 521 states and 851 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:34,756 INFO L93 Difference]: Finished difference Result 1026 states and 1688 transitions. [2024-12-02 14:35:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:35:34,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-12-02 14:35:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:34,761 INFO L225 Difference]: With dead ends: 1026 [2024-12-02 14:35:34,762 INFO L226 Difference]: Without dead ends: 521 [2024-12-02 14:35:34,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:34,765 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 14 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:34,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2498 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-12-02 14:35:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-12-02 14:35:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.6407035175879396) internal successors, (653), 414 states have internal predecessors, (653), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 14:35:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 850 transitions. [2024-12-02 14:35:34,790 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 850 transitions. Word has length 90 [2024-12-02 14:35:34,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:34,790 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 850 transitions. [2024-12-02 14:35:34,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 850 transitions. [2024-12-02 14:35:34,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 14:35:34,793 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:34,794 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:34,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:35:34,794 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:34,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:34,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1346489110, now seen corresponding path program 1 times [2024-12-02 14:35:34,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:34,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080743546] [2024-12-02 14:35:34,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:34,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:34,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:34,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080743546] [2024-12-02 14:35:34,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080743546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:34,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:34,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290693954] [2024-12-02 14:35:34,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:34,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:34,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:34,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:34,924 INFO L87 Difference]: Start difference. First operand 521 states and 850 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:34,980 INFO L93 Difference]: Finished difference Result 1026 states and 1686 transitions. [2024-12-02 14:35:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:35:34,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-12-02 14:35:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:34,985 INFO L225 Difference]: With dead ends: 1026 [2024-12-02 14:35:34,985 INFO L226 Difference]: Without dead ends: 521 [2024-12-02 14:35:34,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:34,989 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 13 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:34,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2500 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-12-02 14:35:35,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-12-02 14:35:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.6381909547738693) internal successors, (652), 414 states have internal predecessors, (652), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 14:35:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 849 transitions. [2024-12-02 14:35:35,016 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 849 transitions. Word has length 91 [2024-12-02 14:35:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:35,016 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 849 transitions. [2024-12-02 14:35:35,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 849 transitions. [2024-12-02 14:35:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 14:35:35,019 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:35,020 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:35,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:35:35,020 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:35,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash -206569160, now seen corresponding path program 1 times [2024-12-02 14:35:35,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:35,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057978652] [2024-12-02 14:35:35,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:35,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:35,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:35,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057978652] [2024-12-02 14:35:35,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057978652] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:35,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:35,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:35,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167475980] [2024-12-02 14:35:35,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:35,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:35,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:35,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:35,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:35,154 INFO L87 Difference]: Start difference. First operand 521 states and 849 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:35,204 INFO L93 Difference]: Finished difference Result 1026 states and 1684 transitions. [2024-12-02 14:35:35,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:35:35,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2024-12-02 14:35:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:35,209 INFO L225 Difference]: With dead ends: 1026 [2024-12-02 14:35:35,209 INFO L226 Difference]: Without dead ends: 521 [2024-12-02 14:35:35,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:35,213 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 12 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:35,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2502 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-12-02 14:35:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-12-02 14:35:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 398 states have (on average 1.635678391959799) internal successors, (651), 414 states have internal predecessors, (651), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 14:35:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 848 transitions. [2024-12-02 14:35:35,237 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 848 transitions. Word has length 92 [2024-12-02 14:35:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:35,237 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 848 transitions. [2024-12-02 14:35:35,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:35:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 848 transitions. [2024-12-02 14:35:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 14:35:35,240 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:35,240 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:35,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:35:35,241 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:35,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2045557851, now seen corresponding path program 1 times [2024-12-02 14:35:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:35,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266305815] [2024-12-02 14:35:35,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:35,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:35:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266305815] [2024-12-02 14:35:35,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266305815] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:35:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661614473] [2024-12-02 14:35:35,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:35,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:35,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:35,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:35,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:35:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:35,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:35:35,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:35:35,972 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:35,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661614473] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:35,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:35:35,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:35:35,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422564774] [2024-12-02 14:35:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:35,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:35:35,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:35,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:35:35,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:35,973 INFO L87 Difference]: Start difference. First operand 521 states and 848 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:36,041 INFO L93 Difference]: Finished difference Result 1475 states and 2434 transitions. [2024-12-02 14:35:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:35:36,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-12-02 14:35:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:36,048 INFO L225 Difference]: With dead ends: 1475 [2024-12-02 14:35:36,048 INFO L226 Difference]: Without dead ends: 972 [2024-12-02 14:35:36,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:36,051 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 791 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:36,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1602 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2024-12-02 14:35:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 957. [2024-12-02 14:35:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 738 states have (on average 1.6504065040650406) internal successors, (1218), 769 states have internal predecessors, (1218), 176 states have call successors, (176), 43 states have call predecessors, (176), 42 states have return successors, (178), 170 states have call predecessors, (178), 173 states have call successors, (178) [2024-12-02 14:35:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1572 transitions. [2024-12-02 14:35:36,086 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1572 transitions. Word has length 93 [2024-12-02 14:35:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:36,086 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1572 transitions. [2024-12-02 