./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC --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 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:07:02,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:07:02,503 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:07:02,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:07:02,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:07:02,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:07:02,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:07:02,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:07:02,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:07:02,563 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:07:02,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:07:02,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:07:02,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:07:02,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:07:02,565 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:07:02,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:07:02,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:07:02,566 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:07:02,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:07:02,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:07:02,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:07:02,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:07:02,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:07:02,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:07:02,568 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:07:02,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:07:02,568 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:07:02,568 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:07:02,568 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:07:02,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:07:02,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:07:02,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:07:02,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:07:02,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:07:02,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:07:02,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:07:02,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:07:02,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:07:02,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:07:02,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:07:02,571 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:07:02,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:07:02,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:07:02,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:07:02,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:07:02,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:07:02,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:07:02,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:07:02,573 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_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC 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 -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2024-11-24 00:07:02,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:07:02,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:07:02,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:07:02,955 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:07:02,955 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:07:02,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2024-11-24 00:07:06,524 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/data/a78741b11/8822780e656b46a194a767a3700967a4/FLAGd1ae30459 [2024-11-24 00:07:07,157 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:07:07,158 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2024-11-24 00:07:07,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/data/a78741b11/8822780e656b46a194a767a3700967a4/FLAGd1ae30459 [2024-11-24 00:07:07,200 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/data/a78741b11/8822780e656b46a194a767a3700967a4 [2024-11-24 00:07:07,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:07:07,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:07:07,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:07:07,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:07:07,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:07:07,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:07:07" (1/1) ... [2024-11-24 00:07:07,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed01837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:07, skipping insertion in model container [2024-11-24 00:07:07,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:07:07" (1/1) ... [2024-11-24 00:07:07,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:07:07,802 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_6ff12b6d-da09-4955-93c4-b8b46a58e83c/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2024-11-24 00:07:08,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:07:08,062 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:07:08,074 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-11-24 00:07:08,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2024-11-24 00:07:08,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [185] [2024-11-24 00:07:08,077 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [370] [2024-11-24 00:07:08,078 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1901] [2024-11-24 00:07:08,078 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1939] [2024-11-24 00:07:08,079 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1948] [2024-11-24 00:07:08,079 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2024-11-24 00:07:08,081 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2407] [2024-11-24 00:07:08,082 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2757] [2024-11-24 00:07:08,219 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_6ff12b6d-da09-4955-93c4-b8b46a58e83c/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c[40826,40839] [2024-11-24 00:07:08,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:07:08,305 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:07:08,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08 WrapperNode [2024-11-24 00:07:08,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:07:08,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:07:08,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:07:08,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:07:08,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,438 INFO L138 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1116 [2024-11-24 00:07:08,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:07:08,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:07:08,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:07:08,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:07:08,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,523 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-24 00:07:08,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,565 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:07:08,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:07:08,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:07:08,651 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:07:08,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (1/1) ... [2024-11-24 00:07:08,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:07:08,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:08,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:07:08,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:07:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-24 00:07:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-24 00:07:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:07:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-24 00:07:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-24 00:07:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-24 00:07:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-24 00:07:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-24 00:07:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-24 00:07:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-24 00:07:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-24 00:07:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-24 00:07:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-24 00:07:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-24 00:07:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-24 00:07:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-24 00:07:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-24 00:07:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-24 00:07:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-24 00:07:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-24 00:07:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-24 00:07:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-24 00:07:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-24 00:07:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-24 00:07:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-24 00:07:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-24 00:07:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-24 00:07:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-24 00:07:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-24 00:07:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-24 00:07:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-24 00:07:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-24 00:07:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-24 00:07:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-24 00:07:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-24 00:07:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-24 00:07:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-24 00:07:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:07:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 00:07:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 00:07:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 00:07:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-24 00:07:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-24 00:07:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-24 00:07:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-24 00:07:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-24 00:07:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-24 00:07:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-24 00:07:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-24 00:07:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-24 00:07:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:07:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:07:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-24 00:07:08,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-24 00:07:09,025 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:07:09,030 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:07:11,134 INFO L? ?]: Removed 443 outVars from TransFormulas that were not future-live. [2024-11-24 00:07:11,134 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:07:11,172 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:07:11,172 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:07:11,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:07:11 BoogieIcfgContainer [2024-11-24 00:07:11,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:07:11,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:07:11,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:07:11,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:07:11,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:07:07" (1/3) ... [2024-11-24 00:07:11,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50620407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:07:11, skipping insertion in model container [2024-11-24 00:07:11,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:08" (2/3) ... [2024-11-24 00:07:11,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50620407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:07:11, skipping insertion in model container [2024-11-24 00:07:11,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:07:11" (3/3) ... [2024-11-24 00:07:11,195 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2024-11-24 00:07:11,213 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:07:11,215 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product11.cil.c that has 25 procedures, 560 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:07:11,346 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:07:11,365 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;@33031c24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:07:11,366 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:07:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 437 states have (on average 1.6933638443935928) internal successors, (740), 458 states have internal predecessors, (740), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-24 00:07:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-24 00:07:11,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:11,427 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:11,431 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:11,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:11,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1863787822, now seen corresponding path program 1 times [2024-11-24 00:07:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:11,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781820196] [2024-11-24 00:07:11,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:12,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781820196] [2024-11-24 00:07:12,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781820196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:12,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845324286] [2024-11-24 00:07:12,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:12,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:12,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:12,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:12,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:07:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:13,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:07:13,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:13,197 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845324286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:13,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:13,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-24 00:07:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453509242] [2024-11-24 00:07:13,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:13,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:07:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:13,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:07:13,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:07:13,242 INFO L87 Difference]: Start difference. First operand has 560 states, 437 states have (on average 1.6933638443935928) internal successors, (740), 458 states have internal predecessors, (740), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 00:07:13,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:13,341 INFO L93 Difference]: Finished difference Result 581 states and 964 transitions. [2024-11-24 00:07:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:07:13,343 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2024-11-24 00:07:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:13,377 INFO L225 Difference]: With dead ends: 581 [2024-11-24 00:07:13,378 INFO L226 Difference]: Without dead ends: 552 [2024-11-24 00:07:13,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:07:13,389 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:13,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-24 00:07:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-24 00:07:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 431 states have (on average 1.691415313225058) internal successors, (729), 450 states have internal predecessors, (729), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-24 00:07:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 918 transitions. [2024-11-24 00:07:13,513 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 918 transitions. Word has length 125 [2024-11-24 00:07:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:13,515 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 918 transitions. [2024-11-24 00:07:13,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 00:07:13,516 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 918 transitions. [2024-11-24 00:07:13,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 00:07:13,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:13,526 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:13,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:13,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:07:13,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:13,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:13,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1021608726, now seen corresponding path program 1 times [2024-11-24 00:07:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:13,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245397273] [2024-11-24 00:07:13,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:13,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:14,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:14,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245397273] [2024-11-24 00:07:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245397273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:14,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672083528] [2024-11-24 00:07:14,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:14,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:14,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:14,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:14,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:07:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:14,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:14,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:07:14,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672083528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:14,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:14,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:14,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588987901] [2024-11-24 00:07:14,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:14,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:14,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:14,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:14,899 INFO L87 Difference]: Start difference. First operand 552 states and 918 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:15,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:15,080 INFO L93 Difference]: Finished difference Result 1095 states and 1828 transitions. [2024-11-24 00:07:15,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:07:15,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2024-11-24 00:07:15,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:15,090 INFO L225 Difference]: With dead ends: 1095 [2024-11-24 00:07:15,090 INFO L226 Difference]: Without dead ends: 552 [2024-11-24 00:07:15,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:15,099 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 5 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:15,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2712 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-24 00:07:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-24 00:07:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 431 states have (on average 1.6890951276102089) internal successors, (728), 450 states have internal predecessors, (728), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-24 00:07:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 917 transitions. [2024-11-24 00:07:15,186 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 917 transitions. Word has length 126 [2024-11-24 00:07:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:15,187 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 917 transitions. [2024-11-24 00:07:15,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:15,188 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 917 transitions. [2024-11-24 00:07:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-24 00:07:15,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:15,201 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:15,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:15,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:15,402 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:15,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:15,403 INFO L85 PathProgramCache]: Analyzing trace with hash -857667856, now seen corresponding path program 1 times [2024-11-24 00:07:15,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:15,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690420084] [2024-11-24 00:07:15,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:15,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:15,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:15,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690420084] [2024-11-24 00:07:15,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690420084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:15,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771840136] [2024-11-24 00:07:15,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:15,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:15,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:15,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:15,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:07:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:16,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:16,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:07:16,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771840136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:16,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:16,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450637926] [2024-11-24 00:07:16,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:16,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:16,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:16,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:16,532 INFO L87 Difference]: Start difference. First operand 552 states and 917 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:16,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:16,688 INFO L93 Difference]: Finished difference Result 1095 states and 1826 transitions. [2024-11-24 00:07:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:07:16,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-24 