./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_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_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/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_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/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_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/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 8e809cb7921b0f8738511433928ba20d09f78a0d0fe23412d97e6052fa9e13ec --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:55:16,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:55:16,318 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:55:16,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:55:16,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:55:16,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:55:16,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:55:16,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:55:16,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:55:16,365 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:55:16,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:55:16,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:55:16,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:55:16,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:55:16,366 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:55:16,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:55:16,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:55:16,367 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:55:16,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:55:16,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:55:16,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:55:16,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:55:16,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:55:16,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:55:16,368 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:55:16,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:55:16,368 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:55:16,368 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:55:16,368 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:55:16,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:55:16,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:55:16,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:55:16,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:55:16,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:55:16,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:55:16,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:55:16,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:55:16,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:55:16,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:55:16,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:55:16,370 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:55:16,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:55:16,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:55:16,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:55:16,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:55:16,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:55:16,371 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:55:16,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:55:16,371 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_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/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 -> 8e809cb7921b0f8738511433928ba20d09f78a0d0fe23412d97e6052fa9e13ec [2024-11-24 00:55:16,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:55:16,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:55:16,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:55:16,676 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:55:16,676 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:55:16,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2024-11-24 00:55:19,635 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/data/af57c4388/538003501136477e83d6fa09d4721580/FLAGdc2a3afd1 [2024-11-24 00:55:20,090 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:55:20,090 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2024-11-24 00:55:20,125 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/data/af57c4388/538003501136477e83d6fa09d4721580/FLAGdc2a3afd1 [2024-11-24 00:55:20,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/data/af57c4388/538003501136477e83d6fa09d4721580 [2024-11-24 00:55:20,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:55:20,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:55:20,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:55:20,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:55:20,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:55:20,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:55:20" (1/1) ... [2024-11-24 00:55:20,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16fa1b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:20, skipping insertion in model container [2024-11-24 00:55:20,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:55:20" (1/1) ... [2024-11-24 00:55:20,240 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:55:20,448 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_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c[1545,1558] [2024-11-24 00:55:20,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:55:20,918 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:55:20,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-24 00:55:20,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [57] [2024-11-24 00:55:20,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [421] [2024-11-24 00:55:20,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [541] [2024-11-24 00:55:20,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [907] [2024-11-24 00:55:20,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2442] [2024-11-24 00:55:20,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [2533] [2024-11-24 00:55:20,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2714] [2024-11-24 00:55:20,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3375] [2024-11-24 00:55:20,932 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3387] [2024-11-24 00:55:20,935 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_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c[1545,1558] [2024-11-24 00:55:21,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:55:21,097 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:55:21,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21 WrapperNode [2024-11-24 00:55:21,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:55:21,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:55:21,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:55:21,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:55:21,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,182 INFO L138 Inliner]: procedures = 93, calls = 338, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1127 [2024-11-24 00:55:21,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:55:21,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:55:21,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:55:21,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:55:21,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,201 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,230 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-24 00:55:21,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,254 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:55:21,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:55:21,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:55:21,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:55:21,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (1/1) ... [2024-11-24 00:55:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:55:21,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:21,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:55:21,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:55:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:55:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-24 00:55:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-24 00:55:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-24 00:55:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-24 00:55:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-24 00:55:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-24 00:55:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-24 00:55:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-24 00:55:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-24 00:55:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-24 00:55:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-24 00:55:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-24 00:55:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-24 00:55:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-24 00:55:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-24 00:55:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-24 00:55:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-24 00:55:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-24 00:55:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-24 00:55:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-24 00:55:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-24 00:55:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-24 00:55:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-24 00:55:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-24 00:55:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-24 00:55:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-24 00:55:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-24 00:55:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-24 00:55:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-24 00:55:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-24 00:55:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-24 00:55:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-24 00:55:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-24 00:55:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-24 00:55:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-24 00:55:21,414 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 00:55:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 00:55:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 00:55:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 00:55:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 00:55:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 00:55:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 00:55:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-24 00:55:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-24 00:55:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-24 00:55:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-24 00:55:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-24 00:55:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-24 00:55:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-24 00:55:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-24 00:55:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-24 00:55:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:55:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:55:21,417 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-24 00:55:21,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-24 00:55:21,619 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:55:21,621 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:55:23,190 INFO L? ?]: Removed 443 outVars from TransFormulas that were not future-live. [2024-11-24 00:55:23,190 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:55:23,217 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:55:23,217 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:55:23,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:55:23 BoogieIcfgContainer [2024-11-24 00:55:23,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:55:23,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:55:23,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:55:23,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:55:23,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:55:20" (1/3) ... [2024-11-24 00:55:23,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5461c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:55:23, skipping insertion in model container [2024-11-24 00:55:23,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:21" (2/3) ... [2024-11-24 00:55:23,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5461c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:55:23, skipping insertion in model container [2024-11-24 00:55:23,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:55:23" (3/3) ... [2024-11-24 00:55:23,229 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2024-11-24 00:55:23,247 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:55:23,250 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product11.cil.c that has 24 procedures, 553 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:55:23,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:55:23,364 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;@4830b69f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:55:23,364 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:55:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 553 states, 434 states have (on average 1.6981566820276497) internal successors, (737), 455 states have internal predecessors, (737), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-24 00:55:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 00:55:23,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:23,411 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:23,411 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:23,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -118464334, now seen corresponding path program 1 times [2024-11-24 00:55:23,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:23,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194457972] [2024-11-24 