14:35:36,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1572 transitions. [2024-12-02 14:35:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 14:35:36,090 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:36,090 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:36,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:35:36,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:36,290 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:36,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:36,291 INFO L85 PathProgramCache]: Analyzing trace with hash 427751864, now seen corresponding path program 1 times [2024-12-02 14:35:36,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:36,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072893543] [2024-12-02 14:35:36,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:36,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:35:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072893543] [2024-12-02 14:35:36,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072893543] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:35:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952327435] [2024-12-02 14:35:36,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:36,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:36,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:36,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:36,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:35:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:36,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:35:36,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:35:36,946 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:36,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952327435] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:36,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:35:36,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:35:36,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183821550] [2024-12-02 14:35:36,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:36,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:35:36,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:36,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:35:36,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:36,948 INFO L87 Difference]: Start difference. First operand 957 states and 1572 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:37,032 INFO L93 Difference]: Finished difference Result 2347 states and 3884 transitions. [2024-12-02 14:35:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:35:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2024-12-02 14:35:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:37,039 INFO L225 Difference]: With dead ends: 2347 [2024-12-02 14:35:37,039 INFO L226 Difference]: Without dead ends: 1408 [2024-12-02 14:35:37,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:37,042 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 789 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:37,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1664 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2024-12-02 14:35:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1360. [2024-12-02 14:35:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1051 states have (on average 1.6641294005708849) internal successors, (1749), 1097 states have internal predecessors, (1749), 249 states have call successors, (249), 59 states have call predecessors, (249), 59 states have return successors, (256), 242 states have call predecessors, (256), 246 states have call successors, (256) [2024-12-02 14:35:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2254 transitions. [2024-12-02 14:35:37,087 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2254 transitions. Word has length 94 [2024-12-02 14:35:37,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:37,087 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 2254 transitions. [2024-12-02 14:35:37,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:35:37,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2254 transitions. [2024-12-02 14:35:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 14:35:37,091 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:37,091 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:37,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:35:37,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:37,291 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:37,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:37,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1673942583, now seen corresponding path program 1 times [2024-12-02 14:35:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88482827] [2024-12-02 14:35:37,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:37,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:37,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:37,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88482827] [2024-12-02 14:35:37,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88482827] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:37,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:37,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:35:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558615157] [2024-12-02 14:35:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:37,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:35:37,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:37,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:35:37,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:35:37,483 INFO L87 Difference]: Start difference. First operand 1360 states and 2254 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 14:35:38,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:38,102 INFO L93 Difference]: Finished difference Result 4016 states and 6763 transitions. [2024-12-02 14:35:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:35:38,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2024-12-02 14:35:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:38,118 INFO L225 Difference]: With dead ends: 4016 [2024-12-02 14:35:38,118 INFO L226 Difference]: Without dead ends: 2674 [2024-12-02 14:35:38,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:35:38,126 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 838 mSDsluCounter, 3428 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:38,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 4379 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:35:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2024-12-02 14:35:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2627. [2024-12-02 14:35:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2035 states have (on average 1.6683046683046683) internal successors, (3395), 2123 states have internal predecessors, (3395), 477 states have call successors, (477), 112 states have call predecessors, (477), 114 states have return successors, (553), 469 states have call predecessors, (553), 473 states have call successors, (553) [2024-12-02 14:35:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4425 transitions. [2024-12-02 14:35:38,242 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4425 transitions. Word has length 96 [2024-12-02 14:35:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:38,242 INFO L471 AbstractCegarLoop]: Abstraction has 2627 states and 4425 transitions. [2024-12-02 14:35:38,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 14:35:38,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4425 transitions. [2024-12-02 14:35:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 14:35:38,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:38,246 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:38,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:35:38,246 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:38,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1374678114, now seen corresponding path program 1 times [2024-12-02 14:35:38,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:38,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715723038] [2024-12-02 14:35:38,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:38,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:35:38,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715723038] [2024-12-02 14:35:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715723038] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:35:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432472559] [2024-12-02 14:35:38,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:38,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:38,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:38,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:38,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:35:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:38,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:35:38,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:35:38,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432472559] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:38,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:35:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:35:38,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717426265] [2024-12-02 14:35:38,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:38,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:35:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:38,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:35:38,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:38,841 INFO L87 Difference]: Start difference. First operand 2627 states and 4425 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 14:35:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:39,085 INFO L93 Difference]: Finished difference Result 7813 states and 13367 transitions. [2024-12-02 14:35:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:35:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2024-12-02 14:35:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:39,132 INFO L225 Difference]: With dead ends: 7813 [2024-12-02 14:35:39,132 INFO L226 Difference]: Without dead ends: 5205 [2024-12-02 14:35:39,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:39,149 INFO L435 NwaCegarLoop]: 1638 mSDtfsCounter, 831 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:39,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 2465 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2024-12-02 14:35:39,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 5138. [2024-12-02 14:35:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5138 states, 3994 states have (on average 1.6732598898347522) internal successors, (6683), 4162 states have internal predecessors, (6683), 920 states have call successors, (920), 212 states have call predecessors, (920), 223 states have return successors, (1151), 919 states have call predecessors, (1151), 914 states have call successors, (1151) [2024-12-02 14:35:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 8754 transitions. [2024-12-02 14:35:39,536 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 8754 transitions. Word has length 97 [2024-12-02 14:35:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:39,536 