00:07:16,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:16,696 INFO L225 Difference]: With dead ends: 1095 [2024-11-24 00:07:16,696 INFO L226 Difference]: Without dead ends: 552 [2024-11-24 00:07:16,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:16,707 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 4 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:16,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2712 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-24 00:07:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-24 00:07:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 431 states have (on average 1.6867749419953597) internal successors, (727), 450 states have internal predecessors, (727), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-24 00:07:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 916 transitions. [2024-11-24 00:07:16,750 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 916 transitions. Word has length 128 [2024-11-24 00:07:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:16,752 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 916 transitions. [2024-11-24 00:07:16,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 916 transitions. [2024-11-24 00:07:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-24 00:07:16,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:16,763 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:16,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:16,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-24 00:07:16,964 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:16,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:16,965 INFO L85 PathProgramCache]: Analyzing trace with hash -92595094, now seen corresponding path program 1 times [2024-11-24 00:07:16,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:16,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595358741] [2024-11-24 00:07:16,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:17,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:17,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595358741] [2024-11-24 00:07:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595358741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:17,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409477602] [2024-11-24 00:07:17,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:17,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:17,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:17,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:17,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:07:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:17,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:17,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:07:17,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:17,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409477602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:17,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:17,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:17,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97620985] [2024-11-24 00:07:17,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:17,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:17,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:17,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:17,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:17,906 INFO L87 Difference]: Start difference. First operand 552 states and 916 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:18,094 INFO L93 Difference]: Finished difference Result 1102 states and 1833 transitions. [2024-11-24 00:07:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2024-11-24 00:07:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:18,102 INFO L225 Difference]: With dead ends: 1102 [2024-11-24 00:07:18,102 INFO L226 Difference]: Without dead ends: 561 [2024-11-24 00:07:18,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:18,110 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 13 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:18,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2709 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-24 00:07:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-24 00:07:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.683371298405467) internal successors, (739), 458 states have internal predecessors, (739), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-24 00:07:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2024-11-24 00:07:18,162 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 130 [2024-11-24 00:07:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:18,162 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2024-11-24 00:07:18,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2024-11-24 00:07:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-24 00:07:18,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:18,169 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:18,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:07:18,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:18,369 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:18,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash 422411367, now seen corresponding path program 1 times [2024-11-24 00:07:18,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:18,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766613514] [2024-11-24 00:07:18,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766613514] [2024-11-24 00:07:18,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766613514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033013893] [2024-11-24 00:07:18,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:18,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:18,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:18,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:18,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:07:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:19,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:19,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:07:19,219 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:19,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033013893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:19,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:19,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:19,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295292149] [2024-11-24 00:07:19,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:19,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:19,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:19,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:19,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:19,221 INFO L87 Difference]: Start difference. First operand 561 states and 928 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:19,341 INFO L93 Difference]: Finished difference Result 1104 states and 1834 transitions. [2024-11-24 00:07:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:19,342 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2024-11-24 00:07:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:19,348 INFO L225 Difference]: With dead ends: 1104 [2024-11-24 00:07:19,349 INFO L226 Difference]: Without dead ends: 561 [2024-11-24 00:07:19,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:19,353 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 11 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:19,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2709 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-24 00:07:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-24 00:07:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.6810933940774488) internal successors, (738), 458 states have internal predecessors, (738), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-24 00:07:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2024-11-24 00:07:19,388 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 131 [2024-11-24 00:07:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:19,389 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2024-11-24 00:07:19,389 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2024-11-24 00:07:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-24 00:07:19,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:19,395 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:19,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:19,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:19,595 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:19,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1457543802, now seen corresponding path program 1 times [2024-11-24 00:07:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:19,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504496827] [2024-11-24 00:07:19,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:19,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504496827] [2024-11-24 00:07:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504496827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:19,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012476044] [2024-11-24 00:07:19,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:19,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:19,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:19,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:19,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:07:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:20,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:20,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:07:20,492 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:20,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012476044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:20,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:20,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:20,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174802374] [2024-11-24 00:07:20,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:20,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:20,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:20,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:20,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:20,494 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:20,612 INFO L93 Difference]: Finished difference Result 1104 states and 1833 transitions. [2024-11-24 00:07:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-24 00:07:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:20,621 INFO L225 Difference]: With dead ends: 1104 [2024-11-24 00:07:20,621 INFO L226 Difference]: Without dead ends: 561 [2024-11-24 00:07:20,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:20,627 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 10 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:20,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2709 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-24 00:07:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-24 00:07:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.6788154897494305) internal successors, (737), 458 states have internal predecessors, (737), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-24 00:07:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 926 transitions. [2024-11-24 00:07:20,667 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 926 transitions. Word has length 132 [2024-11-24 00:07:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:20,667 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 926 transitions. [2024-11-24 00:07:20,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 926 transitions. [2024-11-24 00:07:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-24 00:07:20,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:20,673 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:20,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:07:20,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:20,876 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:20,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash -271898173, now seen corresponding path program 1 times [2024-11-24 00:07:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:20,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995003065] [2024-11-24 00:07:20,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:20,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:07:21,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995003065] [2024-11-24 00:07:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995003065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835773659] [2024-11-24 00:07:21,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:21,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:21,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:21,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:21,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:07:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:21,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:07:21,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:07:21,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:21,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835773659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:21,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:21,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-24 00:07:21,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330755686] [2024-11-24 00:07:21,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:21,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:07:21,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:21,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:07:21,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:07:21,871 INFO L87 Difference]: Start difference. First operand 561 states and 926 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:22,073 INFO L93 Difference]: Finished difference Result 1123 states and 1863 transitions. [2024-11-24 00:07:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:07:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2024-11-24 00:07:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:22,083 INFO L225 Difference]: With dead ends: 1123 [2024-11-24 00:07:22,083 INFO L226 Difference]: Without dead ends: 584 [2024-11-24 00:07:22,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:07:22,089 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 100 mSDsluCounter, 4444 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5350 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:22,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5350 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-24 00:07:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 580. [2024-11-24 00:07:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 455 states have (on average 1.676923076923077) internal successors, (763), 476 states have internal predecessors, (763), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2024-11-24 00:07:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 957 transitions. [2024-11-24 00:07:22,138 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 957 transitions. Word has length 133 [2024-11-24 00:07:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:22,138 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 957 transitions. [2024-11-24 00:07:22,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 957 transitions. [2024-11-24 00:07:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-24 00:07:22,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:22,145 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:22,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:22,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:22,347 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:22,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1709263906, now seen corresponding path program 1 times [2024-11-24 00:07:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:22,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626900571] [2024-11-24 00:07:22,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:22,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626900571] [2024-11-24 00:07:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626900571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689049148] [2024-11-24 00:07:22,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:22,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:22,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:22,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:22,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:07:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:23,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:23,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:07:23,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689049148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:23,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:23,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:23,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837322365] [2024-11-24 00:07:23,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:23,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:23,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:23,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:23,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:23,146 INFO L87 Difference]: Start difference. First operand 580 states and 957 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:23,368 INFO L93 Difference]: Finished difference Result 1179 states and 1964 transitions. [2024-11-24 00:07:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:07:23,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2024-11-24 00:07:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:23,376 INFO L225 Difference]: With dead ends: 1179 [2024-11-24 00:07:23,376 INFO L226 Difference]: Without dead ends: 595 [2024-11-24 00:07:23,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:23,380 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 76 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:23,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2600 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:07:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-24 00:07:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 580. [2024-11-24 00:07:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 455 states have (on average 1.665934065934066) internal successors, (758), 476 states have internal predecessors, (758), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2024-11-24 00:07:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 952 transitions. [2024-11-24 00:07:23,416 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 952 transitions. Word has length 133 [2024-11-24 00:07:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:23,417 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 952 transitions. [2024-11-24 00:07:23,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 952 transitions. [2024-11-24 00:07:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-24 00:07:23,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:23,422 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:23,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:23,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:23,623 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:23,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2086896018, now seen corresponding path program 1 times [2024-11-24 00:07:23,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:23,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797064457] [2024-11-24 00:07:23,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:23,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:07:23,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797064457] [2024-11-24 00:07:23,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797064457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:23,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003043970] [2024-11-24 00:07:23,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:23,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:23,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:23,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:23,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:07:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:24,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:24,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:07:24,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:24,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003043970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:24,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:24,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031509796] [2024-11-24 00:07:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:24,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:24,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:24,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:24,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:24,418 INFO L87 Difference]: Start difference. First operand 580 states and 952 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:24,633 INFO L93 Difference]: Finished difference Result 1179 states and 1954 transitions. [2024-11-24 00:07:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:07:24,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2024-11-24 00:07:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:24,641 INFO L225 Difference]: With dead ends: 1179 [2024-11-24 00:07:24,642 INFO L226 Difference]: Without dead ends: 595 [2024-11-24 00:07:24,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:24,646 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 75 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:24,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2600 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:07:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-24 00:07:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 580. [2024-11-24 00:07:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 455 states have (on average 1.6549450549450548) internal successors, (753), 476 states have internal predecessors, (753), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2024-11-24 00:07:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 947 transitions. [2024-11-24 00:07:24,682 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 947 transitions. Word has length 135 [2024-11-24 00:07:24,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:24,683 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 947 transitions. [2024-11-24 00:07:24,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:24,683 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 947 transitions. [2024-11-24 00:07:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 00:07:24,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:24,688 