00:55:23,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:23,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:24,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:24,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194457972] [2024-11-24 00:55:24,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194457972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:24,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:24,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:55:24,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181445602] [2024-11-24 00:55:24,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:24,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:24,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:24,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:24,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:24,283 INFO L87 Difference]: Start difference. First operand has 553 states, 434 states have (on average 1.6981566820276497) internal successors, (737), 455 states have internal predecessors, (737), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:24,471 INFO L93 Difference]: Finished difference Result 1086 states and 1825 transitions. [2024-11-24 00:55:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:24,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-11-24 00:55:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:24,502 INFO L225 Difference]: With dead ends: 1086 [2024-11-24 00:55:24,502 INFO L226 Difference]: Without dead ends: 545 [2024-11-24 00:55:24,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:24,516 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 5 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:24,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2708 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-24 00:55:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-11-24 00:55:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.6939252336448598) internal successors, (725), 447 states have internal predecessors, (725), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 908 transitions. [2024-11-24 00:55:24,610 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 908 transitions. Word has length 102 [2024-11-24 00:55:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:24,612 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 908 transitions. [2024-11-24 00:55:24,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 908 transitions. [2024-11-24 00:55:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:55:24,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:24,628 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:55:24,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:55:24,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:24,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1984828939, now seen corresponding path program 1 times [2024-11-24 00:55:24,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:24,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372629039] [2024-11-24 00:55:24,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:24,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:24,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372629039] [2024-11-24 00:55:24,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372629039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:24,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:24,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:55:24,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366156293] [2024-11-24 00:55:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:24,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:24,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:24,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:24,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:24,993 INFO L87 Difference]: Start difference. First operand 545 states and 908 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:25,120 INFO L93 Difference]: Finished difference Result 1072 states and 1793 transitions. [2024-11-24 00:55:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-11-24 00:55:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:25,128 INFO L225 Difference]: With dead ends: 1072 [2024-11-24 00:55:25,128 INFO L226 Difference]: Without dead ends: 545 [2024-11-24 00:55:25,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:25,134 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 4 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:25,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2687 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-24 00:55:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-11-24 00:55:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.691588785046729) internal successors, (724), 447 states have internal predecessors, (724), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 907 transitions. [2024-11-24 00:55:25,196 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 907 transitions. Word has length 104 [2024-11-24 00:55:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:25,197 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 907 transitions. [2024-11-24 00:55:25,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 907 transitions. [2024-11-24 00:55:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:55:25,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:25,207 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:25,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:55:25,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:25,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:25,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1181918321, now seen corresponding path program 1 times [2024-11-24 00:55:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:25,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073960089] [2024-11-24 00:55:25,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:25,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:25,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073960089] [2024-11-24 00:55:25,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073960089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:25,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:25,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:55:25,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892182006] [2024-11-24 00:55:25,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:25,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:25,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:25,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:25,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:25,475 INFO L87 Difference]: Start difference. First operand 545 states and 907 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:25,580 INFO L93 Difference]: Finished difference Result 1072 states and 1792 transitions. [2024-11-24 00:55:25,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:25,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-11-24 00:55:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:25,588 INFO L225 Difference]: With dead ends: 1072 [2024-11-24 00:55:25,588 INFO L226 Difference]: Without dead ends: 545 [2024-11-24 00:55:25,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:25,594 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 3 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:25,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2687 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:25,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-24 00:55:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-11-24 00:55:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.689252336448598) internal successors, (723), 447 states have internal predecessors, (723), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:25,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 906 transitions. [2024-11-24 00:55:25,635 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 906 transitions. Word has length 105 [2024-11-24 00:55:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:25,637 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 906 transitions. [2024-11-24 00:55:25,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:25,638 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 906 transitions. [2024-11-24 00:55:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:55:25,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:25,644 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:25,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:55:25,644 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:25,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash -153032305, now seen corresponding path program 1 times [2024-11-24 00:55:25,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:25,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595104902] [2024-11-24 00:55:25,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:25,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:25,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595104902] [2024-11-24 00:55:25,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595104902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:25,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:25,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:55:25,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614863448] [2024-11-24 00:55:25,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:25,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:25,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:25,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:25,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:25,903 INFO L87 Difference]: Start difference. First operand 545 states and 906 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:25,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:25,978 INFO L93 Difference]: Finished difference Result 1072 states and 1791 transitions. [2024-11-24 00:55:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:25,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-11-24 00:55:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:25,986 INFO L225 Difference]: With dead ends: 1072 [2024-11-24 00:55:25,986 INFO L226 Difference]: Without dead ends: 545 [2024-11-24 00:55:25,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:25,990 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 2 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:25,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2687 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-24 00:55:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-11-24 00:55:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.6869158878504673) internal successors, (722), 447 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 905 transitions. [2024-11-24 00:55:26,034 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 905 transitions. Word has length 106 [2024-11-24 00:55:26,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:26,034 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 905 transitions. [2024-11-24 00:55:26,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 905 transitions. [2024-11-24 00:55:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:55:26,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:26,041 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:26,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:55:26,041 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:26,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2091466387, now seen corresponding path program 1 times [2024-11-24 00:55:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006805061] [2024-11-24 00:55:26,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:26,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006805061] [2024-11-24 00:55:26,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006805061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:26,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:26,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:55:26,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375356745] [2024-11-24 00:55:26,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:26,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:26,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:26,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:26,279 INFO L87 Difference]: Start difference. First operand 545 states and 905 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:26,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:26,350 INFO L93 Difference]: Finished difference Result 1072 states and 1790 transitions. [2024-11-24 00:55:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:26,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2024-11-24 00:55:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:26,358 INFO L225 Difference]: With dead ends: 1072 [2024-11-24 00:55:26,358 INFO L226 Difference]: Without dead ends: 545 [2024-11-24 00:55:26,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:26,364 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 1 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:26,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2687 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-24 00:55:26,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-11-24 00:55:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.6845794392523366) internal successors, (721), 447 states have internal predecessors, (721), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 904 transitions. [2024-11-24 00:55:26,422 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 904 transitions. Word has length 107 [2024-11-24 00:55:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:26,422 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 904 transitions. [2024-11-24 00:55:26,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:26,423 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 904 transitions. [2024-11-24 00:55:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 00:55:26,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:26,429 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:55:26,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:55:26,429 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:26,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash -929714925, now seen corresponding path program 