INFO L471 AbstractCegarLoop]: Abstraction has 5138 states and 8754 transitions. [2024-12-02 14:35:39,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 14:35:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 8754 transitions. [2024-12-02 14:35:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 14:35:39,544 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:39,544 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:39,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:35:39,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:39,744 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:39,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash -363560864, now seen corresponding path program 1 times [2024-12-02 14:35:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:39,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887466546] [2024-12-02 14:35:39,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:39,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:35:39,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:39,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887466546] [2024-12-02 14:35:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887466546] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:35:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482516364] [2024-12-02 14:35:39,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:39,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:39,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:39,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:39,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:35:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:40,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:35:40,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:35:40,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:40,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482516364] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:40,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:35:40,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:35:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843807891] [2024-12-02 14:35:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:40,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:35:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:40,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:35:40,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:40,445 INFO L87 Difference]: Start difference. First operand 5138 states and 8754 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 14:35:40,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:40,928 INFO L93 Difference]: Finished difference Result 14858 states and 25689 transitions. [2024-12-02 14:35:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:35:40,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2024-12-02 14:35:40,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:41,008 INFO L225 Difference]: With dead ends: 14858 [2024-12-02 14:35:41,008 INFO L226 Difference]: Without dead ends: 9739 [2024-12-02 14:35:41,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:41,045 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 701 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:41,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1650 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2024-12-02 14:35:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 9702. [2024-12-02 14:35:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9702 states, 7522 states have (on average 1.6390587609678278) internal successors, (12329), 7850 states have internal predecessors, (12329), 1744 states have call successors, (1744), 418 states have call predecessors, (1744), 435 states have return successors, (2296), 1739 states have call predecessors, (2296), 1734 states have call successors, (2296) [2024-12-02 14:35:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9702 states to 9702 states and 16369 transitions. [2024-12-02 14:35:41,602 INFO L78 Accepts]: Start accepts. Automaton has 9702 states and 16369 transitions. Word has length 97 [2024-12-02 14:35:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:41,602 INFO L471 AbstractCegarLoop]: Abstraction has 9702 states and 16369 transitions. [2024-12-02 14:35:41,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 14:35:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 9702 states and 16369 transitions. [2024-12-02 14:35:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 14:35:41,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:41,607 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:41,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:35:41,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:41,808 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:41,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1357720859, now seen corresponding path program 1 times [2024-12-02 14:35:41,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:41,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12940648] [2024-12-02 14:35:41,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:41,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:35:42,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:42,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12940648] [2024-12-02 14:35:42,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12940648] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:35:42,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329175921] [2024-12-02 14:35:42,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:42,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:42,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:42,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:42,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:35:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:42,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:35:42,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:35:42,479 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:42,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329175921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:42,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:35:42,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-12-02 14:35:42,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086299742] [2024-12-02 14:35:42,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:42,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:35:42,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:42,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:35:42,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:35:42,480 INFO L87 Difference]: Start difference. First operand 9702 states and 16369 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:35:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:43,100 INFO L93 Difference]: Finished difference Result 18307 states and 30982 transitions. [2024-12-02 14:35:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:35:43,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2024-12-02 14:35:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:43,163 INFO L225 Difference]: With dead ends: 18307 [2024-12-02 14:35:43,163 INFO L226 Difference]: Without dead ends: 8623 [2024-12-02 14:35:43,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:35:43,218 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 710 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3427 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:43,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 3427 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:35:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8623 states. [2024-12-02 14:35:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8623 to 8607. [2024-12-02 14:35:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8607 states, 6695 states have (on average 1.626437640029873) internal successors, (10889), 6970 states have internal predecessors, (10889), 1518 states have call successors, (1518), 378 states have call predecessors, (1518), 393 states have return successors, (1978), 1514 states have call predecessors, (1978), 1508 states have call successors, (1978) [2024-12-02 14:35:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8607 states to 8607 states and 14385 transitions. [2024-12-02 14:35:43,734 INFO L78 Accepts]: Start accepts. Automaton has 8607 states and 14385 transitions. Word has length 102 [2024-12-02 14:35:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:43,735 INFO L471 AbstractCegarLoop]: Abstraction has 8607 states and 14385 transitions. [2024-12-02 14:35:43,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:35:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 8607 states and 14385 transitions. [2024-12-02 14:35:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 14:35:43,740 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:43,740 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:43,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:35:43,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:43,941 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:43,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1708031206, now seen corresponding path program 1 times [2024-12-02 14:35:43,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:43,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881292401] [2024-12-02 14:35:43,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:43,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:35:44,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881292401] [2024-12-02 14:35:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881292401] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:44,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:44,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:44,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161829535] [2024-12-02 14:35:44,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:44,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:44,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:44,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:44,087 INFO L87 Difference]: Start difference. First operand 8607 states and 14385 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:35:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:44,570 INFO L93 Difference]: Finished difference Result 17244 states and 29165 transitions. [2024-12-02 14:35:44,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:35:44,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-12-02 14:35:44,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:44,616 INFO L225 Difference]: With dead ends: 17244 [2024-12-02 14:35:44,616 INFO L226 Difference]: Without dead ends: 8655 [2024-12-02 14:35:44,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:35:44,655 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 12 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:44,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2468 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8655 states. [2024-12-02 14:35:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8655 to 8623. [2024-12-02 14:35:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8623 states, 6707 states have (on