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:24,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:07:24,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:24,892 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:24,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:24,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1067714370, now seen corresponding path program 1 times [2024-11-24 00:07:24,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:24,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213565946] [2024-11-24 00:07:24,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:24,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 00:07:25,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:25,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213565946] [2024-11-24 00:07:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213565946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:25,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701231748] [2024-11-24 00:07:25,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:25,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:25,054 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:25,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:07:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:25,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:25,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:07:25,663 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:25,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701231748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:25,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:25,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650714368] [2024-11-24 00:07:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:25,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:25,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:25,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:25,666 INFO L87 Difference]: Start difference. First operand 580 states and 947 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:25,967 INFO L93 Difference]: Finished difference Result 1230 states and 2026 transitions. [2024-11-24 00:07:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:25,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2024-11-24 00:07:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:25,977 INFO L225 Difference]: With dead ends: 1230 [2024-11-24 00:07:25,977 INFO L226 Difference]: Without dead ends: 676 [2024-11-24 00:07:25,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:25,982 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 130 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:25,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2631 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:07:25,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-11-24 00:07:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 631. [2024-11-24 00:07:26,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 505 states have (on average 1.6594059405940593) internal successors, (838), 526 states have internal predecessors, (838), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2024-11-24 00:07:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1031 transitions. [2024-11-24 00:07:26,026 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1031 transitions. Word has length 137 [2024-11-24 00:07:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:26,026 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 1031 transitions. [2024-11-24 00:07:26,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1031 transitions. [2024-11-24 00:07:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-24 00:07:26,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:26,032 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:26,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:26,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 00:07:26,237 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:26,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1895614901, now seen corresponding path program 1 times [2024-11-24 00:07:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:26,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137199876] [2024-11-24 00:07:26,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:26,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:07:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137199876] [2024-11-24 00:07:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137199876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:26,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897768739] [2024-11-24 00:07:26,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:26,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:26,498 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:26,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:07:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:27,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:07:27,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:07:27,209 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:27,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897768739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:27,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:27,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 00:07:27,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127350492] [2024-11-24 00:07:27,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:27,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:07:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:27,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:07:27,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:07:27,212 INFO L87 Difference]: Start difference. First operand 631 states and 1031 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:27,460 INFO L93 Difference]: Finished difference Result 1192 states and 1955 transitions. [2024-11-24 00:07:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:07:27,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2024-11-24 00:07:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:27,469 INFO L225 Difference]: With dead ends: 1192 [2024-11-24 00:07:27,469 INFO L226 Difference]: Without dead ends: 653 [2024-11-24 00:07:27,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:07:27,473 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 113 mSDsluCounter, 5227 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6113 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:27,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6113 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-24 00:07:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 631. [2024-11-24 00:07:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 505 states have (on average 1.6594059405940593) internal successors, (838), 526 states have internal predecessors, (838), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2024-11-24 00:07:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1031 transitions. [2024-11-24 00:07:27,513 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1031 transitions. Word has length 138 [2024-11-24 00:07:27,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:27,513 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 1031 transitions. [2024-11-24 00:07:27,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1031 transitions. [2024-11-24 00:07:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-24 00:07:27,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:27,519 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:27,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:07:27,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 00:07:27,720 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:27,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash 644341909, now seen corresponding path program 1 times [2024-11-24 00:07:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:27,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187627429] [2024-11-24 00:07:27,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 00:07:27,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187627429] [2024-11-24 00:07:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187627429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844215353] [2024-11-24 00:07:27,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:27,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:27,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:27,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:27,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:07:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:28,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:28,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:07:28,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844215353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:28,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:28,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:28,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465554440] [2024-11-24 00:07:28,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:28,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:28,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:28,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:28,470 INFO L87 Difference]: Start difference. First operand 631 states and 1031 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:28,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:28,779 INFO L93 Difference]: Finished difference Result 1233 states and 2027 transitions. [2024-11-24 00:07:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:28,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-11-24 00:07:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:28,788 INFO L225 Difference]: With dead ends: 1233 [2024-11-24 00:07:28,788 INFO L226 Difference]: Without dead ends: 664 [2024-11-24 00:07:28,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:28,792 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 124 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:28,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2604 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:07:28,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-24 00:07:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 631. [2024-11-24 00:07:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 505 states have (on average 1.6495049504950494) internal successors, (833), 526 states have internal predecessors, (833), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2024-11-24 00:07:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1026 transitions. [2024-11-24 00:07:28,832 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1026 transitions. Word has length 138 [2024-11-24 00:07:28,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:28,833 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 1026 transitions. [2024-11-24 00:07:28,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1026 transitions. [2024-11-24 00:07:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-24 00:07:28,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:28,838 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:28,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:07:29,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-24 00:07:29,040 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:29,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:29,040 INFO L85 PathProgramCache]: Analyzing trace with hash -7845194, now seen corresponding path program 1 times [2024-11-24 00:07:29,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:29,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968661245] [2024-11-24 00:07:29,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:29,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:07:29,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:29,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968661245] [2024-11-24 00:07:29,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968661245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:29,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379379951] [2024-11-24 00:07:29,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:29,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:29,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:29,321 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:29,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:07:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:29,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:07:29,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:07:29,939 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:29,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379379951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:29,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:29,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-24 00:07:29,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306412181] [2024-11-24 00:07:29,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:29,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:07:29,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:29,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:07:29,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:07:29,941 INFO L87 Difference]: Start difference. First operand 631 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:30,096 INFO L93 Difference]: Finished difference Result 1127 states and 1847 transitions. [2024-11-24 00:07:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:07:30,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2024-11-24 00:07:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:30,106 INFO L225 Difference]: With dead ends: 1127 [2024-11-24 00:07:30,106 INFO L226 Difference]: Without dead ends: 655 [2024-11-24 00:07:30,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:07:30,111 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 86 mSDsluCounter, 4416 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5315 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:30,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5315 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2024-11-24 00:07:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 650. [2024-11-24 00:07:30,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 521 states have (on average 1.6487523992322457) internal successors, (859), 544 states have internal predecessors, (859), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-24 00:07:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1056 transitions. [2024-11-24 00:07:30,149 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1056 transitions. Word has length 138 [2024-11-24 00:07:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:30,150 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1056 transitions. [2024-11-24 00:07:30,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1056 transitions. [2024-11-24 00:07:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 00:07:30,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:30,155 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:30,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:30,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 00:07:30,356 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:30,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:30,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1643449658, now seen corresponding path program 1 times [2024-11-24 00:07:30,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:30,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309099217] [2024-11-24 00:07:30,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:30,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:30,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309099217] [2024-11-24 00:07:30,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309099217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55752659] [2024-11-24 00:07:30,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:30,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:30,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:30,500 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:30,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:07:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:31,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:07:31,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:07:31,111 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:31,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55752659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:31,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:31,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-24 00:07:31,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148459611] [2024-11-24 00:07:31,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:31,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:07:31,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:31,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:07:31,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:07:31,114 INFO L87 Difference]: Start difference. First operand 650 states and 1056 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:31,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:31,250 INFO L93 Difference]: Finished difference Result 1157 states and 1898 transitions. [2024-11-24 00:07:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:07:31,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2024-11-24 00:07:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:31,259 INFO L225 Difference]: With dead ends: 1157 [2024-11-24 00:07:31,259 INFO L226 Difference]: Without dead ends: 685 [2024-11-24 00:07:31,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:07:31,263 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 95 mSDsluCounter, 4406 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5305 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:31,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5305 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-24 00:07:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 650. [2024-11-24 00:07:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 521 states have (on average 1.6487523992322457) internal successors, (859), 544 states have internal predecessors, (859), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-24 00:07:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1056 transitions. [2024-11-24 00:07:31,300 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1056 transitions. Word has length 139 [2024-11-24 00:07:31,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:31,300 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1056 transitions. [2024-11-24 00:07:31,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1056 transitions. [2024-11-24 00:07:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 00:07:31,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:31,306 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:31,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:31,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:07:31,507 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:31,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash 328320582, now seen corresponding path program 1 times [2024-11-24 00:07:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102163677] [2024-11-24 00:07:31,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102163677] [2024-11-24 00:07:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102163677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312970466] [2024-11-24 00:07:31,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:31,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:31,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:31,676 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:31,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:07:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:32,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:07:32,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:07:32,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:32,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312970466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:32,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:32,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-24 00:07:32,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093765390] [2024-11-24 00:07:32,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:32,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:07:32,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:32,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:07:32,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:07:32,297 INFO L87 Difference]: Start difference. First operand 650 states and 1056 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:32,530 INFO L93 Difference]: Finished difference Result 1142 states and 1872 transitions. [2024-11-24 00:07:32,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:07:32,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2024-11-24 00:07:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:32,538 INFO L225 Difference]: With dead ends: 1142 [2024-11-24 00:07:32,539 INFO L226 Difference]: Without dead ends: 670 [2024-11-24 00:07:32,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:07:32,543 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 113 mSDsluCounter, 5233 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6121 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:32,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6121 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:07:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-11-24 00:07:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 650. [2024-11-24 00:07:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 521 states have (on average 1.6487523992322457) internal successors, (859), 544 states have internal predecessors, (859), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-24 00:07:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1056 transitions. [2024-11-24 00:07:32,578 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1056 transitions. Word has length 139 [2024-11-24 00:07:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:32,578 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1056 transitions. [2024-11-24 00:07:32,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1056 transitions. [2024-11-24 00:07:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 00:07:32,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:32,583 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:32,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:32,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 00:07:32,784 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:32,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1194825439, now seen corresponding path program 1 times [2024-11-24 00:07:32,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:32,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545296012] [2024-11-24 