1 times [2024-11-24 00:55:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330638857] [2024-11-24 00:55:26,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330638857] [2024-11-24 00:55:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330638857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:26,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:26,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:55:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88936554] [2024-11-24 00:55:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:26,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:55:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:26,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:55:26,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:26,762 INFO L87 Difference]: Start difference. First operand 545 states and 904 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-24 00:55:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:26,898 INFO L93 Difference]: Finished difference Result 1038 states and 1722 transitions. [2024-11-24 00:55:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:55:26,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-24 00:55:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:26,905 INFO L225 Difference]: With dead ends: 1038 [2024-11-24 00:55:26,905 INFO L226 Difference]: Without dead ends: 560 [2024-11-24 00:55:26,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:55:26,910 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 91 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5283 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:26,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5283 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-24 00:55:26,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 558. [2024-11-24 00:55:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 438 states have (on average 1.6803652968036529) internal successors, (736), 459 states have internal predecessors, (736), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2024-11-24 00:55:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 923 transitions. [2024-11-24 00:55:26,975 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 923 transitions. Word has length 108 [2024-11-24 00:55:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:26,976 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 923 transitions. [2024-11-24 00:55:26,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-24 00:55:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 923 transitions. [2024-11-24 00:55:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 00:55:26,981 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:26,981 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:55:26,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:55:26,983 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:26,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1900005932, now seen corresponding path program 1 times [2024-11-24 00:55:26,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:26,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696299564] [2024-11-24 00:55:26,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696299564] [2024-11-24 00:55:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696299564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:55:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630700118] [2024-11-24 00:55:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:27,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:27,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:27,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:27,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:27,143 INFO L87 Difference]: Start difference. First operand 558 states and 923 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:27,222 INFO L93 Difference]: Finished difference Result 1090 states and 1816 transitions. [2024-11-24 00:55:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:27,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-11-24 00:55:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:27,229 INFO L225 Difference]: With dead ends: 1090 [2024-11-24 00:55:27,230 INFO L226 Difference]: Without dead ends: 539 [2024-11-24 00:55:27,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:27,236 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 0 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:27,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2689 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-24 00:55:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2024-11-24 00:55:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6753554502369667) internal successors, (707), 441 states have internal predecessors, (707), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 890 transitions. [2024-11-24 00:55:27,268 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 890 transitions. Word has length 108 [2024-11-24 00:55:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:27,268 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 890 transitions. [2024-11-24 00:55:27,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 890 transitions. [2024-11-24 00:55:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-24 00:55:27,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:27,273 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:55:27,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:55:27,273 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:27,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1502999164, now seen corresponding path program 1 times [2024-11-24 00:55:27,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:27,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752517551] [2024-11-24 00:55:27,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:27,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:27,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752517551] [2024-11-24 00:55:27,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752517551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:27,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:27,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:27,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995621023] [2024-11-24 00:55:27,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:27,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:27,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:27,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:27,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:27,539 INFO L87 Difference]: Start difference. First operand 539 states and 890 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:27,815 INFO L93 Difference]: Finished difference Result 1035 states and 1714 transitions. [2024-11-24 00:55:27,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:27,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-24 00:55:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:27,822 INFO L225 Difference]: With dead ends: 1035 [2024-11-24 00:55:27,823 INFO L226 Difference]: Without dead ends: 548 [2024-11-24 00:55:27,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 00:55:27,827 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 55 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4206 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:27,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4206 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:55:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-24 00:55:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 539. [2024-11-24 00:55:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6658767772511849) internal successors, (703), 441 states have internal predecessors, (703), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 886 transitions. [2024-11-24 00:55:27,861 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 886 transitions. Word has length 109 [2024-11-24 00:55:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:27,861 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 886 transitions. [2024-11-24 00:55:27,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 886 transitions. [2024-11-24 00:55:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-24 00:55:27,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:27,865 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:27,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:55:27,866 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:27,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:27,866 INFO L85 PathProgramCache]: Analyzing trace with hash 288381168, now seen corresponding path program 1 times [2024-11-24 00:55:27,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:27,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693738047] [2024-11-24 00:55:27,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:27,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:28,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:28,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693738047] [2024-11-24 00:55:28,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693738047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:28,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:28,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095236473] [2024-11-24 00:55:28,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:28,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:28,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:28,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:28,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:28,099 INFO L87 Difference]: Start difference. First operand 539 states and 886 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:28,348 INFO L93 Difference]: Finished difference Result 1035 states and 1710 transitions. [2024-11-24 00:55:28,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:28,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-11-24 00:55:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:28,355 INFO L225 Difference]: With dead ends: 1035 [2024-11-24 00:55:28,355 INFO L226 Difference]: Without dead ends: 548 [2024-11-24 00:55:28,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 00:55:28,358 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 54 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4206 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:28,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4206 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:55:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-24 00:55:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 539. [2024-11-24 00:55:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6563981042654028) internal successors, (699), 441 states have internal predecessors, (699), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 882 transitions. [2024-11-24 00:55:28,407 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 882 transitions. Word has length 110 [2024-11-24 00:55:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:28,408 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 882 transitions. [2024-11-24 00:55:28,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 882 transitions. [2024-11-24 00:55:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-24 00:55:28,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:28,412 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:28,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:55:28,412 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:28,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1260414761, now seen corresponding path program 1 times [2024-11-24 00:55:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:28,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795840276] [2024-11-24 00:55:28,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:28,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:28,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795840276] [2024-11-24 00:55:28,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795840276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:28,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:28,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:28,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890585569] [2024-11-24 00:55:28,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:28,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:28,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:28,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:28,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:28,621 INFO L87 Difference]: Start difference. First operand 539 states and 882 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:28,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:28,848 INFO L93 Difference]: Finished difference Result 1035 states and 1706 transitions. [2024-11-24 00:55:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:28,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-11-24 00:55:28,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:28,858 INFO L225 Difference]: With dead ends: 1035 [2024-11-24 00:55:28,858 INFO L226 Difference]: Without dead ends: 548 [2024-11-24 00:55:28,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 00:55:28,862 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 53 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:28,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4188 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:55:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-24 00:55:28,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 539. [2024-11-24 00:55:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.646919431279621) internal successors, (695), 441 states have internal predecessors, (695), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 878 transitions. [2024-11-24 00:55:28,900 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 878 transitions. Word has length 111 [2024-11-24 00:55:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:28,900 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 878 transitions. [2024-11-24 00:55:28,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 878 transitions. [2024-11-24 00:55:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-24 00:55:28,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:28,905 