average 1.6247204413299539) internal successors, (10897), 6982 states have internal predecessors, (10897), 1518 states have call successors, (1518), 386 states have call predecessors, (1518), 397 states have return successors, (1952), 1510 states have call predecessors, (1952), 1508 states have call successors, (1952) [2024-12-02 14:35:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8623 states to 8623 states and 14367 transitions. [2024-12-02 14:35:44,986 INFO L78 Accepts]: Start accepts. Automaton has 8623 states and 14367 transitions. Word has length 102 [2024-12-02 14:35:44,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:44,986 INFO L471 AbstractCegarLoop]: Abstraction has 8623 states and 14367 transitions. [2024-12-02 14:35:44,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 14:35:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 8623 states and 14367 transitions. [2024-12-02 14:35:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:35:44,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:44,990 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:35:44,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:35:44,990 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:44,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash 931550567, now seen corresponding path program 1 times [2024-12-02 14:35:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477961613] [2024-12-02 14:35:44,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:44,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:35:45,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:45,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477961613] [2024-12-02 14:35:45,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477961613] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:45,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:45,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:35:45,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097155458] [2024-12-02 14:35:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:45,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:35:45,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:45,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:35:45,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:35:45,125 INFO L87 Difference]: Start difference. First operand 8623 states and 14367 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:35:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:46,036 INFO L93 Difference]: Finished difference Result 25815 states and 44199 transitions. [2024-12-02 14:35:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:35:46,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2024-12-02 14:35:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:46,123 INFO L225 Difference]: With dead ends: 25815 [2024-12-02 14:35:46,123 INFO L226 Difference]: Without dead ends: 17210 [2024-12-02 14:35:46,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:35:46,164 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 832 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 4359 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:46,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 4359 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:35:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17210 states. [2024-12-02 14:35:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17210 to 17109. [2024-12-02 14:35:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17109 states, 13320 states have (on average 1.6211711711711712) internal successors, (21594), 13861 states have internal predecessors, (21594), 2991 states have call successors, (2991), 766 states have call predecessors, (2991), 797 states have return successors, (4505), 2993 states have call predecessors, (4505), 2973 states have call successors, (4505) [2024-12-02 14:35:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17109 states to 17109 states and 29090 transitions. [2024-12-02 14:35:46,770 INFO L78 Accepts]: Start accepts. Automaton has 17109 states and 29090 transitions. Word has length 110 [2024-12-02 14:35:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:46,770 INFO L471 AbstractCegarLoop]: Abstraction has 17109 states and 29090 transitions. [2024-12-02 14:35:46,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 14:35:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 17109 states and 29090 transitions. [2024-12-02 14:35:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 14:35:46,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:46,774 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:35:46,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:35:46,774 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:46,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:46,774 INFO L85 PathProgramCache]: Analyzing trace with hash -811139685, now seen corresponding path program 1 times [2024-12-02 14:35:46,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:46,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870501154] [2024-12-02 14:35:46,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:46,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:35:46,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870501154] [2024-12-02 14:35:46,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870501154] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:46,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:46,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:46,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250282384] [2024-12-02 14:35:46,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:46,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:46,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:46,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:46,851 INFO L87 Difference]: Start difference. First operand 17109 states and 29090 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:35:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:47,866 INFO L93 Difference]: Finished difference Result 34344 states and 59395 transitions. [2024-12-02 14:35:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:35:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2024-12-02 14:35:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:48,028 INFO L225 Difference]: With dead ends: 34344 [2024-12-02 14:35:48,029 INFO L226 Difference]: Without dead ends: 17253 [2024-12-02 14:35:48,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:35:48,207 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 12 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:48,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2462 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17253 states. [2024-12-02 14:35:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17253 to 17189. [2024-12-02 14:35:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17189 states, 13392 states have (on average 1.6184289127837514) internal successors, (21674), 13917 states have internal predecessors, (21674), 2991 states have call successors, (2991), 798 states have call predecessors, (2991), 805 states have return successors, (4465), 2985 states have call predecessors, (4465), 2973 states have call successors, (4465) [2024-12-02 14:35:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17189 states to 17189 states and 29130 transitions. [2024-12-02 14:35:49,206 INFO L78 Accepts]: Start accepts. Automaton has 17189 states and 29130 transitions. Word has length 111 [2024-12-02 14:35:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:49,206 INFO L471 AbstractCegarLoop]: Abstraction has 17189 states and 29130 transitions. [2024-12-02 14:35:49,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 14:35:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 17189 states and 29130 transitions. [2024-12-02 14:35:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 14:35:49,211 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:49,212 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-12-02 14:35:49,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:35:49,212 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:49,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash -247822328, now seen corresponding path program 1 times [2024-12-02 14:35:49,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:49,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587906498] [2024-12-02 14:35:49,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:49,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:35:49,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:49,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587906498] [2024-12-02 14:35:49,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587906498] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:49,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:49,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:35:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482800121] [2024-12-02 14:35:49,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:49,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:35:49,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:49,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:35:49,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:35:49,394 INFO L87 Difference]: Start difference. First operand 17189 states and 29130 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:35:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:50,879 INFO L93 Difference]: Finished difference Result 51653 states and 91034 transitions. [2024-12-02 14:35:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:35:50,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2024-12-02 14:35:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:51,081 INFO L225 Difference]: With dead ends: 51653 [2024-12-02 14:35:51,081 INFO L226 Difference]: Without dead ends: 34482 [2024-12-02 14:35:51,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:35:51,187 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 828 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:51,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 4360 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:35:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34482 states. [2024-12-02 14:35:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34482 to 34317. [2024-12-02 14:35:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34317 states, 26747 states have (on average 1.6147979212621977) internal successors, (43191), 27788 states have internal predecessors, (43191), 5948 states have call successors, (5948), 1590 states have call predecessors, (5948), 1621 states have return successors, (10787), 5962 states have call predecessors, (10787), 5914 states have call successors, (10787) [2024-12-02 14:35:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34317 states to 34317 states and 59926 transitions. [2024-12-02 14:35:52,619 INFO L78 Accepts]: Start accepts. Automaton has 34317 states and 59926 transitions. Word has length 120 [2024-12-02 14:35:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:52,619 INFO L471 AbstractCegarLoop]: Abstraction has 34317 states and 59926 transitions. [2024-12-02 14:35:52,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 14:35:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 