00:07:32,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:07:32,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:32,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545296012] [2024-11-24 00:07:32,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545296012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:32,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351575994] [2024-11-24 00:07:32,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:32,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:32,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:32,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:32,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:07:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:33,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:33,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 00:07:33,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:33,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351575994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:33,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:33,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843083438] [2024-11-24 00:07:33,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:33,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:33,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:33,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:33,544 INFO L87 Difference]: Start difference. First operand 650 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:33,625 INFO L93 Difference]: Finished difference Result 1194 states and 1957 transitions. [2024-11-24 00:07:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:33,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2024-11-24 00:07:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:33,632 INFO L225 Difference]: With dead ends: 1194 [2024-11-24 00:07:33,632 INFO L226 Difference]: Without dead ends: 650 [2024-11-24 00:07:33,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:33,636 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 13 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:33,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2678 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2024-11-24 00:07:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2024-11-24 00:07:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 521 states have (on average 1.6410748560460653) internal successors, (855), 544 states have internal predecessors, (855), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-24 00:07:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1052 transitions. [2024-11-24 00:07:33,670 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1052 transitions. Word has length 139 [2024-11-24 00:07:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:33,671 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1052 transitions. [2024-11-24 00:07:33,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1052 transitions. [2024-11-24 00:07:33,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-24 00:07:33,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:33,676 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:33,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-24 00:07:33,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:07:33,881 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:33,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash 792623262, now seen corresponding path program 1 times [2024-11-24 00:07:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:33,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184642351] [2024-11-24 00:07:33,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:34,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:34,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184642351] [2024-11-24 00:07:34,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184642351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:34,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698720972] [2024-11-24 00:07:34,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:34,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:34,109 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:34,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 00:07:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:34,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:07:34,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 00:07:34,760 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:34,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698720972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:34,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:34,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:07:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687876116] [2024-11-24 00:07:34,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:34,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:34,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:34,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:34,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:34,763 INFO L87 Difference]: Start difference. First operand 650 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:34,866 INFO L93 Difference]: Finished difference Result 1238 states and 2025 transitions. [2024-11-24 00:07:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:07:34,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-24 00:07:34,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:34,875 INFO L225 Difference]: With dead ends: 1238 [2024-11-24 00:07:34,876 INFO L226 Difference]: Without dead ends: 674 [2024-11-24 00:07:34,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:34,882 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 7 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:34,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2651 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-24 00:07:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2024-11-24 00:07:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 545 states have (on average 1.620183486238532) internal successors, (883), 568 states have internal predecessors, (883), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-24 00:07:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1080 transitions. [2024-11-24 00:07:34,930 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1080 transitions. Word has length 140 [2024-11-24 00:07:34,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:34,931 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1080 transitions. [2024-11-24 00:07:34,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-24 00:07:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1080 transitions. [2024-11-24 00:07:34,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 00:07:34,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:34,936 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:34,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 00:07:35,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:07:35,140 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:35,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:35,141 INFO L85 PathProgramCache]: Analyzing trace with hash 143257552, now seen corresponding path program 1 times [2024-11-24 00:07:35,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:35,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963335310] [2024-11-24 00:07:35,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:35,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:35,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:35,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963335310] [2024-11-24 00:07:35,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963335310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:35,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301073007] [2024-11-24 00:07:35,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:35,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:35,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:35,297 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:35,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 00:07:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:35,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:07:35,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:07:35,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:35,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301073007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:35,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:35,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-24 00:07:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54033860] [2024-11-24 00:07:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:35,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:07:35,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:35,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:07:35,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:07:35,950 INFO L87 Difference]: Start difference. First operand 674 states and 1080 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:36,166 INFO L93 Difference]: Finished difference Result 1172 states and 1904 transitions. [2024-11-24 00:07:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:07:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2024-11-24 00:07:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:36,174 INFO L225 Difference]: With dead ends: 1172 [2024-11-24 00:07:36,174 INFO L226 Difference]: Without dead ends: 700 [2024-11-24 00:07:36,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:07:36,178 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 119 mSDsluCounter, 5195 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6077 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:36,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6077 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:36,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2024-11-24 00:07:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 674. [2024-11-24 00:07:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 545 states have (on average 1.620183486238532) internal successors, (883), 568 states have internal predecessors, (883), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2024-11-24 00:07:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1080 transitions. [2024-11-24 00:07:36,215 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1080 transitions. Word has length 141 [2024-11-24 00:07:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:36,215 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1080 transitions. [2024-11-24 00:07:36,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-24 00:07:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1080 transitions. [2024-11-24 00:07:36,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 00:07:36,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:36,221 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:36,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:36,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:07:36,422 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:36,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:36,423 INFO L85 PathProgramCache]: Analyzing trace with hash -84011132, now seen corresponding path program 1 times [2024-11-24 00:07:36,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:36,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963412121] [2024-11-24 00:07:36,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:36,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:07:36,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:36,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963412121] [2024-11-24 00:07:36,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963412121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:36,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832433050] [2024-11-24 00:07:36,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:36,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:36,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:36,564 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:36,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 00:07:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:37,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:07:37,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:07:37,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:37,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832433050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:37,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:37,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 00:07:37,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392076197] [2024-11-24 00:07:37,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:37,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:07:37,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:37,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:07:37,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:37,344 INFO L87 Difference]: Start difference. First operand 674 states and 1080 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:07:38,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:38,113 INFO L93 Difference]: Finished difference Result 1149 states and 1891 transitions. [2024-11-24 00:07:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:07:38,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2024-11-24 00:07:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:38,121 INFO L225 Difference]: With dead ends: 1149 [2024-11-24 00:07:38,122 INFO L226 Difference]: Without dead ends: 682 [2024-11-24 00:07:38,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:38,125 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 856 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:38,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2286 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:07:38,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-24 00:07:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2024-11-24 00:07:38,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 552 states have (on average 1.6213768115942029) internal successors, (895), 575 states have internal predecessors, (895), 99 states have call successors, (99), 27 states have call predecessors, (99), 30 states have return successors, (99), 92 states have call predecessors, (99), 94 states have call successors, (99) [2024-11-24 00:07:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1093 transitions. [2024-11-24 00:07:38,163 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1093 transitions. Word has length 141 [2024-11-24 00:07:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:38,167 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 1093 transitions. [2024-11-24 00:07:38,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:07:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1093 transitions. [2024-11-24 00:07:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-24 00:07:38,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:38,172 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:38,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 00:07:38,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:38,373 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:38,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:38,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1455523656, now seen corresponding path program 1 times [2024-11-24 00:07:38,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:38,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878396826] [2024-11-24 00:07:38,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:07:38,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:38,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878396826] [2024-11-24 00:07:38,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878396826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:38,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649389340] [2024-11-24 00:07:38,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:38,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:38,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:38,508 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:38,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 00:07:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:39,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:07:39,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:07:39,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:39,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649389340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:39,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:39,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 00:07:39,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053701972] [2024-11-24 00:07:39,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:39,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:07:39,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:39,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:07:39,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:39,194 INFO L87 Difference]: Start difference. First operand 682 states and 1093 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:07:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:39,958 INFO L93 Difference]: Finished difference Result 1165 states and 1914 transitions. [2024-11-24 00:07:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:07:39,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2024-11-24 00:07:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:39,970 INFO L225 Difference]: With dead ends: 1165 [2024-11-24 00:07:39,970 INFO L226 Difference]: Without dead ends: 690 [2024-11-24 00:07:39,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:39,977 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 850 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:39,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 2283 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:07:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-24 00:07:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2024-11-24 00:07:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 559 states have (on average 1.6225402504472273) internal successors, (907), 582 states have internal predecessors, (907), 99 states have call successors, (99), 28 states have call predecessors, (99), 31 states have return successors, (100), 92 states have call predecessors, (100), 94 states have call successors, (100) [2024-11-24 00:07:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1106 transitions. [2024-11-24 00:07:40,019 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1106 transitions. Word has length 143 [2024-11-24 00:07:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:40,019 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1106 transitions. [2024-11-24 00:07:40,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:07:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1106 transitions. [2024-11-24 00:07:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-24 00:07:40,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:40,025 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:40,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:40,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:40,226 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:40,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash 138159108, now seen corresponding path program 1 times [2024-11-24 00:07:40,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:40,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952401248] [2024-11-24 00:07:40,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:40,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:07:40,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:40,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952401248] [2024-11-24 00:07:40,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952401248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:40,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453589788] [2024-11-24 00:07:40,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:40,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:40,404 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:40,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 00:07:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:40,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:07:40,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:07:41,104 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:41,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453589788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:41,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:41,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 00:07:41,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965542139] [2024-11-24 00:07:41,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:41,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:07:41,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:41,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:07:41,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:41,106 INFO L87 Difference]: Start difference. First operand 690 states and 1106 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:07:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:41,789 INFO L93 Difference]: Finished difference Result 1181 states and 1937 transitions. [2024-11-24 00:07:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:07:41,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2024-11-24 00:07:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:41,797 INFO L225 Difference]: With dead ends: 1181 [2024-11-24 00:07:41,797 INFO L226 Difference]: Without dead ends: 698 [2024-11-24 00:07:41,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:41,802 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 833 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:41,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2280 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:07:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-24 00:07:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2024-11-24 00:07:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 566 states have (on average 1.6236749116607774) internal successors, (919), 589 states have internal predecessors, (919), 99 states have call successors, (99), 29 states have call predecessors, (99), 32 states have return successors, (101), 92 states have call predecessors, (101), 94 states have call successors, (101) [2024-11-24 00:07:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1119 transitions. [2024-11-24 00:07:41,836 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1119 transitions. Word has length 145 [2024-11-24 00:07:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:41,837 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1119 transitions. [2024-11-24 00:07:41,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:07:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1119 transitions. [2024-11-24 