./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.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_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/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_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/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_5c1b886e-b675-469f-b84f-0e890fca99f5/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 d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:24:09,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:24:09,758 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:24:09,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:24:09,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:24:09,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:24:09,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:24:09,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:24:09,812 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:24:09,812 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:24:09,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:24:09,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:24:09,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:24:09,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:24:09,814 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:24:09,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:24:09,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:24:09,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:24:09,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:24:09,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:24:09,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:24:09,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:24:09,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:24:09,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:24:09,817 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:24:09,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:24:09,817 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:24:09,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:24:09,817 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:24:09,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:24:09,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:24:09,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:24:09,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:09,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:24:09,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:24:09,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:24:09,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:24:09,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:09,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:24:09,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:24:09,819 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:24:09,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:24:09,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:24:09,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:24:09,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:24:09,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:24:09,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:24:09,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:24:09,820 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_5c1b886e-b675-469f-b84f-0e890fca99f5/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 -> d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f [2024-11-23 18:24:10,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:24:10,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:24:10,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:24:10,175 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:24:10,176 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:24:10,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2024-11-23 18:24:13,241 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/data/beed467f8/81096519ce0a4bddadd463cb4e971fb9/FLAG06edf41c3 [2024-11-23 18:24:13,632 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:24:13,635 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2024-11-23 18:24:13,671 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/data/beed467f8/81096519ce0a4bddadd463cb4e971fb9/FLAG06edf41c3 [2024-11-23 18:24:13,686 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/data/beed467f8/81096519ce0a4bddadd463cb4e971fb9 [2024-11-23 18:24:13,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:24:13,689 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:24:13,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:24:13,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:24:13,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:24:13,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:24:13" (1/1) ... [2024-11-23 18:24:13,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc1ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:13, skipping insertion in model container [2024-11-23 18:24:13,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:24:13" (1/1) ... [2024-11-23 18:24:13,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:24:14,401 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_5c1b886e-b675-469f-b84f-0e890fca99f5/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2024-11-23 18:24:14,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:24:14,495 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:24:14,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-11-23 18:24:14,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [169] [2024-11-23 18:24:14,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [837] [2024-11-23 18:24:14,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [932] [2024-11-23 18:24:14,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1290] [2024-11-23 18:24:14,507 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1382] [2024-11-23 18:24:14,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2960] [2024-11-23 18:24:14,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2995] [2024-11-23 18:24:14,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3004] [2024-11-23 18:24:14,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3019] [2024-11-23 18:24:14,671 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_5c1b886e-b675-469f-b84f-0e890fca99f5/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2024-11-23 18:24:14,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:24:14,742 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:24:14,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14 WrapperNode [2024-11-23 18:24:14,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:24:14,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:24:14,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:24:14,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:24:14,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,858 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 881 [2024-11-23 18:24:14,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:24:14,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:24:14,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:24:14,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:24:14,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,877 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,904 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-23 18:24:14,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,926 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:14,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:24:14,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:24:14,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:24:14,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:24:14,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (1/1) ... [2024-11-23 18:24:15,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:24:15,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:15,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:24:15,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:24:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-23 18:24:15,083 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-23 18:24:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:24:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-23 18:24:15,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-23 18:24:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 18:24:15,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 18:24:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-23 18:24:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-23 18:24:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 18:24:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 18:24:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 18:24:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 18:24:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-23 18:24:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-23 18:24:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 18:24:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 18:24:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-23 18:24:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-23 18:24:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 18:24:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 18:24:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 18:24:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 18:24:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 18:24:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 18:24:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 18:24:15,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 18:24:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 18:24:15,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 18:24:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 18:24:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 18:24:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 18:24:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 18:24:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 18:24:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 18:24:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 18:24:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 18:24:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 