34317 states and 59926 transitions. [2024-12-02 14:35:52,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 14:35:52,622 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:52,622 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-12-02 14:35:52,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:35:52,622 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:52,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1099548626, now seen corresponding path program 1 times [2024-12-02 14:35:52,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:52,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110166617] [2024-12-02 14:35:52,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:52,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:35:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110166617] [2024-12-02 14:35:52,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110166617] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:52,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:52,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:35:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258003139] [2024-12-02 14:35:52,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:52,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:35:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:52,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:35:52,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:35:52,783 INFO L87 Difference]: Start difference. First operand 34317 states and 59926 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:35:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:55,041 INFO L93 Difference]: Finished difference Result 68904 states and 123508 transitions. [2024-12-02 14:35:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:35:55,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2024-12-02 14:35:55,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:55,434 INFO L225 Difference]: With dead ends: 68904 [2024-12-02 14:35:55,435 INFO L226 Difference]: Without dead ends: 34605 [2024-12-02 14:35:55,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:35:55,633 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 11 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:55,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2465 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34605 states. [2024-12-02 14:35:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34605 to 34477. [2024-12-02 14:35:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34477 states, 26891 states have (on average 1.6121007028373806) internal successors, (43351), 27932 states have internal predecessors, (43351), 5948 states have call successors, (5948), 1622 states have call predecessors, (5948), 1637 states have return successors, (10731), 5946 states have call predecessors, (10731), 5914 states have call successors, (10731) [2024-12-02 14:35:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34477 states to 34477 states and 60030 transitions. [2024-12-02 14:35:56,829 INFO L78 Accepts]: Start accepts. Automaton has 34477 states and 60030 transitions. Word has length 121 [2024-12-02 14:35:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:56,830 INFO L471 AbstractCegarLoop]: Abstraction has 34477 states and 60030 transitions. [2024-12-02 14:35:56,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 14:35:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 34477 states and 60030 transitions. [2024-12-02 14:35:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 14:35:56,833 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:56,833 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2024-12-02 14:35:56,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:35:56,834 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:56,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:56,834 INFO L85 PathProgramCache]: Analyzing trace with hash 943705155, now seen corresponding path program 1 times [2024-12-02 14:35:56,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:56,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532459927] [2024-12-02 14:35:56,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:56,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:35:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 14:35:56,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:35:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532459927] [2024-12-02 14:35:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532459927] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:56,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:56,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:35:56,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698777696] [2024-12-02 14:35:56,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:56,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:35:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:35:56,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:35:56,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:35:56,963 INFO L87 Difference]: Start difference. First operand 34477 states and 60030 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:36:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:36:00,085 INFO L93 Difference]: Finished difference Result 103753 states and 191530 transitions. [2024-12-02 14:36:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:36:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2024-12-02 14:36:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:36:00,523 INFO L225 Difference]: With dead ends: 103753 [2024-12-02 14:36:00,524 INFO L226 Difference]: Without dead ends: 69294 [2024-12-02 14:36:00,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:36:00,849 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 823 mSDsluCounter, 3422 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 4363 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:36:00,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 4363 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:36:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69294 states. [2024-12-02 14:36:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69294 to 69001. [2024-12-02 14:36:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69001 states, 53826 states have (on average 1.609333779214506) internal successors, (86624), 55899 states have internal predecessors, (86624), 11873 states have call successors, (11873), 3238 states have call predecessors, (11873), 3301 states have return successors, (27105), 11911 states have call predecessors, (27105), 11807 states have call successors, (27105) [2024-12-02 14:36:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69001 states to 69001 states and 125602 transitions. [2024-12-02 14:36:04,196 INFO L78 Accepts]: Start accepts. Automaton has 69001 states and 125602 transitions. Word has length 131 [2024-12-02 14:36:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:36:04,196 INFO L471 AbstractCegarLoop]: Abstraction has 69001 states and 125602 transitions. [2024-12-02 14:36:04,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 14:36:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 69001 states and 125602 transitions. [2024-12-02 14:36:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-12-02 14:36:04,201 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:36:04,201 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2024-12-02 14:36:04,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:36:04,202 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:36:04,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:36:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash -801262673, now seen corresponding path program 1 times [2024-12-02 14:36:04,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:36:04,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105922621] [2024-12-02 14:36:04,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:36:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 14:36:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:36:04,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105922621] [2024-12-02 14:36:04,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105922621] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:36:04,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:36:04,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:36:04,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58355717] [2024-12-02 14:36:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:36:04,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:36:04,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:36:04,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:36:04,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:36:04,460 INFO L87 Difference]: Start difference. First operand 69001 states and 125602 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:36:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:36:08,764 INFO L93 Difference]: Finished difference Result 138624 states and 262641 transitions. [2024-12-02 14:36:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:36:08,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-12-02 14:36:08,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:36:09,293 INFO L225 Difference]: With dead ends: 138624 [2024-12-02 14:36:09,293 INFO L226 Difference]: Without dead ends: 69641 [2024-12-02 14:36:10,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:36:10,286 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 9 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:36:10,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2462 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:36:10,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69641 states. [2024-12-02 14:36:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69641 to 69385. [2024-12-02 14:36:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69385 states, 54178 states have (on average 1.6059655210602088) internal successors, (87008), 56251 states have internal predecessors, (87008), 11873 states have call successors, (11873), 3302 states have call predecessors, (11873), 3333 states have return successors, (27041), 11879 states have call predecessors, (27041), 11807 states have call successors, (27041) [2024-12-02 14:36:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69385 states to 69385 states and 125922 transitions. [2024-12-02 14:36:13,083 INFO L78 Accepts]: Start accepts. Automaton has 69385 states and 125922 transitions. Word has length 132 [2024-12-02 14:36:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:36:13,083 INFO L471 AbstractCegarLoop]: Abstraction has 69385 states and 125922 transitions. [2024-12-02 14:36:13,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 14:36:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 69385 states and 125922 transitions. [2024-12-02 14:36:13,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 14:36:13,091 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:36:13,091 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 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] [2024-12-02 14:36:13,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:36:13,091 