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:28,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:55:28,905 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:28,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1660597161, now seen corresponding path program 1 times [2024-11-24 00:55:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:28,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971631669] [2024-11-24 00:55:28,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:29,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971631669] [2024-11-24 00:55:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971631669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:29,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:29,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:55:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046335537] [2024-11-24 00:55:29,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:29,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:55:29,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:29,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:55:29,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:29,150 INFO L87 Difference]: Start difference. First operand 539 states and 878 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-24 00:55:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:29,270 INFO L93 Difference]: Finished difference Result 1026 states and 1688 transitions. [2024-11-24 00:55:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:55:29,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2024-11-24 00:55:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:29,277 INFO L225 Difference]: With dead ends: 1026 [2024-11-24 00:55:29,277 INFO L226 Difference]: Without dead ends: 518 [2024-11-24 00:55:29,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:55:29,281 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 84 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5129 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:29,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5129 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-24 00:55:29,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2024-11-24 00:55:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 401 states have (on average 1.6483790523690773) internal successors, (661), 420 states have internal predecessors, (661), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:29,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 844 transitions. [2024-11-24 00:55:29,317 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 844 transitions. Word has length 111 [2024-11-24 00:55:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:29,317 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 844 transitions. [2024-11-24 00:55:29,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-24 00:55:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 844 transitions. [2024-11-24 00:55:29,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 00:55:29,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:29,322 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:55:29,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:55:29,322 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:29,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash -283824725, now seen corresponding path program 1 times [2024-11-24 00:55:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:29,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320780978] [2024-11-24 00:55:29,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:29,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:29,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320780978] [2024-11-24 00:55:29,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320780978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:29,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:29,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056771754] [2024-11-24 00:55:29,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:29,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:29,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:29,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:29,519 INFO L87 Difference]: Start difference. First operand 518 states and 844 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:29,624 INFO L93 Difference]: Finished difference Result 1005 states and 1654 transitions. [2024-11-24 00:55:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:29,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-11-24 00:55:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:29,629 INFO L225 Difference]: With dead ends: 1005 [2024-11-24 00:55:29,630 INFO L226 Difference]: Without dead ends: 518 [2024-11-24 00:55:29,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 00:55:29,633 INFO L435 NwaCegarLoop]: 827 mSDtfsCounter, 17 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:29,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4126 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-24 00:55:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2024-11-24 00:55:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 401 states have (on average 1.6458852867830425) internal successors, (660), 420 states have internal predecessors, (660), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 843 transitions. [2024-11-24 00:55:29,661 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 843 transitions. Word has length 112 [2024-11-24 00:55:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:29,662 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 843 transitions. [2024-11-24 00:55:29,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:29,662 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 843 transitions. [2024-11-24 00:55:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 00:55:29,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:29,666 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:29,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:55:29,667 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:29,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:29,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1670318898, now seen corresponding path program 1 times [2024-11-24 00:55:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068321830] [2024-11-24 00:55:29,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:29,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:29,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068321830] [2024-11-24 00:55:29,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068321830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:29,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:29,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:29,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540709933] [2024-11-24 00:55:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:29,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:29,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:29,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:29,879 INFO L87 Difference]: Start difference. First operand 518 states and 843 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:29,980 INFO L93 Difference]: Finished difference Result 1005 states and 1653 transitions. [2024-11-24 00:55:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2024-11-24 00:55:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:29,986 INFO L225 Difference]: With dead ends: 1005 [2024-11-24 00:55:29,986 INFO L226 Difference]: Without dead ends: 518 [2024-11-24 00:55:29,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 00:55:29,991 INFO L435 NwaCegarLoop]: 827 mSDtfsCounter, 16 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:29,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4126 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-24 00:55:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2024-11-24 00:55:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 401 states have (on average 1.6433915211970074) internal successors, (659), 420 states have internal predecessors, (659), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 842 transitions. [2024-11-24 00:55:30,016 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 842 transitions. Word has length 113 [2024-11-24 00:55:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:30,016 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 842 transitions. [2024-11-24 00:55:30,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 842 transitions. [2024-11-24 00:55:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-24 00:55:30,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:30,020 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:55:30,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:55:30,021 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:30,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1984721700, now seen corresponding path program 1 times [2024-11-24 00:55:30,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:30,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565483533] [2024-11-24 00:55:30,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:30,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:30,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565483533] [2024-11-24 00:55:30,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565483533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:30,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:30,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:55:30,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398101741] [2024-11-24 00:55:30,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:30,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:30,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:30,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:30,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:30,152 INFO L87 Difference]: Start difference. First operand 518 states and 842 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:30,201 INFO L93 Difference]: Finished difference Result 1005 states and 1652 transitions. [2024-11-24 00:55:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:30,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-24 00:55:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:30,207 INFO L225 Difference]: With dead ends: 1005 [2024-11-24 00:55:30,208 INFO L226 Difference]: Without dead ends: 518 [2024-11-24 00:55:30,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:30,211 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 9 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:30,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2499 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:30,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-24 00:55:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2024-11-24 00:55:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 401 states have (on average 1.6408977556109725) internal successors, (658), 420 states have internal predecessors, (658), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 841 transitions. [2024-11-24 00:55:30,237 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 841 transitions. Word has length 114 [2024-11-24 00:55:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:30,238 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 841 transitions. [2024-11-24 00:55:30,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 841 transitions. [2024-11-24 00:55:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-24 00:55:30,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:30,243 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:55:30,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:55:30,243 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:30,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash -431114650, now seen corresponding path program 1 times [2024-11-24 00:55:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:30,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873540135] [2024-11-24 00:55:30,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:55:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:30,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873540135] [2024-11-24 00:55:30,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873540135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:30,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:30,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:55:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054179579] [2024-11-24 00:55:30,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:30,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:30,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:30,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:30,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:30,395 INFO L87 Difference]: Start difference. First operand 518 states and 841 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:30,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:30,454 INFO L93 Difference]: Finished difference Result 999 states and 1640 transitions. [2024-11-24 00:55:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:30,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-11-24 00:55:30,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:30,462 INFO L225 Difference]: With dead ends: 999 [2024-11-24 00:55:30,462 INFO L226 Difference]: Without dead ends: 518 [2024-11-24 00:55:30,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:30,468 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 4 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:30,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2478 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-24 00:55:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2024-11-24 00:55:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 401 states have (on average 1.6384039900249376) internal successors, (657), 420 states have internal predecessors, (657), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-24 00:55:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 840 transitions. [2024-11-24 00:55:30,495 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 840 transitions. Word has length 114 [2024-11-24 