18:24:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 18:24:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-23 18:24:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 18:24:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 18:24:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 18:24:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-11-23 18:24:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-11-23 18:24:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:24:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:24:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 18:24:15,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 18:24:15,345 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:24:15,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:24:16,994 INFO L? ?]: Removed 476 outVars from TransFormulas that were not future-live. [2024-11-23 18:24:16,994 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:24:17,046 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:24:17,046 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-23 18:24:17,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:24:17 BoogieIcfgContainer [2024-11-23 18:24:17,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:24:17,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:24:17,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:24:17,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:24:17,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:24:13" (1/3) ... [2024-11-23 18:24:17,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124eb659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:24:17, skipping insertion in model container [2024-11-23 18:24:17,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:24:14" (2/3) ... [2024-11-23 18:24:17,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124eb659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:24:17, skipping insertion in model container [2024-11-23 18:24:17,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:24:17" (3/3) ... [2024-11-23 18:24:17,068 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2024-11-23 18:24:17,083 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:24:17,085 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product30.cil.c that has 27 procedures, 605 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-23 18:24:17,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:24:17,182 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;@254e5144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:24:17,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:24:17,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 475 states have (on average 1.696842105263158) internal successors, (806), 495 states have internal predecessors, (806), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-23 18:24:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 18:24:17,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:17,219 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:17,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:17,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash -404746450, now seen corresponding path program 1 times [2024-11-23 18:24:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:17,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240590917] [2024-11-23 18:24:17,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:24:18,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:18,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240590917] [2024-11-23 18:24:18,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240590917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119449098] [2024-11-23 18:24:18,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:18,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:18,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:18,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:24:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:18,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:24:18,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 18:24:18,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:18,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119449098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:18,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:18,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-23 18:24:18,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974471200] [2024-11-23 18:24:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:18,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:24:18,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:18,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:24:18,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:24:18,738 INFO L87 Difference]: Start difference. First operand has 605 states, 475 states have (on average 1.696842105263158) internal successors, (806), 495 states have internal predecessors, (806), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 18:24:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:18,892 INFO L93 Difference]: Finished difference Result 1188 states and 2003 transitions. [2024-11-23 18:24:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:24:18,894 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2024-11-23 18:24:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:18,923 INFO L225 Difference]: With dead ends: 1188 [2024-11-23 18:24:18,924 INFO L226 Difference]: Without dead ends: 595 [2024-11-23 18:24:18,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:24:18,942 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:18,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:18,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-23 18:24:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-11-23 18:24:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 468 states have (on average 1.6794871794871795) internal successors, (786), 486 states have internal predecessors, (786), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-23 18:24:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 987 transitions. [2024-11-23 18:24:19,088 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 987 transitions. Word has length 99 [2024-11-23 18:24:19,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:19,091 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 987 transitions. [2024-11-23 18:24:19,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 18:24:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 987 transitions. [2024-11-23 18:24:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-23 18:24:19,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:19,099 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:19,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:24:19,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:24:19,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:19,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash 752406455, now seen corresponding path program 1 times [2024-11-23 18:24:19,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:19,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882459809] [2024-11-23 18:24:19,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:19,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 18:24:19,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882459809] [2024-11-23 18:24:19,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882459809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161407650] [2024-11-23 18:24:19,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:19,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:19,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:19,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:19,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:24:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:20,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:24:20,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:24:20,133 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161407650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:20,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:20,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:24:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986116575] [2024-11-23 18:24:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:20,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:20,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:20,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:20,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:20,139 INFO L87 Difference]: Start difference. First operand 595 states and 987 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:24:20,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:20,338 INFO L93 Difference]: Finished difference Result 1191 states and 1982 transitions. [2024-11-23 18:24:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:20,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2024-11-23 18:24:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:20,371 INFO L225 Difference]: With dead ends: 1191 [2024-11-23 18:24:20,372 INFO L226 Difference]: Without dead ends: 604 [2024-11-23 18:24:20,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:20,379 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 17 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:20,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2914 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-23 18:24:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-11-23 18:24:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 476 states have (on average 1.680672268907563) internal successors, (800), 494 states have internal predecessors, (800), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-23 18:24:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1001 transitions. [2024-11-23 18:24:20,434 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1001 transitions. Word has length 83 [2024-11-23 18:24:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:20,434 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 1001 transitions. [2024-11-23 18:24:20,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:24:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1001 transitions. [2024-11-23 18:24:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 