00:07:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 00:07:41,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:41,843 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:41,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 00:07:42,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:42,044 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:42,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:42,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1693970000, now seen corresponding path program 1 times [2024-11-24 00:07:42,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:42,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15742018] [2024-11-24 00:07:42,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:42,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 00:07:42,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15742018] [2024-11-24 00:07:42,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15742018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198173283] [2024-11-24 00:07:42,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:42,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:42,171 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:42,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 00:07:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:42,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:07:42,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:07:42,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:42,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198173283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:42,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:42,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 00:07:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9668338] [2024-11-24 00:07:42,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:42,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:07:42,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:42,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:07:42,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:42,814 INFO L87 Difference]: Start difference. First operand 698 states and 1119 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:07:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:43,506 INFO L93 Difference]: Finished difference Result 1197 states and 1960 transitions. [2024-11-24 00:07:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:07:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2024-11-24 00:07:43,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:43,517 INFO L225 Difference]: With dead ends: 1197 [2024-11-24 00:07:43,520 INFO L226 Difference]: Without dead ends: 706 [2024-11-24 00:07:43,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:43,526 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 838 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:43,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2277 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:07:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-24 00:07:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2024-11-24 00:07:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 573 states have (on average 1.62478184991274) internal successors, (931), 596 states have internal predecessors, (931), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2024-11-24 00:07:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1132 transitions. [2024-11-24 00:07:43,564 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1132 transitions. Word has length 147 [2024-11-24 00:07:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:43,564 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 1132 transitions. [2024-11-24 00:07:43,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:07:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1132 transitions. [2024-11-24 00:07:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-24 00:07:43,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:43,570 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:43,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 00:07:43,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:43,771 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:43,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1647899268, now seen corresponding path program 1 times [2024-11-24 00:07:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802998589] [2024-11-24 00:07:43,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:43,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:43,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802998589] [2024-11-24 00:07:43,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802998589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:43,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942503294] [2024-11-24 00:07:43,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:43,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:43,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:43,927 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:43,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 00:07:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:44,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:07:44,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 00:07:44,732 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:44,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942503294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:44,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:44,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 00:07:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944649949] [2024-11-24 00:07:44,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:44,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:07:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:44,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:07:44,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:44,735 INFO L87 Difference]: Start difference. First operand 706 states and 1132 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 00:07:45,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:45,201 INFO L93 Difference]: Finished difference Result 754 states and 1203 transitions. [2024-11-24 00:07:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:45,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 149 [2024-11-24 00:07:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:45,208 INFO L225 Difference]: With dead ends: 754 [2024-11-24 00:07:45,209 INFO L226 Difference]: Without dead ends: 739 [2024-11-24 00:07:45,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:45,210 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 870 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:45,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1636 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:07:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-11-24 00:07:45,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 708. [2024-11-24 00:07:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 575 states have (on average 1.622608695652174) internal successors, (933), 598 states have internal predecessors, (933), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2024-11-24 00:07:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1134 transitions. [2024-11-24 00:07:45,260 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1134 transitions. Word has length 149 [2024-11-24 00:07:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:45,261 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 1134 transitions. [2024-11-24 00:07:45,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-24 00:07:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1134 transitions. [2024-11-24 00:07:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 00:07:45,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:45,272 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:07:45,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:45,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:45,473 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:45,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1608058497, now seen corresponding path program 1 times [2024-11-24 00:07:45,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:45,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985590556] [2024-11-24 00:07:45,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:45,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:45,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:45,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985590556] [2024-11-24 00:07:45,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985590556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:45,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470875581] [2024-11-24 00:07:45,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:45,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:45,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:45,620 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:45,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 00:07:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:46,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:07:46,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 00:07:46,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:46,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470875581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:46,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:46,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-24 00:07:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393982475] [2024-11-24 00:07:46,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:46,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:07:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:46,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:07:46,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:46,204 INFO L87 Difference]: Start difference. First operand 708 states and 1134 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:07:46,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:46,240 INFO L93 Difference]: Finished difference Result 723 states and 1152 transitions. [2024-11-24 00:07:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:46,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 155 [2024-11-24 00:07:46,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:46,247 INFO L225 Difference]: With dead ends: 723 [2024-11-24 00:07:46,247 INFO L226 Difference]: Without dead ends: 708 [2024-11-24 00:07:46,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:46,249 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 0 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:46,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3600 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-24 00:07:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2024-11-24 00:07:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 575 states have (on average 1.6208695652173912) internal successors, (932), 598 states have internal predecessors, (932), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2024-11-24 00:07:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1133 transitions. [2024-11-24 00:07:46,285 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1133 transitions. Word has length 155 [2024-11-24 00:07:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:46,285 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 1133 transitions. [2024-11-24 00:07:46,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:07:46,286 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1133 transitions. [2024-11-24 00:07:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 00:07:46,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:46,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:46,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-24 00:07:46,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:46,492 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:46,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash -758771788, now seen corresponding path program 1 times [2024-11-24 00:07:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:46,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976811702] [2024-11-24 00:07:46,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 00:07:46,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976811702] [2024-11-24 00:07:46,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976811702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77781967] [2024-11-24 00:07:46,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:46,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:46,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:46,741 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:46,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-24 00:07:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:47,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:07:47,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 00:07:47,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:47,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77781967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:47,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:47,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-24 00:07:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716753193] [2024-11-24 00:07:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:47,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:47,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:47,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:47,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:07:47,333 INFO L87 Difference]: Start difference. First operand 708 states and 1133 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:07:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:47,406 INFO L93 Difference]: Finished difference Result 1390 states and 2236 transitions. [2024-11-24 00:07:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:47,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2024-11-24 00:07:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:47,413 INFO L225 Difference]: With dead ends: 1390 [2024-11-24 00:07:47,413 INFO L226 Difference]: Without dead ends: 677 [2024-11-24 00:07:47,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:07:47,417 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 7 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:47,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2678 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:47,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-24 00:07:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2024-11-24 00:07:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 547 states have (on average 1.6197440585009142) internal successors, (886), 568 states have internal predecessors, (886), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2024-11-24 00:07:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1083 transitions. [2024-11-24 00:07:47,449 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1083 transitions. Word has length 166 [2024-11-24 00:07:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:47,449 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1083 transitions. [2024-11-24 00:07:47,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:07:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1083 transitions. [2024-11-24 00:07:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-24 00:07:47,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:47,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:47,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-24 00:07:47,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 00:07:47,657 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:47,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:47,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1703842135, now seen corresponding path program 1 times [2024-11-24 00:07:47,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:47,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459180628] [2024-11-24 00:07:47,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:47,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 00:07:47,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459180628] [2024-11-24 00:07:47,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459180628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744959668] [2024-11-24 00:07:47,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:47,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:47,891 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:47,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 00:07:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:48,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:07:48,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:07:48,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744959668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:48,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-24 00:07:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977482735] [2024-11-24 00:07:48,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:48,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:07:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:48,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:07:48,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:48,501 INFO L87 Difference]: Start difference. First operand 677 states and 1083 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 00:07:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:48,624 INFO L93 Difference]: Finished difference Result 1323 states and 2130 transitions. [2024-11-24 00:07:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:07:48,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 168 [2024-11-24 00:07:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:48,631 INFO L225 Difference]: With dead ends: 1323 [2024-11-24 00:07:48,632 INFO L226 Difference]: Without dead ends: 677 [2024-11-24 00:07:48,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:48,635 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 119 mSDsluCounter, 4439 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5352 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:48,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5352 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-24 00:07:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 656. [2024-11-24 00:07:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 526 states have (on average 1.6197718631178708) internal successors, (852), 547 states have internal predecessors, (852), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2024-11-24 00:07:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1049 transitions. [2024-11-24 00:07:48,671 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1049 transitions. Word has length 168 [2024-11-24 00:07:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:48,672 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1049 transitions. [2024-11-24 00:07:48,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 00:07:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1049 transitions. [2024-11-24 00:07:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-24 00:07:48,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:48,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:48,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 00:07:48,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 00:07:48,913 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:48,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:48,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1269049550, now seen corresponding path program 1 times [2024-11-24 00:07:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:48,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891112284] [2024-11-24 00:07:48,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:48,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:49,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:49,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891112284] [2024-11-24 00:07:49,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891112284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12447644] [2024-11-24 00:07:49,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:49,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:49,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:49,232 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:49,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 00:07:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:49,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:07:49,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:07:49,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:49,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12447644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:49,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:49,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-24 00:07:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757441185] [2024-11-24 00:07:49,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:49,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:49,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:49,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:49,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:49,873 INFO L87 Difference]: Start difference. First operand 656 states and 1049 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:07:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:50,030 INFO L93 Difference]: Finished difference Result 1305 states and 2100 transitions. [2024-11-24 00:07:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:50,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 170 [2024-11-24 00:07:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:50,037 INFO L225 Difference]: With dead ends: 1305 [2024-11-24 00:07:50,037 INFO L226 Difference]: Without dead ends: 680 [2024-11-24 00:07:50,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:07:50,041 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 128 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:50,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2557 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-24 00:07:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 656. [2024-11-24 00:07:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 526 states have (on average 1.61787072243346) internal successors, (851), 547 states have internal predecessors, (851), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2024-11-24 00:07:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1048 transitions. [2024-11-24 00:07:50,077 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1048 transitions. Word has length 170 [2024-11-24 00:07:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:50,077 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1048 transitions. [2024-11-24 00:07:50,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:07:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1048 