00:55:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:30,495 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 840 transitions. [2024-11-24 00:55:30,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 00:55:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 840 transitions. [2024-11-24 00:55:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-24 00:55:30,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:30,499 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:30,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:55:30,500 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:30,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash -769306947, now seen corresponding path program 1 times [2024-11-24 00:55:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116453144] [2024-11-24 00:55:30,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:30,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:55:30,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:30,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116453144] [2024-11-24 00:55:30,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116453144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:30,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923457710] [2024-11-24 00:55:30,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:30,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:30,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:30,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:30,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:55:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:31,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:55:31,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:55:31,319 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:31,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923457710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:31,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:31,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:55:31,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014867936] [2024-11-24 00:55:31,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:31,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:55:31,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:31,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:55:31,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:55:31,321 INFO L87 Difference]: Start difference. First operand 518 states and 840 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:55:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:32,129 INFO L93 Difference]: Finished difference Result 999 states and 1662 transitions. [2024-11-24 00:55:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2024-11-24 00:55:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:32,135 INFO L225 Difference]: With dead ends: 999 [2024-11-24 00:55:32,135 INFO L226 Difference]: Without dead ends: 526 [2024-11-24 00:55:32,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:55:32,138 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 800 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:32,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 2106 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:55:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-24 00:55:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-11-24 00:55:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 408 states have (on average 1.6397058823529411) internal successors, (669), 427 states have internal predecessors, (669), 94 states have call successors, (94), 24 states have call predecessors, (94), 23 states have return successors, (90), 87 states have call predecessors, (90), 89 states have call successors, (90) [2024-11-24 00:55:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 853 transitions. [2024-11-24 00:55:32,169 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 853 transitions. Word has length 115 [2024-11-24 00:55:32,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:32,169 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 853 transitions. [2024-11-24 00:55:32,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:55:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 853 transitions. [2024-11-24 00:55:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 00:55:32,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:32,173 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:32,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:55:32,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:55:32,374 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:32,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1194177073, now seen corresponding path program 1 times [2024-11-24 00:55:32,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:32,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809962249] [2024-11-24 00:55:32,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:32,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:55:32,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:32,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809962249] [2024-11-24 00:55:32,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809962249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:32,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576041765] [2024-11-24 00:55:32,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:32,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:32,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:32,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:32,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:55:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:32,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:55:33,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:55:33,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:33,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576041765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:33,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:33,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:55:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329240920] [2024-11-24 00:55:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:33,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:55:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:33,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:55:33,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:55:33,169 INFO L87 Difference]: Start difference. First operand 526 states and 853 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:55:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:33,907 INFO L93 Difference]: Finished difference Result 1015 states and 1685 transitions. [2024-11-24 00:55:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:33,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2024-11-24 00:55:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:33,915 INFO L225 Difference]: With dead ends: 1015 [2024-11-24 00:55:33,915 INFO L226 Difference]: Without dead ends: 534 [2024-11-24 00:55:33,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:55:33,919 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 797 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:33,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 2103 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:55:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-24 00:55:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-11-24 00:55:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 415 states have (on average 1.6409638554216868) internal successors, (681), 434 states have internal predecessors, (681), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (91), 87 states have call predecessors, (91), 89 states have call successors, (91) [2024-11-24 00:55:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 866 transitions. [2024-11-24 00:55:33,959 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 866 transitions. Word has length 117 [2024-11-24 00:55:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:33,960 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 866 transitions. [2024-11-24 00:55:33,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:55:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 866 transitions. [2024-11-24 00:55:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-24 00:55:33,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:33,964 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:33,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:55:34,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:55:34,168 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:34,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1344416957, now seen corresponding path program 1 times [2024-11-24 00:55:34,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:34,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340863481] [2024-11-24 00:55:34,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:34,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:55:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340863481] [2024-11-24 00:55:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340863481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489905026] [2024-11-24 00:55:34,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:34,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:34,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:34,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:55:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:34,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:55:34,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:55:34,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:34,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489905026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:34,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:34,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:55:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827823357] [2024-11-24 00:55:34,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:34,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:55:34,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:34,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:55:34,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:55:34,932 INFO L87 Difference]: Start difference. First operand 534 states and 866 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:55:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:35,586 INFO L93 Difference]: Finished difference Result 1031 states and 1708 transitions. [2024-11-24 00:55:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2024-11-24 00:55:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:35,592 INFO L225 Difference]: With dead ends: 1031 [2024-11-24 00:55:35,592 INFO L226 Difference]: Without dead ends: 542 [2024-11-24 00:55:35,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:55:35,595 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 789 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:35,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 2100 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:55:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-24 00:55:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-24 00:55:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 422 states have (on average 1.6421800947867298) internal successors, (693), 441 states have internal predecessors, (693), 94 states have call successors, (94), 26 states have call predecessors, (94), 25 states have return successors, (92), 87 states have call predecessors, (92), 89 states have call successors, (92) [2024-11-24 00:55:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 879 transitions. [2024-11-24 00:55:35,624 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 879 transitions. Word has length 119 [2024-11-24 00:55:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:35,625 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 879 transitions. [2024-11-24 00:55:35,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:55:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 879 transitions. [2024-11-24 00:55:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-24 00:55:35,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:35,629 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:35,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:55:35,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:55:35,829 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:35,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:35,830 INFO L85 PathProgramCache]: Analyzing trace with hash 102190777, now seen corresponding path program 1 times [2024-11-24 00:55:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:35,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321612440] [2024-11-24 00:55:35,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:55:35,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321612440] [2024-11-24 00:55:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321612440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620428935] [2024-11-24 00:55:35,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:35,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:35,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:35,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:55:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:36,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:55:36,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:55:36,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:36,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620428935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:36,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:36,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-24 00:55:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17754133] [2024-11-24 00:55:36,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:36,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:55:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:36,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:55:36,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:55:36,484 INFO L87 Difference]: Start difference. First operand 542 states and 879 