18:24:20,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:20,440 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:20,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:24:20,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:20,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:20,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1636437728, now seen corresponding path program 1 times [2024-11-23 18:24:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:20,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734982068] [2024-11-23 18:24:20,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:24:21,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:21,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734982068] [2024-11-23 18:24:21,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734982068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:21,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482788505] [2024-11-23 18:24:21,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:21,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:21,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:21,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:24:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:21,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:24:21,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:24:21,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:21,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482788505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:21,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:21,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-23 18:24:21,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89550634] [2024-11-23 18:24:21,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:21,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:21,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:21,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:21,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:24:21,562 INFO L87 Difference]: Start difference. First operand 604 states and 1001 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 18:24:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:21,941 INFO L93 Difference]: Finished difference Result 1261 states and 2106 transitions. [2024-11-23 18:24:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:21,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-23 18:24:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:21,957 INFO L225 Difference]: With dead ends: 1261 [2024-11-23 18:24:21,957 INFO L226 Difference]: Without dead ends: 667 [2024-11-23 18:24:21,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:21,961 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 122 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:21,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2809 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:24:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-23 18:24:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 649. [2024-11-23 18:24:22,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 520 states have (on average 1.7) internal successors, (884), 538 states have internal predecessors, (884), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-23 18:24:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1085 transitions. [2024-11-23 18:24:22,033 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1085 transitions. Word has length 101 [2024-11-23 18:24:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:22,034 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1085 transitions. [2024-11-23 18:24:22,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 18:24:22,035 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1085 transitions. [2024-11-23 18:24:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 18:24:22,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:22,040 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:22,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:22,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:22,241 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:22,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:22,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1081250580, now seen corresponding path program 1 times [2024-11-23 18:24:22,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:22,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76256063] [2024-11-23 18:24:22,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:22,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:24:22,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76256063] [2024-11-23 18:24:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76256063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193887663] [2024-11-23 18:24:22,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:22,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:22,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:22,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:22,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:24:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:23,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:24:23,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:24:23,165 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:23,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193887663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:23,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:23,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-23 18:24:23,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609994379] [2024-11-23 18:24:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:23,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:24:23,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:23,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:24:23,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:24:23,167 INFO L87 Difference]: Start difference. First operand 649 states and 1085 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:23,354 INFO L93 Difference]: Finished difference Result 1313 states and 2197 transitions. [2024-11-23 18:24:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2024-11-23 18:24:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:23,364 INFO L225 Difference]: With dead ends: 1313 [2024-11-23 18:24:23,364 INFO L226 Difference]: Without dead ends: 674 [2024-11-23 18:24:23,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:24:23,369 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 89 mSDsluCounter, 4778 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:23,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5752 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-23 18:24:23,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 662. [2024-11-23 18:24:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 530 states have (on average 1.6962264150943396) internal successors, (899), 550 states have internal predecessors, (899), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-23 18:24:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1106 transitions. [2024-11-23 18:24:23,409 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1106 transitions. Word has length 103 [2024-11-23 18:24:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:23,409 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1106 transitions. [2024-11-23 18:24:23,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1106 transitions. [2024-11-23 18:24:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 18:24:23,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:23,413 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:23,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:23,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:23,614 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:23,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash -663455537, now seen corresponding path program 1 times [2024-11-23 18:24:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:23,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126986092] [2024-11-23 18:24:23,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:23,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:24:23,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:23,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126986092] [2024-11-23 18:24:23,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126986092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:23,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730616322] [2024-11-23 18:24:23,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:23,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:23,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:23,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:23,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:24:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:24,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:24:24,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:24:24,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:24,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730616322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:24,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:24,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-23 18:24:24,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998776153] [2024-11-23 18:24:24,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:24,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:24:24,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:24,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:24:24,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:24:24,398 INFO L87 Difference]: Start difference. First operand 662 states and 1106 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:24,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:24,593 INFO L93 Difference]: Finished difference Result 1333 states and 2228 transitions. [2024-11-23 18:24:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:24,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2024-11-23 18:24:24,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:24,600 INFO L225 Difference]: With dead ends: 1333 [2024-11-23 18:24:24,601 INFO L226 Difference]: Without dead ends: 683 [2024-11-23 