transitions. [2024-11-24 00:07:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-24 00:07:50,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:50,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:50,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:50,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:07:50,284 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:50,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:50,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1869888929, now seen corresponding path program 1 times [2024-11-24 00:07:50,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:50,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177936952] [2024-11-24 00:07:50,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:50,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 00:07:50,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:50,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177936952] [2024-11-24 00:07:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177936952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:50,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:50,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:07:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083831257] [2024-11-24 00:07:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:50,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:07:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:50,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:07:50,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:07:50,428 INFO L87 Difference]: Start difference. First operand 656 states and 1048 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:07:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:50,490 INFO L93 Difference]: Finished difference Result 1240 states and 2009 transitions. [2024-11-24 00:07:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:50,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2024-11-24 00:07:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:50,498 INFO L225 Difference]: With dead ends: 1240 [2024-11-24 00:07:50,499 INFO L226 Difference]: Without dead ends: 616 [2024-11-24 00:07:50,501 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 [2024-11-24 00:07:50,503 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 8 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:50,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2675 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:50,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-24 00:07:50,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2024-11-24 00:07:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 489 states have (on average 1.6114519427402862) internal successors, (788), 508 states have internal predecessors, (788), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2024-11-24 00:07:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 981 transitions. [2024-11-24 00:07:50,533 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 981 transitions. Word has length 171 [2024-11-24 00:07:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:50,534 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 981 transitions. [2024-11-24 00:07:50,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:07:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 981 transitions. [2024-11-24 00:07:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-24 00:07:50,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:50,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:50,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 00:07:50,539 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:50,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:50,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1153936034, now seen corresponding path program 1 times [2024-11-24 00:07:50,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:50,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681304705] [2024-11-24 00:07:50,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 00:07:50,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:50,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681304705] [2024-11-24 00:07:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681304705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:50,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:50,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:07:50,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951874732] [2024-11-24 00:07:50,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:50,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:07:50,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:50,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:07:50,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:07:50,794 INFO L87 Difference]: Start difference. First operand 616 states and 981 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 00:07:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:50,901 INFO L93 Difference]: Finished difference Result 1143 states and 1848 transitions. [2024-11-24 00:07:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:07:50,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2024-11-24 00:07:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:50,908 INFO L225 Difference]: With dead ends: 1143 [2024-11-24 00:07:50,908 INFO L226 Difference]: Without dead ends: 602 [2024-11-24 00:07:50,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:50,912 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 88 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:50,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5178 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-24 00:07:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2024-11-24 00:07:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 475 states have (on average 1.6063157894736841) internal successors, (763), 494 states have internal predecessors, (763), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2024-11-24 00:07:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 956 transitions. [2024-11-24 00:07:50,976 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 956 transitions. Word has length 172 [2024-11-24 00:07:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:50,977 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 956 transitions. [2024-11-24 00:07:50,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 00:07:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 956 transitions. [2024-11-24 00:07:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-24 00:07:50,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:50,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:50,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-24 00:07:50,981 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:50,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:50,982 INFO L85 PathProgramCache]: Analyzing trace with hash 428892512, now seen corresponding path program 1 times [2024-11-24 00:07:50,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:50,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628281249] [2024-11-24 00:07:50,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:50,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:51,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:51,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628281249] [2024-11-24 00:07:51,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628281249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:51,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:51,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:07:51,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296090317] [2024-11-24 00:07:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:51,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:07:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:51,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:07:51,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:07:51,388 INFO L87 Difference]: Start difference. First operand 602 states and 956 transitions. Second operand has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 00:07:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:51,626 INFO L93 Difference]: Finished difference Result 1170 states and 1876 transitions. [2024-11-24 00:07:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:07:51,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 173 [2024-11-24 00:07:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:51,633 INFO L225 Difference]: With dead ends: 1170 [2024-11-24 00:07:51,633 INFO L226 Difference]: Without dead ends: 593 [2024-11-24 00:07:51,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:07:51,636 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 45 mSDsluCounter, 5809 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6645 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:51,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6645 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:07:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-24 00:07:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2024-11-24 00:07:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 466 states have (on average 1.6051502145922747) internal successors, (748), 485 states have internal predecessors, (748), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2024-11-24 00:07:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 941 transitions. [2024-11-24 00:07:51,664 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 941 transitions. Word has length 173 [2024-11-24 00:07:51,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:51,665 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 941 transitions. [2024-11-24 00:07:51,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 00:07:51,665 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 941 transitions. [2024-11-24 00:07:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 00:07:51,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:51,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:51,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-24 00:07:51,669 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:51,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:51,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1123096167, now seen corresponding path program 1 times [2024-11-24 00:07:51,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:51,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805647957] [2024-11-24 00:07:51,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:07:52,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:52,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805647957] [2024-11-24 00:07:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805647957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:52,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:52,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:07:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188636489] [2024-11-24 00:07:52,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:52,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:07:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:52,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:07:52,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:07:52,106 INFO L87 Difference]: Start difference. First operand 593 states and 941 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 00:07:52,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:52,310 INFO L93 Difference]: Finished difference Result 1102 states and 1782 transitions. [2024-11-24 00:07:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:07:52,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 174 [2024-11-24 00:07:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:52,317 INFO L225 Difference]: With dead ends: 1102 [2024-11-24 00:07:52,318 INFO L226 Difference]: Without dead ends: 587 [2024-11-24 00:07:52,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:07:52,321 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 31 mSDsluCounter, 5871 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:52,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6716 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-24 00:07:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2024-11-24 00:07:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 460 states have (on average 1.6108695652173912) internal successors, (741), 479 states have internal predecessors, (741), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2024-11-24 00:07:52,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 934 transitions. [2024-11-24 00:07:52,349 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 934 transitions. Word has length 174 [2024-11-24 00:07:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:52,350 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 934 transitions. [2024-11-24 00:07:52,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 00:07:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 934 transitions. [2024-11-24 00:07:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-24 00:07:52,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:52,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:52,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 00:07:52,354 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:52,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2108722085, now seen corresponding path program 1 times [2024-11-24 00:07:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083986512] [2024-11-24 00:07:52,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 00:07:52,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083986512] [2024-11-24 00:07:52,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083986512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202393744] [2024-11-24 00:07:52,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:52,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:52,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:52,881 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:52,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-24 00:07:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:53,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:07:53,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-24 00:07:53,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202393744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:53,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:53,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-24 00:07:53,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575182191] [2024-11-24 00:07:53,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:53,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:07:53,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:53,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:07:53,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:07:53,772 INFO L87 Difference]: Start difference. First operand 587 states and 934 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-24 00:07:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:58,206 INFO L93 Difference]: Finished difference Result 1923 states and 3164 transitions. [2024-11-24 00:07:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:07:58,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 174 [2024-11-24 00:07:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:58,220 INFO L225 Difference]: With dead ends: 1923 [2024-11-24 00:07:58,221 INFO L226 Difference]: Without dead ends: 1422 [2024-11-24 00:07:58,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:07:58,225 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 2327 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 4695 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 5206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:58,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2410 Valid, 2762 Invalid, 5206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [511 Valid, 4695 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-24 00:07:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2024-11-24 00:07:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1308. [2024-11-24 00:07:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1027 states have (on average 1.6475170399221033) internal successors, (1692), 1066 states have internal predecessors, (1692), 213 states have call successors, (213), 62 states have call predecessors, (213), 67 states have return successors, (232), 205 states have call predecessors, (232), 208 states have call successors, (232) [2024-11-24 00:07:58,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2137 transitions. [2024-11-24 00:07:58,306 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2137 transitions. Word has length 174 [2024-11-24 00:07:58,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:58,307 INFO L471 AbstractCegarLoop]: Abstraction has 1308 states and 2137 transitions. [2024-11-24 00:07:58,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-24 00:07:58,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2137 transitions. [2024-11-24 00:07:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-24 00:07:58,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:58,311 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:58,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-24 00:07:58,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:58,516 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:58,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash 128787045, now seen corresponding path program 1 times [2024-11-24 00:07:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:58,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369702309] [2024-11-24 00:07:58,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:58,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 00:07:59,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369702309] [2024-11-24 00:07:59,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369702309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517754267] [2024-11-24 00:07:59,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:59,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:59,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:59,089 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:59,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-24 00:07:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:59,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:07:59,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-24 00:07:59,947 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:07:59,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517754267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:59,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:07:59,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 00:07:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347038562] [2024-11-24 00:07:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:59,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:07:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:59,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:07:59,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:07:59,949 INFO L87 Difference]: Start difference. First operand 1308 states and 2137 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-24 00:08:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:03,320 INFO L93 Difference]: Finished difference Result 2788 states and 4597 transitions. [2024-11-24 00:08:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:08:03,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 176 [2024-11-24 00:08:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:03,333 INFO L225 Difference]: With dead ends: 2788 [2024-11-24 00:08:03,333 INFO L226 Difference]: Without dead ends: 1566 [2024-11-24 00:08:03,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:08:03,339 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 2079 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 3818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:03,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 2031 Invalid, 3818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-24 00:08:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-11-24 00:08:03,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1379. [2024-11-24 00:08:03,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1079 states have (on average 1.6348470806302131) internal successors, (1764), 1124 states have internal predecessors, (1764), 221 states have call successors, (221), 67 states have call predecessors, (221), 78 states have return successors, (258), 213 states have call predecessors, (258), 216 states have call successors, (258) [2024-11-24 00:08:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2243 transitions. [2024-11-24 00:08:03,420 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2243 transitions. Word has length 176 [2024-11-24 00:08:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:03,420 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 2243 transitions. [2024-11-24 00:08:03,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-24 00:08:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2243 transitions. [2024-11-24 00:08:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-24 00:08:03,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:03,425 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:03,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-24 00:08:03,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:03,630 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:03,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1045457829, now seen corresponding path program 1 times [2024-11-24 00:08:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562721761] [2024-11-24 00:08:03,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:03,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 00:08:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562721761] [2024-11-24 00:08:04,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562721761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138826815] [2024-11-24 00:08:04,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:04,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:04,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:04,184 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:04,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-24 00:08:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:04,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 00:08:04,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-24 00:08:04,981 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:08:04,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138826815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:04,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:08:04,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:08:04,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661074969] [2024-11-24 