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:55:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:37,079 INFO L93 Difference]: Finished difference Result 1047 states and 1731 transitions. [2024-11-24 00:55:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:37,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2024-11-24 00:55:37,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:37,086 INFO L225 Difference]: With dead ends: 1047 [2024-11-24 00:55:37,086 INFO L226 Difference]: Without dead ends: 550 [2024-11-24 00:55:37,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:55:37,090 INFO L435 NwaCegarLoop]: 813 mSDtfsCounter, 769 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:37,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 2097 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:55:37,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-24 00:55:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-11-24 00:55:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 429 states have (on average 1.6433566433566433) internal successors, (705), 448 states have internal predecessors, (705), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (93), 87 states have call predecessors, (93), 89 states have call successors, (93) [2024-11-24 00:55:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 892 transitions. [2024-11-24 00:55:37,118 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 892 transitions. Word has length 121 [2024-11-24 00:55:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:37,119 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 892 transitions. [2024-11-24 00:55:37,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:55:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 892 transitions. [2024-11-24 00:55:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 00:55:37,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:37,123 INFO L218 NwaCegarLoop]: trace histogram [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 00:55:37,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:55:37,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:37,323 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:37,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 315657405, now seen corresponding path program 1 times [2024-11-24 00:55:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513643739] [2024-11-24 00:55:37,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:55:37,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:37,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513643739] [2024-11-24 00:55:37,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513643739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:37,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431094396] [2024-11-24 00:55:37,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:37,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:37,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:37,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:37,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:55:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:38,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:55:38,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:55:38,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:38,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431094396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:38,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:38,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2024-11-24 00:55:38,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473637649] [2024-11-24 00:55:38,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:38,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:55:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:38,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:55:38,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:55:38,270 INFO L87 Difference]: Start difference. First operand 550 states and 892 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-24 00:55:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:38,876 INFO L93 Difference]: Finished difference Result 598 states and 963 transitions. [2024-11-24 00:55:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:55:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 123 [2024-11-24 00:55:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:38,882 INFO L225 Difference]: With dead ends: 598 [2024-11-24 00:55:38,882 INFO L226 Difference]: Without dead ends: 583 [2024-11-24 00:55:38,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:55:38,883 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 775 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:38,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 2130 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:55:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-24 00:55:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 552. [2024-11-24 00:55:38,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 431 states have (on average 1.640371229698376) internal successors, (707), 450 states have internal predecessors, (707), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (93), 87 states have call predecessors, (93), 89 states have call successors, (93) [2024-11-24 00:55:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 894 transitions. [2024-11-24 00:55:38,914 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 894 transitions. Word has length 123 [2024-11-24 00:55:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:38,915 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 894 transitions. [2024-11-24 00:55:38,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-24 00:55:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 894 transitions. [2024-11-24 00:55:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:55:38,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:38,919 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:55:38,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:55:39,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:39,120 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:39,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash -201530248, now seen corresponding path program 1 times [2024-11-24 00:55:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:39,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841363969] [2024-11-24 00:55:39,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:55:39,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:39,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841363969] [2024-11-24 00:55:39,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841363969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:39,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505550528] [2024-11-24 00:55:39,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:39,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:39,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:39,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:39,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:55:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:39,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:55:39,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:55:39,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:39,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505550528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:39,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:39,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-24 00:55:39,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243970693] [2024-11-24 00:55:39,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:39,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:55:39,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:39,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:55:39,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:55:39,938 INFO L87 Difference]: Start difference. First operand 552 states and 894 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-24 00:55:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:39,972 INFO L93 Difference]: Finished difference Result 567 states and 912 transitions. [2024-11-24 00:55:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:55:39,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 129 [2024-11-24 00:55:39,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:39,978 INFO L225 Difference]: With dead ends: 567 [2024-11-24 00:55:39,978 INFO L226 Difference]: Without dead ends: 552 [2024-11-24 00:55:39,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 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 00:55:39,979 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 0 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3344 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 00:55:39,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3344 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-24 00:55:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-11-24 00:55:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 431 states have (on average 1.6380510440835268) internal successors, (706), 450 states have internal predecessors, (706), 94 states have call successors, (94), 27 states have call predecessors, (94), 26 states have return successors, (93), 87 states have call predecessors, (93), 89 states have call successors, (93) [2024-11-24 00:55:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 893 transitions. [2024-11-24 00:55:40,008 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 893 transitions. Word has length 129 [2024-11-24 00:55:40,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:40,009 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 893 transitions. [2024-11-24 00:55:40,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-24 00:55:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 893 transitions. [2024-11-24 00:55:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-24 00:55:40,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:40,013 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:40,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:55:40,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 00:55:40,214 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:40,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash 73261037, now seen corresponding path program 1 times [2024-11-24 00:55:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:40,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061421891] [2024-11-24 00:55:40,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:40,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-24 00:55:40,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:40,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061421891] [2024-11-24 00:55:40,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061421891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:40,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286339723] [2024-11-24 00:55:40,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:40,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:40,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:40,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:40,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:55:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:40,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:55:40,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:55:41,227 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286339723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:41,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:41,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-24 00:55:41,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893011149] [2024-11-24 00:55:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:41,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:55:41,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:41,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:55:41,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:55:41,228 INFO L87 Difference]: Start difference. First operand 552 states and 893 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-24 00:55:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:45,482 INFO L93 Difference]: Finished difference Result 1900 states and 3145 transitions. [2024-11-24 00:55:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:55:45,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 140 [2024-11-24 00:55:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:45,494 INFO L225 Difference]: With dead ends: 1900 [2024-11-24 00:55:45,494 INFO L226 Difference]: Without dead ends: 1393 [2024-11-24 00:55:45,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 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 00:55:45,500 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 2322 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 4599 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 4599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:45,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 2758 Invalid, 5105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [506 Valid, 4599 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-24 00:55:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2024-11-24 00:55:45,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1279. [2024-11-24 00:55:45,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1004 states have (on average 1.6613545816733069) internal successors, (1668), 1043 states have internal predecessors, (1668), 210 states have call successors, (210), 59 states have call predecessors, (210), 64 states have return successors, (229), 202 states have call predecessors, (229), 205 states have call successors, (229) [2024-11-24 00:55:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 2107 transitions. [2024-11-24 00:55:45,603 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 2107 transitions. Word has length 140 [2024-11-24 00:55:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:45,603 INFO L471 AbstractCegarLoop]: Abstraction has 1279 states and 2107 transitions. [2024-11-24 00:55:45,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-24 00:55:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 2107 transitions. [2024-11-24 