18:24:24,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:24:24,605 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 100 mSDsluCounter, 4766 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5740 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:24,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5740 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-11-23 18:24:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 662. [2024-11-23 18:24:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 530 states have (on average 1.6962264150943396) internal successors, (899), 550 states have internal predecessors, (899), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-23 18:24:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1106 transitions. [2024-11-23 18:24:24,648 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1106 transitions. Word has length 104 [2024-11-23 18:24:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:24,648 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1106 transitions. [2024-11-23 18:24:24,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:24,648 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1106 transitions. [2024-11-23 18:24:24,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 18:24:24,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:24,652 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:24,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 18:24:24,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:24,852 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:24,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2075748807, now seen corresponding path program 1 times [2024-11-23 18:24:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73089389] [2024-11-23 18:24:24,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:24:24,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:24,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73089389] [2024-11-23 18:24:24,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73089389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:24,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873487526] [2024-11-23 18:24:24,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:24,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:24,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:24,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:25,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:24:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:25,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:24:25,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:25,422 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-23 18:24:25,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:25,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873487526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:25,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:25,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:24:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245311140] [2024-11-23 18:24:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:25,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:25,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:25,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:25,429 INFO L87 Difference]: Start difference. First operand 662 states and 1106 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 18:24:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:25,565 INFO L93 Difference]: Finished difference Result 1327 states and 2218 transitions. [2024-11-23 18:24:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:25,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2024-11-23 18:24:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:25,574 INFO L225 Difference]: With dead ends: 1327 [2024-11-23 18:24:25,575 INFO L226 Difference]: Without dead ends: 673 [2024-11-23 18:24:25,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:25,579 INFO L435 NwaCegarLoop]: 975 mSDtfsCounter, 12 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:25,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2916 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-23 18:24:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 671. [2024-11-23 18:24:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-23 18:24:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-23 18:24:25,626 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 104 [2024-11-23 18:24:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:25,627 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-23 18:24:25,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 18:24:25,627 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-23 18:24:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-23 18:24:25,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:25,634 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:25,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:25,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:25,835 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:25,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1179758736, now seen corresponding path program 1 times [2024-11-23 18:24:25,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:25,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922163975] [2024-11-23 18:24:25,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:25,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:24:26,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922163975] [2024-11-23 18:24:26,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922163975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227772515] [2024-11-23 18:24:26,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:26,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:26,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:26,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:26,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 18:24:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:26,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:24:26,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:24:26,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:26,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227772515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:26,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:26,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-23 18:24:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100037008] [2024-11-23 18:24:26,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:26,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:24:26,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:26,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:24:26,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:24:26,623 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:26,796 INFO L93 Difference]: Finished difference Result 1342 states and 2231 transitions. [2024-11-23 18:24:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:26,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2024-11-23 18:24:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:26,804 INFO L225 Difference]: With dead ends: 1342 [2024-11-23 18:24:26,804 INFO L226 Difference]: Without dead ends: 694 [2024-11-23 18:24:26,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:24:26,808 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 111 mSDsluCounter, 4754 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5728 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:26,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5728 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-11-23 18:24:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 671. [2024-11-23 18:24:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-23 18:24:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-23 18:24:26,846 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 105 [2024-11-23 18:24:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:26,846 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-23 18:24:26,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-23 18:24:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-23 18:24:26,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:26,849 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:26,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 18:24:27,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:27,051 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:27,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash 182637115, now seen corresponding path program 1 times [2024-11-23 18:24:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:27,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628956335] [2024-11-23 18:24:27,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:24:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628956335] [2024-11-23 18:24:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628956335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139809055] [2024-11-23 18:24:27,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:27,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:27,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:27,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 18:24:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:27,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:24:27,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:24:27,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:27,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139809055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:27,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:27,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-23 18:24:27,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033256681] [2024-11-23 18:24:27,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:27,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:24:27,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:27,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:24:27,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:24:27,740 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:24:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:27,983 INFO L93 Difference]: Finished difference Result 1345 states and 2235 transitions. [2024-11-23 