00:08:04,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:04,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:08:04,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:04,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:08:04,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:08:04,984 INFO L87 Difference]: Start difference. First operand 1379 states and 2243 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-24 00:08:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:06,277 INFO L93 Difference]: Finished difference Result 2656 states and 4364 transitions. [2024-11-24 00:08:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:08:06,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2024-11-24 00:08:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:06,296 INFO L225 Difference]: With dead ends: 2656 [2024-11-24 00:08:06,297 INFO L226 Difference]: Without dead ends: 1363 [2024-11-24 00:08:06,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:08:06,307 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 1256 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:06,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 320 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:08:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2024-11-24 00:08:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2024-11-24 00:08:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1069 states have (on average 1.6304957904583723) internal successors, (1743), 1113 states have internal predecessors, (1743), 215 states have call successors, (215), 67 states have call predecessors, (215), 78 states have return successors, (253), 208 states have call predecessors, (253), 211 states have call successors, (253) [2024-11-24 00:08:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2211 transitions. [2024-11-24 00:08:06,425 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2211 transitions. Word has length 181 [2024-11-24 00:08:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:06,426 INFO L471 AbstractCegarLoop]: Abstraction has 1363 states and 2211 transitions. [2024-11-24 00:08:06,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-24 00:08:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2211 transitions. [2024-11-24 00:08:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-24 00:08:06,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:06,430 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:06,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-24 00:08:06,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-24 00:08:06,635 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:06,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1950685950, now seen corresponding path program 1 times [2024-11-24 00:08:06,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:06,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476237431] [2024-11-24 00:08:06,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:06,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-24 00:08:07,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:07,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476237431] [2024-11-24 00:08:07,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476237431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:07,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915366164] [2024-11-24 00:08:07,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:07,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:07,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:07,244 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:07,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-24 00:08:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:07,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:08:07,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-24 00:08:07,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-24 00:08:08,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915366164] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:08,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:08:08,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 15 [2024-11-24 00:08:08,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800663542] [2024-11-24 00:08:08,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:08,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:08:08,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:08,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:08:08,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:08:08,214 INFO L87 Difference]: Start difference. First operand 1363 states and 2211 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-24 00:08:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:08,374 INFO L93 Difference]: Finished difference Result 1383 states and 2235 transitions. [2024-11-24 00:08:08,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:08:08,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2024-11-24 00:08:08,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:08,409 INFO L225 Difference]: With dead ends: 1383 [2024-11-24 00:08:08,409 INFO L226 Difference]: Without dead ends: 1369 [2024-11-24 00:08:08,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:08:08,418 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 0 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:08,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3385 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:08:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2024-11-24 00:08:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1369. [2024-11-24 00:08:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1075 states have (on average 1.6269767441860465) internal successors, (1749), 1119 states have internal predecessors, (1749), 215 states have call successors, (215), 67 states have call predecessors, (215), 78 states have return successors, (253), 208 states have call predecessors, (253), 211 states have call successors, (253) [2024-11-24 00:08:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2217 transitions. [2024-11-24 00:08:08,549 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2217 transitions. Word has length 182 [2024-11-24 00:08:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:08,550 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2217 transitions. [2024-11-24 00:08:08,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-24 00:08:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2217 transitions. [2024-11-24 00:08:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-24 00:08:08,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:08,555 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:08:08,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-24 00:08:08,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:08,759 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:08,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:08,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1858183571, now seen corresponding path program 1 times [2024-11-24 00:08:08,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:08,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339345364] [2024-11-24 00:08:08,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:08,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-24 00:08:09,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:09,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339345364] [2024-11-24 00:08:09,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339345364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:09,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422935222] [2024-11-24 00:08:09,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:09,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:09,388 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:09,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-24 00:08:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:10,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:08:10,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 32 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-24 00:08:10,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-24 00:08:10,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422935222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:10,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:10,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-24 00:08:10,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821970952] [2024-11-24 00:08:10,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:10,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:08:10,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:10,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:08:10,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:08:10,859 INFO L87 Difference]: Start difference. First operand 1369 states and 2217 transitions. Second operand has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 12 states have internal predecessors, (265), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2024-11-24 00:08:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:24,468 INFO L93 Difference]: Finished difference Result 10220 states and 17223 transitions. [2024-11-24 00:08:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-24 00:08:24,469 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 12 states have internal predecessors, (265), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) Word has length 271 [2024-11-24 00:08:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:24,575 INFO L225 Difference]: With dead ends: 10220 [2024-11-24 00:08:24,575 INFO L226 Difference]: Without dead ends: 8937 [2024-11-24 00:08:24,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=653, Invalid=4177, Unknown=0, NotChecked=0, Total=4830 [2024-11-24 00:08:24,596 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 6313 mSDsluCounter, 6425 mSDsCounter, 0 mSdLazyCounter, 15004 mSolverCounterSat, 2003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6395 SdHoareTripleChecker+Valid, 7234 SdHoareTripleChecker+Invalid, 17007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2003 IncrementalHoareTripleChecker+Valid, 15004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:24,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6395 Valid, 7234 Invalid, 17007 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2003 Valid, 15004 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2024-11-24 00:08:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2024-11-24 00:08:25,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 7759. [2024-11-24 00:08:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7759 states, 5973 states have (on average 1.6050560857190692) internal successors, (9587), 6237 states have internal predecessors, (9587), 1292 states have call successors, (1292), 324 states have call predecessors, (1292), 493 states have return successors, (1991), 1289 states have call predecessors, (1991), 1288 states have call successors, (1991) [2024-11-24 00:08:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7759 states to 7759 states and 12870 transitions. [2024-11-24 00:08:25,645 INFO L78 Accepts]: Start accepts. Automaton has 7759 states and 12870 transitions. Word has length 271 [2024-11-24 00:08:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:25,646 INFO L471 AbstractCegarLoop]: Abstraction has 7759 states and 12870 transitions. [2024-11-24 00:08:25,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 12 states have internal predecessors, (265), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2024-11-24 00:08:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7759 states and 12870 transitions. [2024-11-24 00:08:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-24 00:08:25,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:25,684 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:08:25,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-24 00:08:25,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:25,885 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:25,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:25,886 INFO L85 PathProgramCache]: Analyzing trace with hash -270729276, now seen corresponding path program 1 times [2024-11-24 00:08:25,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:25,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842264943] [2024-11-24 00:08:25,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:25,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-24 00:08:26,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:26,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842264943] [2024-11-24 00:08:26,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842264943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:26,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:08:26,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:08:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793215078] [2024-11-24 00:08:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:26,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:08:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:26,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:08:26,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:08:26,472 INFO L87 Difference]: Start difference. First operand 7759 states and 12870 transitions. Second operand has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-24 00:08:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:27,002 INFO L93 Difference]: Finished difference Result 15441 states and 25648 transitions. [2024-11-24 00:08:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:08:27,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 273 [2024-11-24 00:08:27,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:27,064 INFO L225 Difference]: With dead ends: 15441 [2024-11-24 00:08:27,064 INFO L226 Difference]: Without dead ends: 7750 [2024-11-24 00:08:27,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:08:27,097 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 41 mSDsluCounter, 4976 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5814 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:27,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5814 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:08:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2024-11-24 00:08:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 7750. [2024-11-24 00:08:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 5966 states have (on average 1.604592691920885) internal successors, (9573), 6229 states have internal predecessors, (9573), 1292 states have call successors, (1292), 324 states have call predecessors, (1292), 491 states have return successors, (1987), 1288 states have call predecessors, (1987), 1288 states have call successors, (1987) [2024-11-24 00:08:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 12852 transitions. [2024-11-24 00:08:27,819 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 12852 transitions. Word has length 273 [2024-11-24 00:08:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:27,820 INFO L471 AbstractCegarLoop]: Abstraction has 7750 states and 12852 transitions. [2024-11-24 00:08:27,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-24 00:08:27,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 12852 transitions. [2024-11-24 00:08:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-24 00:08:27,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:27,841 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:08:27,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-24 00:08:27,842 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:27,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:27,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1742758753, now seen corresponding path program 1 times [2024-11-24 00:08:27,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:27,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144263744] [2024-11-24 00:08:27,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-24 00:08:28,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144263744] [2024-11-24 00:08:28,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144263744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503570669] [2024-11-24 00:08:28,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:28,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:28,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:28,326 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:28,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-24 00:08:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:28,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:08:28,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-24 00:08:29,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:08:29,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503570669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:29,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:08:29,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-24 00:08:29,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173080133] [2024-11-24 00:08:29,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:29,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:08:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:29,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:08:29,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:08:29,075 INFO L87 Difference]: Start difference. First operand 7750 states and 12852 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-24 00:08:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:29,463 INFO L93 Difference]: Finished difference Result 10153 states and 16795 transitions. [2024-11-24 00:08:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:08:29,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 274 [2024-11-24 00:08:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:29,495 INFO L225 Difference]: With dead ends: 10153 [2024-11-24 00:08:29,495 INFO L226 Difference]: Without dead ends: 2443 [2024-11-24 00:08:29,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:08:29,537 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 1 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:29,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2490 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:08:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2024-11-24 00:08:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2443. [2024-11-24 00:08:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 1908 states have (on average 1.6048218029350105) internal successors, (3062), 1990 states have internal predecessors, (3062), 377 states have call successors, (377), 112 states have call predecessors, (377), 157 states have return successors, (546), 364 states have call predecessors, (546), 373 states have call successors, (546) [2024-11-24 00:08:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3985 transitions. [2024-11-24 00:08:29,848 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3985 transitions. Word has length 274 [2024-11-24 00:08:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:29,849 INFO L471 AbstractCegarLoop]: Abstraction has 2443 states and 3985 transitions. [2024-11-24 00:08:29,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-24 00:08:29,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3985 transitions. [2024-11-24 00:08:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-24 00:08:29,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:29,858 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:08:29,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-24 00:08:30,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 00:08:30,059 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:30,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:30,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1299286093, now seen corresponding path program 1 times [2024-11-24 00:08:30,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:30,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677836450] [2024-11-24 00:08:30,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:30,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-24 00:08:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:30,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677836450] [2024-11-24 00:08:30,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677836450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:30,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229179125] [2024-11-24 00:08:30,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:30,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:30,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:30,698 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:30,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-24 00:08:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:31,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:08:31,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-24 00:08:31,416 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:08:31,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229179125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:31,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:08:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-24 00:08:31,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030924449] [2024-11-24 00:08:31,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:31,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:08:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:31,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:08:31,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:08:31,418 INFO L87 Difference]: Start difference. First operand 2443 states and 3985 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-24 00:08:31,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:31,530 INFO L93 Difference]: Finished difference Result 4822 states and 7915 transitions. [2024-11-24 00:08:31,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:08:31,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 277 [2024-11-24 00:08:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:31,553 INFO L225 Difference]: With dead ends: 4822 [2024-11-24 00:08:31,553 INFO L226 Difference]: Without dead ends: 2463 [2024-11-24 00:08:31,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:08:31,565 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 0 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:31,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4188 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:08:31,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2024-11-24 00:08:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2457. [2024-11-24 00:08:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 1918 states have (on average 1.6016684045881127) internal successors, (3072), 2002 states have internal predecessors, (3072), 377 states have call successors, (377), 112 states have call predecessors, (377), 161 states have return successors, (550), 366 states have call predecessors, (550), 373 states have call successors, (550) [2024-11-24 00:08:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3999 transitions. [2024-11-24 00:08:31,760 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3999 transitions. Word has length 277 [2024-11-24 00:08:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:31,761 INFO L471 AbstractCegarLoop]: Abstraction has 2457 states and 3999 transitions. [2024-11-24 00:08:31,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-24 00:08:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3999 transitions. [2024-11-24 00:08:31,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2024-11-24 00:08:31,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:31,767 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:08:31,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-24 00:08:31,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 00:08:31,968 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:31,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1174090949, now seen corresponding path program 1 times [2024-11-24 00:08:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:31,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578042023] [2024-11-24 00:08:31,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-24 00:08:32,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:32,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578042023] [2024-11-24 00:08:32,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578042023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:32,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307647229] [2024-11-24 00:08:32,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:32,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:32,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:32,268 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:32,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-24 00:08:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:32,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 2453 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:08:32,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-24 00:08:33,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 24 proven. 