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:36:13,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:36:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash 160180788, now seen corresponding path program 1 times [2024-12-02 14:36:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:36:13,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98240689] [2024-12-02 14:36:13,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:13,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:36:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 14:36:13,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:36:13,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98240689] [2024-12-02 14:36:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98240689] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:36:13,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:36:13,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:36:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440637890] [2024-12-02 14:36:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:36:13,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:36:13,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:36:13,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:36:13,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:36:13,245 INFO L87 Difference]: Start difference. First operand 69385 states and 125922 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 14:36:17,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:36:17,823 INFO L93 Difference]: Finished difference Result 141918 states and 263489 transitions. [2024-12-02 14:36:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:36:17,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 143 [2024-12-02 14:36:17,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:36:18,405 INFO L225 Difference]: With dead ends: 141918 [2024-12-02 14:36:18,405 INFO L226 Difference]: Without dead ends: 72503 [2024-12-02 14:36:19,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:36:19,427 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 715 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:36:19,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 3410 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:36:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72503 states. [2024-12-02 14:36:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72503 to 72152. [2024-12-02 14:36:21,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72152 states, 56379 states have (on average 1.5952216250731655) internal successors, (89937), 58519 states have internal predecessors, (89937), 12288 states have call successors, (12288), 3469 states have call predecessors, (12288), 3484 states have return successors, (27568), 12199 states have call predecessors, (27568), 12222 states have call successors, (27568) [2024-12-02 14:36:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72152 states to 72152 states and 129793 transitions. [2024-12-02 14:36:22,444 INFO L78 Accepts]: Start accepts. Automaton has 72152 states and 129793 transitions. Word has length 143 [2024-12-02 14:36:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:36:22,444 INFO L471 AbstractCegarLoop]: Abstraction has 72152 states and 129793 transitions. [2024-12-02 14:36:22,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 14:36:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 72152 states and 129793 transitions. [2024-12-02 14:36:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 14:36:22,450 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:36:22,450 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:36:22,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 14:36:22,450 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:36:22,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:36:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash -475395651, now seen corresponding path program 1 times [2024-12-02 14:36:22,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:36:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420388161] [2024-12-02 14:36:22,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:36:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 14:36:22,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:36:22,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420388161] [2024-12-02 14:36:22,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420388161] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:36:22,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995292408] [2024-12-02 14:36:22,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:22,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:36:22,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:36:22,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:36:22,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:36:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:22,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:36:22,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:36:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:36:23,021 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:36:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995292408] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:36:23,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:36:23,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 14:36:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274189357] [2024-12-02 14:36:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:36:23,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:36:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:36:23,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:36:23,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:36:23,022 INFO L87 Difference]: Start difference. First operand 72152 states and 129793 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-12-02 14:36:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:36:31,874 INFO L93 Difference]: Finished difference Result 187249 states and 377496 transitions. [2024-12-02 14:36:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:36:31,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 148 [2024-12-02 14:36:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:36:32,741 INFO L225 Difference]: With dead ends: 187249 [2024-12-02 14:36:32,741 INFO L226 Difference]: Without dead ends: 111227 [2024-12-02 14:36:33,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:36:33,431 INFO L435 NwaCegarLoop]: 410 mSDtfsCounter, 2267 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 4558 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 4558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:36:33,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 2179 Invalid, 5301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 4558 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 14:36:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111227 states. [2024-12-02 14:36:38,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111227 to 98695. [2024-12-02 14:36:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98695 states, 77180 states have (on average 1.5906063747084738) internal successors, (122763), 80042 states have internal predecessors, (122763), 16686 states have call successors, (16686), 4541 states have call predecessors, (16686), 4828 states have return successors, (44007), 16611 states have call predecessors, (44007), 16604 states have call successors, (44007) [2024-12-02 14:36:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98695 states to 98695 states and 183456 transitions. [2024-12-02 14:36:39,554 INFO L78 Accepts]: Start accepts. Automaton has 98695 states and 183456 transitions. Word has length 148 [2024-12-02 14:36:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:36:39,555 INFO L471 AbstractCegarLoop]: Abstraction has 98695 states and 183456 transitions. [2024-12-02 14:36:39,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-12-02 14:36:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 98695 states and 183456 transitions. [2024-12-02 14:36:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 14:36:39,562 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:36:39,562 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:36:39,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:36:39,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:36:39,763 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:36:39,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:36:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1122919663, now seen corresponding path program 1 times [2024-12-02 14:36:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:36:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241762464] [2024-12-02 14:36:39,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:36:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-12-02 14:36:40,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:36:40,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241762464] [2024-12-02 14:36:40,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241762464] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:36:40,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701360404] [2024-12-02 14:36:40,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:36:40,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:36:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:36:40,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:36:40,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:36:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:36:40,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:36:40,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:36:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 14:36:40,648 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:36:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701360404] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:36:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:36:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:36:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335250692] [2024-12-02 14:36:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:36:40,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:36:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:36:40,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:36:40,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:36:40,650 INFO L87 Difference]: Start difference. First operand 98695 states and 183456 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 14:36:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:36:53,137 INFO L93 Difference]: Finished difference Result 236880 states and 521962 transitions. [2024-12-02 14:36:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:36:53,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 187 [2024-12-02 14:36:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:36:54,452 INFO L225 Difference]: With dead ends: 236880 [2024-12-02 14:36:54,452 INFO L226 Difference]: Without dead ends: 138107 [2024-12-02 14:36:55,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:36:55,848 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 2175 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 3636 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 