18:24:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:24:27,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-11-23 18:24:27,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:27,991 INFO L225 Difference]: With dead ends: 1345 [2024-11-23 18:24:27,991 INFO L226 Difference]: Without dead ends: 697 [2024-11-23 18:24:27,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:24:27,995 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 95 mSDsluCounter, 5687 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6651 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:27,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6651 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-23 18:24:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 671. [2024-11-23 18:24:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-23 18:24:28,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-23 18:24:28,039 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 89 [2024-11-23 18:24:28,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:28,039 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-23 18:24:28,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:24:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-23 18:24:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 18:24:28,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:28,043 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:28,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:28,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:28,243 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:28,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash -112908964, now seen corresponding path program 1 times [2024-11-23 18:24:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:28,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925852697] [2024-11-23 18:24:28,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:24:28,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:28,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925852697] [2024-11-23 18:24:28,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925852697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:28,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126227778] [2024-11-23 18:24:28,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:28,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:28,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:28,438 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:28,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 18:24:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:28,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:24:28,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:24:28,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:28,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126227778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:28,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:28,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-23 18:24:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468691069] [2024-11-23 18:24:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:28,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:24:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:28,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:24:28,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:24:28,878 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:24:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:29,129 INFO L93 Difference]: Finished difference Result 1345 states and 2235 transitions. [2024-11-23 18:24:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:24:29,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2024-11-23 18:24:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:29,137 INFO L225 Difference]: With dead ends: 1345 [2024-11-23 18:24:29,137 INFO L226 Difference]: Without dead ends: 697 [2024-11-23 18:24:29,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:24:29,142 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 105 mSDsluCounter, 5675 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6639 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:29,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6639 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:24:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-23 18:24:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 671. [2024-11-23 18:24:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-23 18:24:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-23 18:24:29,175 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 90 [2024-11-23 18:24:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:29,176 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-23 18:24:29,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:24:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-23 18:24:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 18:24:29,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:29,179 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:29,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 18:24:29,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:29,380 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:29,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:29,381 INFO L85 PathProgramCache]: Analyzing trace with hash 569680160, now seen corresponding path program 1 times [2024-11-23 18:24:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737453175] [2024-11-23 18:24:29,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:29,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:24:29,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:29,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737453175] [2024-11-23 18:24:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737453175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:29,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358965862] [2024-11-23 18:24:29,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:29,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:29,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:29,562 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:29,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 18:24:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:29,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:24:29,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:24:30,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:30,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358965862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:30,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:30,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-23 18:24:30,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993045115] [2024-11-23 18:24:30,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:30,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:24:30,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:30,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:24:30,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:24:30,014 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:24:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:30,287 INFO L93 Difference]: Finished difference Result 1336 states and 2220 transitions. [2024-11-23 18:24:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:24:30,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 91 [2024-11-23 18:24:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:30,297 INFO L225 Difference]: With dead ends: 1336 [2024-11-23 18:24:30,298 INFO L226 Difference]: Without dead ends: 688 [2024-11-23 18:24:30,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:24:30,305 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 115 mSDsluCounter, 5663 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6627 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:30,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6627 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:24:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-23 18:24:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 671. [2024-11-23 18:24:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.687732342007435) internal successors, (908), 558 states have internal predecessors, (908), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-23 18:24:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1114 transitions. [2024-11-23 18:24:30,348 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1114 transitions. Word has length 91 [2024-11-23 18:24:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:30,348 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1114 transitions. [2024-11-23 18:24:30,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:24:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1114 transitions. [2024-11-23 18:24:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 18:24:30,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:30,354 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:30,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 18:24:30,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 18:24:30,555 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:30,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:30,555 INFO L85 PathProgramCache]: Analyzing trace with hash 691155582, now seen corresponding path program 1 times [2024-11-23 18:24:30,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:30,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049884209] [2024-11-23 18:24:30,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:30,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:24:30,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:30,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049884209] [2024-11-23 18:24:30,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049884209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:30,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135752544] [2024-11-23 18:24:30,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:30,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:30,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:30,647 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:30,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 