35 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-24 00:08:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307647229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:34,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 11] total 18 [2024-11-24 00:08:34,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561095827] [2024-11-24 00:08:34,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:34,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:08:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:34,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:08:34,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:08:34,477 INFO L87 Difference]: Start difference. First operand 2457 states and 3999 transitions. Second operand has 18 states, 18 states have (on average 16.333333333333332) internal successors, (294), 18 states have internal predecessors, (294), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2024-11-24 00:08:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:49,719 INFO L93 Difference]: Finished difference Result 12466 states and 20521 transitions. [2024-11-24 00:08:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-24 00:08:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.333333333333332) internal successors, (294), 18 states have internal predecessors, (294), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) Word has length 283 [2024-11-24 00:08:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:49,791 INFO L225 Difference]: With dead ends: 12466 [2024-11-24 00:08:49,792 INFO L226 Difference]: Without dead ends: 9537 [2024-11-24 00:08:49,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 608 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6398 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2332, Invalid=14180, Unknown=0, NotChecked=0, Total=16512 [2024-11-24 00:08:49,825 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 15530 mSDsluCounter, 6082 mSDsCounter, 0 mSdLazyCounter, 11381 mSolverCounterSat, 4961 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15567 SdHoareTripleChecker+Valid, 6890 SdHoareTripleChecker+Invalid, 16342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4961 IncrementalHoareTripleChecker+Valid, 11381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:49,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15567 Valid, 6890 Invalid, 16342 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4961 Valid, 11381 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2024-11-24 00:08:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9537 states. [2024-11-24 00:08:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9537 to 9081. [2024-11-24 00:08:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9081 states, 6888 states have (on average 1.5540069686411149) internal successors, (10704), 7248 states have internal predecessors, (10704), 1583 states have call successors, (1583), 460 states have call predecessors, (1583), 609 states have return successors, (2251), 1564 states have call predecessors, (2251), 1579 states have call successors, (2251) [2024-11-24 00:08:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9081 states to 9081 states and 14538 transitions. [2024-11-24 00:08:50,789 INFO L78 Accepts]: Start accepts. Automaton has 9081 states and 14538 transitions. Word has length 283 [2024-11-24 00:08:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:50,791 INFO L471 AbstractCegarLoop]: Abstraction has 9081 states and 14538 transitions. [2024-11-24 00:08:50,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.333333333333332) internal successors, (294), 18 states have internal predecessors, (294), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2024-11-24 00:08:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 9081 states and 14538 transitions. [2024-11-24 00:08:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-24 00:08:50,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:50,797 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:50,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-24 00:08:50,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 00:08:50,998 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:50,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash 299460396, now seen corresponding path program 1 times [2024-11-24 00:08:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779907566] [2024-11-24 00:08:50,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-24 00:08:51,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779907566] [2024-11-24 00:08:51,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779907566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697396129] [2024-11-24 00:08:51,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:51,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:51,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:51,892 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:51,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-24 00:08:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:52,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 2088 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 00:08:52,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-24 00:08:52,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-24 00:08:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697396129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:53,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2024-11-24 00:08:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184392858] [2024-11-24 00:08:53,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:53,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 00:08:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:53,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 00:08:53,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:08:53,935 INFO L87 Difference]: Start difference. First operand 9081 states and 14538 transitions. Second operand has 23 states, 23 states have (on average 13.565217391304348) internal successors, (312), 19 states have internal predecessors, (312), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2024-11-24 00:09:05,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:09:05,394 INFO L93 Difference]: Finished difference Result 29431 states and 47754 transitions. [2024-11-24 00:09:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:09:05,395 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.565217391304348) internal successors, (312), 19 states have internal predecessors, (312), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) Word has length 234 [2024-11-24 00:09:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:09:05,545 INFO L225 Difference]: With dead ends: 29431 [2024-11-24 00:09:05,545 INFO L226 Difference]: Without dead ends: 20437 [2024-11-24 00:09:05,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2024-11-24 00:09:05,609 INFO L435 NwaCegarLoop]: 800 mSDtfsCounter, 6375 mSDsluCounter, 8054 mSDsCounter, 0 mSdLazyCounter, 15495 mSolverCounterSat, 1930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6375 SdHoareTripleChecker+Valid, 8854 SdHoareTripleChecker+Invalid, 17425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1930 IncrementalHoareTripleChecker+Valid, 15495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:09:05,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6375 Valid, 8854 Invalid, 17425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1930 Valid, 15495 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-24 00:09:05,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20437 states. [2024-11-24 00:09:07,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20437 to 19815. [2024-11-24 00:09:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19815 states, 14820 states have (on average 1.5486504723346828) internal successors, (22951), 15615 states have internal predecessors, (22951), 3764 states have call successors, (3764), 892 states have call predecessors, (3764), 1230 states have return successors, (5413), 3771 states have call predecessors, (5413), 3760 states have call successors, (5413) [2024-11-24 00:09:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19815 states to 19815 states and 32128 transitions. [2024-11-24 00:09:07,400 INFO L78 Accepts]: Start accepts. Automaton has 19815 states and 32128 transitions. Word has length 234 [2024-11-24 00:09:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:09:07,401 INFO L471 AbstractCegarLoop]: Abstraction has 19815 states and 32128 transitions. [2024-11-24 00:09:07,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.565217391304348) internal successors, (312), 19 states have internal predecessors, (312), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2024-11-24 00:09:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 19815 states and 32128 transitions. [2024-11-24 00:09:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-24 00:09:07,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:09:07,412 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:09:07,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-24 00:09:07,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:09:07,617 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:09:07,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:09:07,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1661670993, now seen corresponding path program 1 times [2024-11-24 00:09:07,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:09:07,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816974653] [2024-11-24 00:09:07,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:09:07,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:09:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:09:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-24 00:09:07,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:09:07,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816974653] [2024-11-24 00:09:07,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816974653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:09:07,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:09:07,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:09:07,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553398764] [2024-11-24 00:09:07,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:09:07,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:09:07,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:09:07,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:09:07,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:09:07,865 INFO L87 Difference]: Start difference. First operand 19815 states and 32128 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-24 00:09:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:09:10,151 INFO L93 Difference]: Finished difference Result 39653 states and 64604 transitions. [2024-11-24 00:09:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:09:10,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 238 [2024-11-24 00:09:10,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:09:10,307 INFO L225 Difference]: With dead ends: 39653 [2024-11-24 00:09:10,307 INFO L226 Difference]: Without dead ends: 19975 [2024-11-24 00:09:10,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:09:10,418 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 0 mSDsluCounter, 3309 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4144 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:09:10,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4144 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:09:10,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19975 states. [2024-11-24 00:09:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19975 to 19927. [2024-11-24 00:09:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19927 states, 14932 states have (on average 1.5423921778730243) internal successors, (23031), 15699 states have internal predecessors, (23031), 3736 states have call successors, (3736), 892 states have call predecessors, (3736), 1258 states have return successors, (5477), 3799 states have call predecessors, (5477), 3732 states have call successors, (5477) [2024-11-24 00:09:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19927 states to 19927 states and 32244 transitions. [2024-11-24 00:09:12,366 INFO L78 Accepts]: Start accepts. Automaton has 19927 states and 32244 transitions. Word has length 238 [2024-11-24 00:09:12,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:09:12,366 INFO L471 AbstractCegarLoop]: Abstraction has 19927 states and 32244 transitions. [2024-11-24 00:09:12,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-24 00:09:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 19927 states and 32244 transitions. [2024-11-24 00:09:12,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-24 00:09:12,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:09:12,375 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:09:12,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-24 00:09:12,375 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:09:12,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:09:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1003755102, now seen corresponding path program 1 times [2024-11-24 00:09:12,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:09:12,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577876093] [2024-11-24 00:09:12,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:09:12,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:09:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:09:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-24 00:09:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:09:12,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577876093] [2024-11-24 00:09:12,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577876093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:09:12,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519901323] [2024-11-24 00:09:12,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:09:12,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:09:12,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:09:12,969 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:09:12,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-24 00:09:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:09:13,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 2561 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:09:13,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:09:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-24 00:09:13,761 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:09:13,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519901323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:09:13,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:09:13,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 00:09:13,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502008390] [2024-11-24 00:09:13,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:09:13,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:09:13,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:09:13,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:09:13,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:09:13,764 INFO L87 Difference]: Start difference. First operand 19927 states and 32244 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-24 00:09:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:09:15,619 INFO L93 Difference]: Finished difference Result 40434 states and 66164 transitions. [2024-11-24 00:09:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:09:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 313 [2024-11-24 00:09:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:09:15,758 INFO L225 Difference]: With dead ends: 40434 [2024-11-24 00:09:15,758 INFO L226 Difference]: Without dead ends: 20647 [2024-11-24 00:09:15,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:09:15,855 INFO L435 NwaCegarLoop]: 777 mSDtfsCounter, 144 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:09:15,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2308 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:09:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20647 states. [2024-11-24 00:09:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20647 to 20551. [2024-11-24 00:09:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20551 states, 15540 states have (on average 1.5572072072072072) internal successors, (24199), 16307 states have internal predecessors, (24199), 3736 states have call successors, (3736), 908 states have call predecessors, (3736), 1274 states have return successors, (5477), 3799 states have call predecessors, (5477), 3732 states have call successors, (5477) [2024-11-24 00:09:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20551 states to 20551 states and 33412 transitions. [2024-11-24 00:09:18,169 INFO L78 Accepts]: Start accepts. Automaton has 20551 states and 33412 transitions. Word has length 313 [2024-11-24 00:09:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:09:18,170 INFO L471 AbstractCegarLoop]: Abstraction has 20551 states and 33412 transitions. [2024-11-24 00:09:18,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-24 00:09:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 20551 states and 33412 transitions. [2024-11-24 00:09:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-24 00:09:18,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:09:18,187 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:09:18,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-24 00:09:18,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:09:18,388 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:09:18,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:09:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1626872957, now seen corresponding path program 1 times [2024-11-24 00:09:18,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:09:18,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849008724] [2024-11-24 00:09:18,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:09:18,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:09:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:09:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-24 00:09:18,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:09:18,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849008724] [2024-11-24 00:09:18,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849008724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:09:18,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78687308] [2024-11-24 00:09:18,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:09:18,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:09:18,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:09:18,845 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:09:18,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff12b6d-da09-4955-93c4-b8b46a58e83c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-24 00:09:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:09:19,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 2119 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:09:19,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:09:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-24 00:09:19,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:09:19,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78687308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:09:19,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:09:19,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-24 00:09:19,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442481326] [2024-11-24 00:09:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:09:19,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:09:19,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:09:19,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:09:19,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:09:19,585 INFO L87 Difference]: Start difference. First operand 20551 states and 33412 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-24 00:09:23,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:09:23,045 INFO L93 Difference]: Finished difference Result 60337 states and 100060 transitions. [2024-11-24 00:09:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:09:23,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 245 [2024-11-24 00:09:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:09:23,300 INFO L225 Difference]: With dead ends: 60337 [2024-11-24 00:09:23,301 INFO L226 Difference]: Without dead ends: 39883 [2024-11-24 00:09:23,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:09:23,411 INFO L435 NwaCegarLoop]: 1253 mSDtfsCounter, 680 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:09:23,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 2083 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:09:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39883 states.