00:55:45,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 00:55:45,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:45,608 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:45,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:55:45,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:45,809 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:45,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash -878986003, now seen corresponding path program 1 times [2024-11-24 00:55:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460645676] [2024-11-24 00:55:45,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:55:46,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:46,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460645676] [2024-11-24 00:55:46,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460645676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:46,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814776443] [2024-11-24 00:55:46,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:46,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:46,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:46,202 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:46,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:55:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:46,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:55:46,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:55:46,774 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:46,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814776443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:46,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:46,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-24 00:55:46,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378863207] [2024-11-24 00:55:46,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:46,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:55:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:46,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:55:46,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:55:46,777 INFO L87 Difference]: Start difference. First operand 1279 states and 2107 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 00:55:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:49,820 INFO L93 Difference]: Finished difference Result 2771 states and 4589 transitions. [2024-11-24 00:55:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:55:49,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 142 [2024-11-24 00:55:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:49,832 INFO L225 Difference]: With dead ends: 2771 [2024-11-24 00:55:49,832 INFO L226 Difference]: Without dead ends: 1537 [2024-11-24 00:55:49,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 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 00:55:49,838 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 2074 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 3266 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 3266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:49,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2156 Valid, 2029 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 3266 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 00:55:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2024-11-24 00:55:49,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1350. [2024-11-24 00:55:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1056 states have (on average 1.6477272727272727) internal successors, (1740), 1101 states have internal predecessors, (1740), 218 states have call successors, (218), 64 states have call predecessors, (218), 75 states have return successors, (255), 210 states have call predecessors, (255), 213 states have call successors, (255) [2024-11-24 00:55:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 2213 transitions. [2024-11-24 00:55:49,924 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 2213 transitions. Word has length 142 [2024-11-24 00:55:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:49,925 INFO L471 AbstractCegarLoop]: Abstraction has 1350 states and 2213 transitions. [2024-11-24 00:55:49,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-24 00:55:49,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 2213 transitions. [2024-11-24 00:55:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 00:55:49,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:49,929 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-24 00:55:49,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:55:50,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:50,130 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:50,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:50,130 INFO L85 PathProgramCache]: Analyzing trace with hash -188671274, now seen corresponding path program 1 times [2024-11-24 00:55:50,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:50,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299248173] [2024-11-24 00:55:50,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:50,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:55:50,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:50,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299248173] [2024-11-24 00:55:50,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299248173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:50,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900758215] [2024-11-24 00:55:50,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:50,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:50,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:50,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:50,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:55:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:50,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:55:50,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:55:50,994 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:50,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900758215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:50,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:55:50,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736021095] [2024-11-24 00:55:50,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:50,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:50,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:50,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:55:50,997 INFO L87 Difference]: Start difference. First operand 1350 states and 2213 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:55:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:52,979 INFO L93 Difference]: Finished difference Result 4225 states and 7048 transitions. [2024-11-24 00:55:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:55:52,980 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2024-11-24 00:55:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:53,000 INFO L225 Difference]: With dead ends: 4225 [2024-11-24 00:55:53,000 INFO L226 Difference]: Without dead ends: 2920 [2024-11-24 00:55:53,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 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 00:55:53,008 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 1857 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:53,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 916 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:55:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2024-11-24 00:55:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2808. [2024-11-24 00:55:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 2167 states have (on average 1.6506691278264882) internal successors, (3577), 2267 states have internal predecessors, (3577), 487 states have call successors, (487), 123 states have call predecessors, (487), 153 states have return successors, (613), 479 states have call predecessors, (613), 482 states have call successors, (613) [2024-11-24 00:55:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 4677 transitions. [2024-11-24 00:55:53,230 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 4677 transitions. Word has length 147 [2024-11-24 00:55:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:53,232 INFO L471 AbstractCegarLoop]: Abstraction has 2808 states and 4677 transitions. [2024-11-24 00:55:53,232 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:55:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 4677 transitions. [2024-11-24 00:55:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 00:55:53,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:53,238 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 00:55:53,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:55:53,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:53,438 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:53,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1553976905, now seen corresponding path program 1 times [2024-11-24 00:55:53,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:53,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453149106] [2024-11-24 00:55:53,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:53,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:55:53,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:53,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453149106] [2024-11-24 00:55:53,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453149106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:53,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324196951] [2024-11-24 00:55:53,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:53,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:53,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:53,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:55:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:54,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:55:54,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:55:54,294 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:54,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324196951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:54,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:54,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:55:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556389135] [2024-11-24 00:55:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:54,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:54,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:54,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:55:54,296 INFO L87 Difference]: Start difference. First operand 2808 states and 4677 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:55:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:56,387 INFO L93 Difference]: Finished difference Result 9026 states and 15346 transitions. [2024-11-24 00:55:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:55:56,388 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 148 [2024-11-24 00:55:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:56,433 INFO L225 Difference]: With dead ends: 9026 [2024-11-24 00:55:56,434 INFO L226 Difference]: Without dead ends: 6263 [2024-11-24 00:55:56,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 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 00:55:56,448 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1862 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:56,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1937 Valid, 876 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:55:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2024-11-24 00:55:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6024. [2024-11-24 00:55:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 4568 states have (on average 1.6464535901926445) internal successors, (7521), 4800 states have internal predecessors, (7521), 1138 states have call successors, (1138), 241 states have call predecessors, (1138), 317 states have return successors, (1568), 1134 states have call predecessors, (1568), 1133 states have call successors, (1568) [2024-11-24 00:55:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 10227 transitions. [2024-11-24 00:55:56,971 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 10227 transitions. Word has length 148 [2024-11-24 00:55:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:56,972 INFO L471 AbstractCegarLoop]: Abstraction has 6024 states and 10227 transitions. [2024-11-24 00:55:56,973 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:55:56,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 10227 transitions. [2024-11-24 00:55:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-24 00:55:56,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:56,978 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 00:55:56,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 00:55:57,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:57,179 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:57,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash -928774600, now seen corresponding path program 1 times [2024-11-24 00:55:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:57,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723807940] [2024-11-24 00:55:57,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:57,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:55:57,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723807940] [2024-11-24 00:55:57,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723807940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926190627] [2024-11-24 00:55:57,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:57,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:57,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:57,567 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:57,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:55:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:57,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:55:57,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:55:58,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:58,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926190627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:58,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:58,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:55:58,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198993140] [2024-11-24 