3636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:36:55,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2273 Valid, 2120 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 3636 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 14:36:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138107 states. [2024-12-02 14:37:01,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138107 to 113569. [2024-12-02 14:37:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113569 states, 89380 states have (on average 1.5751957932423362) internal successors, (140791), 92547 states have internal predecessors, (140791), 18494 states have call successors, (18494), 5149 states have call predecessors, (18494), 5694 states have return successors, (57180), 18356 states have call predecessors, (57180), 18412 states have call successors, (57180) [2024-12-02 14:37:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113569 states to 113569 states and 216465 transitions. [2024-12-02 14:37:02,834 INFO L78 Accepts]: Start accepts. Automaton has 113569 states and 216465 transitions. Word has length 187 [2024-12-02 14:37:02,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:02,834 INFO L471 AbstractCegarLoop]: Abstraction has 113569 states and 216465 transitions. [2024-12-02 14:37:02,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 14:37:02,835 INFO L276 IsEmpty]: Start isEmpty. Operand 113569 states and 216465 transitions. [2024-12-02 14:37:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 14:37:02,843 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:02,843 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:02,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:37:03,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 14:37:03,044 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:03,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:03,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1351401164, now seen corresponding path program 1 times [2024-12-02 14:37:03,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:03,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191587308] [2024-12-02 14:37:03,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:03,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 14:37:03,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:03,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191587308] [2024-12-02 14:37:03,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191587308] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:37:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041877083] [2024-12-02 14:37:03,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:03,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:37:03,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:37:03,576 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:37:03,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:37:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:03,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:37:03,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:37:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 14:37:04,052 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:37:04,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041877083] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:04,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:37:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:37:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088127378] [2024-12-02 14:37:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:04,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:37:04,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:04,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:37:04,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:37:04,054 INFO L87 Difference]: Start difference. First operand 113569 states and 216465 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 14:37:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:17,894 INFO L93 Difference]: Finished difference Result 265254 states and 608843 transitions. [2024-12-02 14:37:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:37:17,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 183 [2024-12-02 14:37:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:19,539 INFO L225 Difference]: With dead ends: 265254 [2024-12-02 14:37:19,539 INFO L226 Difference]: Without dead ends: 151127 [2024-12-02 14:37:21,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:37:21,182 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 2168 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 4293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:21,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 2114 Invalid, 4293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 14:37:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151127 states. [2024-12-02 14:37:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151127 to 121337. [2024-12-02 14:37:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121337 states, 96168 states have (on average 1.572570917560935) internal successors, (151231), 99479 states have internal predecessors, (151231), 18782 states have call successors, (18782), 5757 states have call predecessors, (18782), 6386 states have return successors, (58686), 18584 states have call predecessors, (58686), 18700 states have call successors, (58686) [2024-12-02 14:37:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121337 states to 121337 states and 228699 transitions. [2024-12-02 14:37:29,164 INFO L78 Accepts]: Start accepts. Automaton has 121337 states and 228699 transitions. Word has length 183 [2024-12-02 14:37:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:29,164 INFO L471 AbstractCegarLoop]: Abstraction has 121337 states and 228699 transitions. [2024-12-02 14:37:29,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 14:37:29,165 INFO L276 IsEmpty]: Start isEmpty. Operand 121337 states and 228699 transitions. [2024-12-02 14:37:29,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:37:29,174 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:29,174 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:29,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:37:29,529 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:29,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash 485191725, now seen corresponding path program 1 times [2024-12-02 14:37:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:29,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362372948] [2024-12-02 14:37:29,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:29,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:37:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 14:37:29,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:29,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362372948] [2024-12-02 14:37:29,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362372948] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:37:29,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571667049] [2024-12-02 14:37:29,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:29,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:37:29,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:37:29,885 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:37:29,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:37:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:30,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:37:30,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:37:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 14:37:30,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:37:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571667049] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:30,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:37:30,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:37:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255114385] [2024-12-02 14:37:30,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:30,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:37:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:30,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:37:30,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:37:30,397 INFO L87 Difference]: Start difference. First operand 121337 states and 228699 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 14:37:44,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:44,332 INFO L93 Difference]: Finished difference Result 280790 states and 631637 transitions. [2024-12-02 14:37:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:37:44,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 184 [2024-12-02 14:37:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:46,024 INFO L225 Difference]: With dead ends: 280790 [2024-12-02 14:37:46,024 INFO L226 Difference]: Without dead ends: 158607 [2024-12-02 14:37:47,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:37:47,760 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 2162 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 4239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:47,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2258 Valid, 2108 Invalid, 4239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3511 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 14:37:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158607 states. [2024-12-02 14:37:54,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158607 to 129641. [2024-12-02 14:37:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129641 states, 103276 states have (on average 1.5680797087416243) internal successors, (161945), 106777 states have internal predecessors, (161945), 19086 states have call successors, (19086), 6509 states have call predecessors, (19086), 7278 states have return successors, (61536), 18838 states have call predecessors, (61536), 19004 states have call successors, (61536) [2024-12-02 14:37:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129641 states to 129641 states and 242567 transitions. [2024-12-02 14:37:56,399 INFO L78 Accepts]: Start accepts. Automaton has 129641 states and 242567 transitions. Word has length 184 [2024-12-02 14:37:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:56,399 INFO L471 AbstractCegarLoop]: Abstraction has 129641 states and 242567 transitions. [2024-12-02 14:37:56,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 14:37:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 129641 states and 242567 transitions. [2024-12-02 14:37:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:37:56,407 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:56,407 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:56,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 14:37:56,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 14:37:56,608 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:56,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1708082792, now seen corresponding path program 1 times [2024-12-02 14:37:56,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:56,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289308432] [2024-12-02 14:37:56,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 14:37:56,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289308432] [2024-12-02 