18:24:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:30,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:24:30,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 18:24:31,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:31,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135752544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:31,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:31,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:24:31,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362255514] [2024-11-23 18:24:31,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:31,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:31,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:31,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:31,023 INFO L87 Difference]: Start difference. First operand 671 states and 1114 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:24:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:31,125 INFO L93 Difference]: Finished difference Result 1308 states and 2180 transitions. [2024-11-23 18:24:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-11-23 18:24:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:31,134 INFO L225 Difference]: With dead ends: 1308 [2024-11-23 18:24:31,134 INFO L226 Difference]: Without dead ends: 671 [2024-11-23 18:24:31,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:31,155 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 20 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:31,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2910 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-23 18:24:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2024-11-23 18:24:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 538 states have (on average 1.678438661710037) internal successors, (903), 558 states have internal predecessors, (903), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-23 18:24:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1109 transitions. [2024-11-23 18:24:31,186 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1109 transitions. Word has length 91 [2024-11-23 18:24:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:31,187 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1109 transitions. [2024-11-23 18:24:31,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:24:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1109 transitions. [2024-11-23 18:24:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 18:24:31,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:31,191 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:31,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 18:24:31,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 18:24:31,392 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:31,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash -475617040, now seen corresponding path program 1 times [2024-11-23 18:24:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237245298] [2024-11-23 18:24:31,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:31,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:24:31,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:31,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237245298] [2024-11-23 18:24:31,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237245298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:31,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407631168] [2024-11-23 18:24:31,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:31,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:31,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:31,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 18:24:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:31,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:24:31,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 18:24:31,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:31,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407631168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:31,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:31,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:24:31,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911090126] [2024-11-23 18:24:31,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:31,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:31,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:31,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:31,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:31,933 INFO L87 Difference]: Start difference. First operand 671 states and 1109 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 18:24:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:32,182 INFO L93 Difference]: Finished difference Result 1337 states and 2220 transitions. [2024-11-23 18:24:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:32,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2024-11-23 18:24:32,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:32,191 INFO L225 Difference]: With dead ends: 1337 [2024-11-23 18:24:32,191 INFO L226 Difference]: Without dead ends: 758 [2024-11-23 18:24:32,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:32,195 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 171 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:32,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2782 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:24:32,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-23 18:24:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 716. [2024-11-23 18:24:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 582 states have (on average 1.6958762886597938) internal successors, (987), 602 states have internal predecessors, (987), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-23 18:24:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1192 transitions. [2024-11-23 18:24:32,233 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1192 transitions. Word has length 108 [2024-11-23 18:24:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:32,234 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 1192 transitions. [2024-11-23 18:24:32,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 18:24:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1192 transitions. [2024-11-23 18:24:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-23 18:24:32,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:32,238 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:32,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 18:24:32,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:32,439 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:32,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 91583882, now seen corresponding path program 1 times [2024-11-23 18:24:32,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:32,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279096510] [2024-11-23 18:24:32,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:24:32,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:32,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279096510] [2024-11-23 18:24:32,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279096510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294967648] [2024-11-23 18:24:32,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:32,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:32,530 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:32,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 18:24:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:32,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:24:32,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 18:24:32,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:32,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294967648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:32,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:32,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-23 18:24:32,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439940032] [2024-11-23 18:24:32,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:32,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:24:32,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:32,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:24:32,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:24:32,956 INFO L87 Difference]: Start difference. First operand 716 states and 1192 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:24:33,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:33,098 INFO L93 Difference]: Finished difference Result 1330 states and 2207 transitions. [2024-11-23 18:24:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:33,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-11-23 18:24:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:33,108 INFO L225 Difference]: With dead ends: 1330 [2024-11-23 18:24:33,109 INFO L226 Difference]: Without dead ends: 751 [2024-11-23 18:24:33,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:33,115 INFO L435 NwaCegarLoop]: 975 mSDtfsCounter, 89 mSDsluCounter, 4786 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5761 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:33,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5761 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:33,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-23 18:24:33,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 729. [2024-11-23 18:24:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6925675675675675) internal successors, (1002), 614 states have internal predecessors, (1002), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-23 18:24:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1211 transitions. [2024-11-23 18:24:33,153 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1211 transitions. Word has length 93 [2024-11-23 18:24:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:33,153 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1211 transitions. [2024-11-23 18:24:33,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:24:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1211 transitions. [2024-11-23 18:24:33,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 18:24:33,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:33,156 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:33,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 