00:55:58,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:58,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:58,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:58,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:58,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:55:58,089 INFO L87 Difference]: Start difference. First operand 6024 states and 10227 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:56:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:56:00,316 INFO L93 Difference]: Finished difference Result 19770 states and 34601 transitions. [2024-11-24 00:56:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:56:00,317 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2024-11-24 00:56:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:56:00,429 INFO L225 Difference]: With dead ends: 19770 [2024-11-24 00:56:00,429 INFO L226 Difference]: Without dead ends: 13791 [2024-11-24 00:56:00,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 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 00:56:00,463 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 1850 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:56:00,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 870 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:56:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13791 states. [2024-11-24 00:56:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13791 to 13297. [2024-11-24 00:56:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13297 states, 9873 states have (on average 1.6374962017623822) internal successors, (16167), 10427 states have internal predecessors, (16167), 2758 states have call successors, (2758), 477 states have call predecessors, (2758), 665 states have return successors, (4254), 2774 states have call predecessors, (4254), 2753 states have call successors, (4254) [2024-11-24 00:56:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13297 states to 13297 states and 23179 transitions. [2024-11-24 00:56:01,783 INFO L78 Accepts]: Start accepts. Automaton has 13297 states and 23179 transitions. Word has length 149 [2024-11-24 00:56:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:56:01,785 INFO L471 AbstractCegarLoop]: Abstraction has 13297 states and 23179 transitions. [2024-11-24 00:56:01,785 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), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:56:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 13297 states and 23179 transitions. [2024-11-24 00:56:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-24 00:56:01,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:56:01,792 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-24 00:56:01,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:56:01,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:01,999 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:56:01,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:56:01,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1272631577, now seen corresponding path program 1 times [2024-11-24 00:56:01,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:56:01,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981503331] [2024-11-24 00:56:02,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:02,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:56:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:56:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:56:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981503331] [2024-11-24 00:56:02,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981503331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:56:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074896417] [2024-11-24 00:56:02,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:02,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:02,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:56:02,342 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:56:02,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:56:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:02,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:56:02,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:56:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:56:02,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:56:02,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074896417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:56:02,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:56:02,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:56:02,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885978491] [2024-11-24 00:56:02,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:56:02,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:56:02,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:56:02,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:56:02,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:56:02,855 INFO L87 Difference]: Start difference. First operand 13297 states and 23179 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:56:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:56:06,346 INFO L93 Difference]: Finished difference Result 44407 states and 81352 transitions. [2024-11-24 00:56:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:56:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2024-11-24 00:56:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:56:06,691 INFO L225 Difference]: With dead ends: 44407 [2024-11-24 00:56:06,691 INFO L226 Difference]: Without dead ends: 31155 [2024-11-24 00:56:06,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 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 00:56:06,797 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 1838 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:56:06,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 867 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:56:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31155 states. [2024-11-24 00:56:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31155 to 30206. [2024-11-24 00:56:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30206 states, 21906 states have (on average 1.6251711859764448) internal successors, (35601), 23258 states have internal predecessors, (35601), 6886 states have call successors, (6886), 949 states have call predecessors, (6886), 1413 states have return successors, (12200), 6978 states have call predecessors, (12200), 6881 states have call successors, (12200) [2024-11-24 00:56:09,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30206 states to 30206 states and 54687 transitions. [2024-11-24 00:56:09,334 INFO L78 Accepts]: Start accepts. Automaton has 30206 states and 54687 transitions. Word has length 150 [2024-11-24 00:56:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:56:09,335 INFO L471 AbstractCegarLoop]: Abstraction has 30206 states and 54687 transitions. [2024-11-24 00:56:09,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:56:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 30206 states and 54687 transitions. [2024-11-24 00:56:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-24 00:56:09,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:56:09,342 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-24 00:56:09,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:56:09,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:09,547 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:56:09,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:56:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash 796750234, now seen corresponding path program 1 times [2024-11-24 00:56:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:56:09,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071467005] [2024-11-24 00:56:09,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:56:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-24 00:56:09,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:56:09,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071467005] [2024-11-24 00:56:09,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071467005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:56:09,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986093955] [2024-11-24 00:56:09,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:09,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:56:09,877 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:56:09,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:56:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:10,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:56:10,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:56:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:56:10,386 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:56:10,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986093955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:56:10,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:56:10,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:56:10,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788747095] [2024-11-24 00:56:10,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:56:10,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:56:10,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:56:10,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:56:10,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:56:10,387 INFO L87 Difference]: Start difference. First operand 30206 states and 54687 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:56:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:56:16,834 INFO L93 Difference]: Finished difference Result 102363 states and 201604 transitions. [2024-11-24 00:56:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:56:16,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2024-11-24 00:56:16,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:56:17,481 INFO L225 Difference]: With dead ends: 102363 [2024-11-24 00:56:17,481 INFO L226 Difference]: Without dead ends: 72192 [2024-11-24 00:56:17,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 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 00:56:17,649 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 1813 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:56:17,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 962 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:56:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72192 states. [2024-11-24 00:56:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72192 to 70581. [2024-11-24 00:56:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70581 states, 49933 states have (on average 1.610618228426091) internal successors, (80423), 53291 states have internal predecessors, (80423), 17602 states have call successors, (17602), 1890 states have call predecessors, (17602), 3045 states have return successors, (36953), 17953 states have call predecessors, (36953), 17597 states have call successors, (36953) [2024-11-24 00:56:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70581 states to 70581 states and 134978 transitions. [2024-11-24 00:56:24,038 INFO L78 Accepts]: Start accepts. Automaton has 70581 states and 134978 transitions. Word has length 151 [2024-11-24 00:56:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:56:24,038 INFO L471 AbstractCegarLoop]: Abstraction has 70581 states and 134978 transitions. [2024-11-24 00:56:24,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:56:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 70581 states and 134978 transitions. [2024-11-24 00:56:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 00:56:24,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:56:24,066 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2024-11-24 00:56:24,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:56:24,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:24,267 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:56:24,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:56:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1150830472, now seen corresponding path program 1 times [2024-11-24 00:56:24,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:56:24,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495347004] [2024-11-24 00:56:24,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:24,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:56:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-24 00:56:24,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:56:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495347004] [2024-11-24 00:56:24,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495347004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:56:24,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892836305] [2024-11-24 00:56:24,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:24,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:24,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:56:24,722 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:56:24,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18e180b2-5e8c-400c-ad89-bd9b7de15bbb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:56:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:25,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:56:25,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:56:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 00:56:25,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:56:25,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892836305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:56:25,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:56:25,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-24 00:56:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690105052] [2024-11-24 00:56:25,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:56:25,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:56:25,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:56:25,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:56:25,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:56:25,191 INFO L87 Difference]: Start difference. First operand 70581 states and 134978 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23)