14:37:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289308432] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:37:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923551509] [2024-12-02 14:37:56,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:56,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:37:56,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:37:56,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:37:56,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:37:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:57,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:37:57,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:37:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 14:37:57,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:37:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923551509] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:57,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:37:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:37:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197098478] [2024-12-02 14:37:57,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:57,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:37:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:57,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:37:57,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:37:57,257 INFO L87 Difference]: Start difference. First operand 129641 states and 242567 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 14:38:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:11,678 INFO L93 Difference]: Finished difference Result 295994 states and 654976 transitions. [2024-12-02 14:38:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:38:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 185 [2024-12-02 14:38:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:13,473 INFO L225 Difference]: With dead ends: 295994 [2024-12-02 14:38:13,473 INFO L226 Difference]: Without dead ends: 165219 [2024-12-02 14:38:14,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:38:14,949 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 2106 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 3453 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 4171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 3453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:14,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 2168 Invalid, 4171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 3453 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 14:38:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165219 states. [2024-12-02 14:38:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165219 to 137521. [2024-12-02 14:38:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137521 states, 109616 states have (on average 1.556843891402715) internal successors, (170655), 113439 states have internal predecessors, (170655), 19638 states have call successors, (19638), 7279 states have call predecessors, (19638), 8266 states have return successors, (66168), 19286 states have call predecessors, (66168), 19556 states have call successors, (66168) [2024-12-02 14:38:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137521 states to 137521 states and 256461 transitions. [2024-12-02 14:38:23,420 INFO L78 Accepts]: Start accepts. Automaton has 137521 states and 256461 transitions. Word has length 185 [2024-12-02 14:38:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:23,420 INFO L471 AbstractCegarLoop]: Abstraction has 137521 states and 256461 transitions. [2024-12-02 14:38:23,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 14:38:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 137521 states and 256461 transitions. [2024-12-02 14:38:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 14:38:23,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:23,429 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:23,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:38:23,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 14:38:23,629 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:23,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1304608857, now seen corresponding path program 1 times [2024-12-02 14:38:23,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528807672] [2024-12-02 14:38:23,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:23,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-02 14:38:23,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528807672] [2024-12-02 14:38:23,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528807672] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:38:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221537589] [2024-12-02 14:38:23,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:23,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:23,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:38:23,830 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:38:23,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:38:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:24,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:38:24,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:38:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 14:38:24,161 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:38:24,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221537589] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:38:24,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:38:24,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-12-02 14:38:24,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887856935] [2024-12-02 14:38:24,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:38:24,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:38:24,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:24,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:38:24,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:38:24,163 INFO L87 Difference]: Start difference. First operand 137521 states and 256461 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 14:38:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:31,760 INFO L93 Difference]: Finished difference Result 265991 states and 513627 transitions. [2024-12-02 14:38:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:38:31,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 191 [2024-12-02 14:38:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:32,718 INFO L225 Difference]: With dead ends: 265991 [2024-12-02 14:38:32,718 INFO L226 Difference]: Without dead ends: 138511 [2024-12-02 14:38:33,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:38:33,853 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 0 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:33,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2532 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:38:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138511 states. [2024-12-02 14:38:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138511 to 137935. [2024-12-02 14:38:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137935 states, 110030 states have (on average 1.554748704898664) internal successors, (171069), 113853 states have internal predecessors, (171069), 19638 states have call successors, (19638), 7279 states have call predecessors, (19638), 8266 states have return successors, (66168), 19286 states have call predecessors, (66168), 19556 states have call successors, (66168) [2024-12-02 14:38:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137935 states to 137935 states and 256875 transitions. [2024-12-02 14:38:41,014 INFO L78 Accepts]: Start accepts. Automaton has 137935 states and 256875 transitions. Word has length 191 [2024-12-02 14:38:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:41,015 INFO L471 AbstractCegarLoop]: Abstraction has 137935 states and 256875 transitions. [2024-12-02 14:38:41,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 14:38:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 137935 states and 256875 transitions. [2024-12-02 14:38:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-12-02 14:38:41,024 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:41,024 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:41,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 14:38:41,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:41,224 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:41,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1368656285, now seen corresponding path program 1 times [2024-12-02 14:38:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:41,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711684538] [2024-12-02 14:38:41,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-12-02 14:38:41,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:41,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711684538] [2024-12-02 14:38:41,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711684538] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:38:41,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713915262] [2024-12-02 14:38:41,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:41,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:38:41,492 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:38:41,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e9ae1c2-0f08-4cb7-a569-bafb113f6f96/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 14:38:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:41,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 2056 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:38:41,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:38:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 14:38:41,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:38:41,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713915262] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:38:41,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:38:41,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2024-12-02 14:38:41,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898019541] [2024-12-02 14:38:41,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:38:41,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:38:41,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:41,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:38:41,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:38:41,981 INFO L87 Difference]: Start difference. First operand 137935 states and 256875 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 6 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2024-12-02 14:39:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:01,788 INFO L93 Difference]: Finished difference Result 442160 states and 855427 transitions. [2024-12-02 14:39:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:39:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 6 states have call successors, (25), 4 states have call predecessors, (25), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 200 [2024-12-02 14:39:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:04,473 INFO L225 Difference]: With dead ends: 442160 [2024-12-02 14:39:04,473 INFO L226 Difference]: Without dead ends: 304243