18:24:33,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:33,358 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:33,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1921160586, now seen corresponding path program 1 times [2024-11-23 18:24:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073096980] [2024-11-23 18:24:33,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 18:24:33,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:33,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073096980] [2024-11-23 18:24:33,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073096980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310964623] [2024-11-23 18:24:33,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:33,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:33,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:33,467 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:33,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 18:24:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:33,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:24:33,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 18:24:33,909 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310964623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:33,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:33,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-23 18:24:33,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307988320] [2024-11-23 18:24:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:33,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:24:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:33,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:24:33,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:24:33,911 INFO L87 Difference]: Start difference. First operand 729 states and 1211 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:34,069 INFO L93 Difference]: Finished difference Result 1339 states and 2221 transitions. [2024-11-23 18:24:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-23 18:24:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:34,077 INFO L225 Difference]: With dead ends: 1339 [2024-11-23 18:24:34,077 INFO L226 Difference]: Without dead ends: 760 [2024-11-23 18:24:34,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:34,081 INFO L435 NwaCegarLoop]: 975 mSDtfsCounter, 100 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5749 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:34,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5749 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-23 18:24:34,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 729. [2024-11-23 18:24:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6925675675675675) internal successors, (1002), 614 states have internal predecessors, (1002), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-23 18:24:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1211 transitions. [2024-11-23 18:24:34,119 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1211 transitions. Word has length 110 [2024-11-23 18:24:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:34,119 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1211 transitions. [2024-11-23 18:24:34,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1211 transitions. [2024-11-23 18:24:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 18:24:34,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:34,122 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:34,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:34,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:34,323 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:34,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash -278305034, now seen corresponding path program 1 times [2024-11-23 18:24:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:34,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788245590] [2024-11-23 18:24:34,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 18:24:34,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788245590] [2024-11-23 18:24:34,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788245590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853813406] [2024-11-23 18:24:34,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:34,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:34,424 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:34,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 18:24:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:34,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:24:34,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 18:24:34,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853813406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:34,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:34,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 18:24:34,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177844027] [2024-11-23 18:24:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:34,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:24:34,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:34,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:24:34,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:34,889 INFO L87 Difference]: Start difference. First operand 729 states and 1211 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:35,109 INFO L93 Difference]: Finished difference Result 1342 states and 2224 transitions. [2024-11-23 18:24:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:24:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-23 18:24:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:35,117 INFO L225 Difference]: With dead ends: 1342 [2024-11-23 18:24:35,117 INFO L226 Difference]: Without dead ends: 763 [2024-11-23 18:24:35,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:24:35,121 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 96 mSDsluCounter, 5696 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6661 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:35,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6661 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-23 18:24:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 729. [2024-11-23 18:24:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6925675675675675) internal successors, (1002), 614 states have internal predecessors, (1002), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-23 18:24:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1211 transitions. [2024-11-23 18:24:35,160 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1211 transitions. Word has length 110 [2024-11-23 18:24:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:35,160 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1211 transitions. [2024-11-23 18:24:35,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1211 transitions. [2024-11-23 18:24:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 18:24:35,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:35,163 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:35,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 18:24:35,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 18:24:35,364 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:35,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:35,365 INFO L85 PathProgramCache]: Analyzing trace with hash 903316865, now seen corresponding path program 1 times [2024-11-23 18:24:35,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:35,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132186196] [2024-11-23 18:24:35,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:35,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:24:35,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:35,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132186196] [2024-11-23 18:24:35,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132186196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:35,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893902749] [2024-11-23 18:24:35,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:35,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:35,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:35,470 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:35,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 18:24:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:35,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:24:35,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 18:24:35,823 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:35,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893902749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:35,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:24:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019858601] [2024-11-23 18:24:35,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:35,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:35,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:35,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:35,825 INFO L87 Difference]: Start difference. First operand 729 states and 1211 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:24:35,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:35,887 INFO L93 Difference]: Finished difference Result 1384 states and 2303 transitions. [2024-11-23 18:24:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:24:35,888 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2024-11-23 18:24:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:35,894 INFO L225 Difference]: With dead ends: 1384 [2024-11-23 18:24:35,894 INFO L226 Difference]: Without dead ends: 729 [2024-11-23 18:24:35,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:35,897 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 2 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:35,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2919 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-23 18:24:35,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 729. [2024-11-23 18:24:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6875) internal successors, (999), 614 states have internal predecessors, (999), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-23 18:24:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1208 transitions. [2024-11-23 18:24:35,932 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1208 transitions. Word has length 94 [2024-11-23 18:24:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:35,934 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1208 transitions. [2024-11-23 18:24:35,934 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:24:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1208 transitions. [2024-11-23 18:24:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 18:24:35,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:35,938 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:35,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 18:24:36,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 18:24:36,138 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:36,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash -244957309, now seen corresponding path program 1 times [2024-11-23 18:24:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:36,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796823560] [2024-11-23 18:24:36,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:36,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 18:24:36,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796823560] [2024-11-23 18:24:36,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796823560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71457432] [2024-11-23 18:24:36,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:36,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:36,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:36,242 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:36,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 18:24:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:36,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:24:36,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 18:24:36,720 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:36,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71457432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:36,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:36,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 18:24:36,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201437604] [2024-11-23 18:24:36,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:36,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:24:36,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:36,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:24:36,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:36,723 INFO L87 Difference]: Start difference. First operand 729 states and 1208 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:37,026 INFO L93 Difference]: Finished difference Result 1333 states and 2207 transitions. [2024-11-23 18:24:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:24:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2024-11-23 18:24:37,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:37,036 INFO L225 Difference]: With dead ends: 1333 [2024-11-23 18:24:37,036 INFO L226 Difference]: Without dead ends: 754 [2024-11-23 18:24:37,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:24:37,040 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 106 mSDsluCounter, 5669 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6631 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:37,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6631 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:24:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-23 18:24:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 729. [2024-11-23 18:24:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 592 states have (on average 1.6875) internal successors, (999), 614 states have internal predecessors, (999), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-23 18:24:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1208 transitions. [2024-11-23 18:24:37,084 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1208 transitions. Word has length 111 [2024-11-23 18:24:37,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:37,084 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1208 transitions. [2024-11-23 18:24:37,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 18:24:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1208 transitions. [2024-11-23 18:24:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-23 18:24:37,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:37,088 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:37,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:37,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 18:24:37,289 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:37,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:37,290 INFO L85 PathProgramCache]: Analyzing trace with hash 684532644, now seen corresponding path program 1 times [2024-11-23 18:24:37,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:37,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105897458] [2024-11-23 18:24:37,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:24:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:37,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105897458] [2024-11-23 18:24:37,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105897458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:37,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248773722] [2024-11-23 18:24:37,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:37,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:37,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:37,396 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:37,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 18:24:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:37,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:24:37,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 18:24:37,992 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:37,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248773722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:37,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:37,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-23 18:24:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494249622] [2024-11-23 18:24:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:37,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:24:37,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:37,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:24:37,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:37,994 INFO L87 Difference]: Start difference. First operand 729 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:24:38,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:38,178 INFO L93 Difference]: Finished difference Result 1866 states and 3118 transitions. [2024-11-23 18:24:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:24:38,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2024-11-23 18:24:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:38,189 INFO L225 Difference]: With dead ends: 1866 [2024-11-23 18:24:38,189 INFO L226 Difference]: Without dead ends: 1291 [2024-11-23 18:24:38,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:38,193 INFO L435 NwaCegarLoop]: 1048 mSDtfsCounter, 893 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:38,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1984 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2024-11-23 18:24:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1226. [2024-11-23 18:24:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 996 states have (on average 1.6927710843373494) internal successors, (1686), 1027 states have internal predecessors, (1686), 178 states have call successors, (178), 50 states have call predecessors, (178), 51 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2024-11-23 18:24:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 2049 transitions. [2024-11-23 18:24:38,274 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 2049 transitions. Word has length 96 [2024-11-23 18:24:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:38,274 INFO L471 AbstractCegarLoop]: Abstraction has 1226 states and 2049 transitions. [2024-11-23 18:24:38,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:24:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 2049 transitions. [2024-11-23 18:24:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:24:38,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:38,280 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:38,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-23 18:24:38,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 18:24:38,481 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:38,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:38,482 INFO L85 PathProgramCache]: Analyzing trace with hash 848880328, now seen corresponding path program 1 times [2024-11-23 18:24:38,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:38,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692277117] [2024-11-23 18:24:38,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:38,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:24:38,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:38,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692277117] [2024-11-23 18:24:38,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692277117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:38,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760557137] [2024-11-23 18:24:38,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:38,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:38,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:38,583 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:38,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 18:24:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:38,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:24:38,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:24:39,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:39,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760557137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:39,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:39,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 18:24:39,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428589188] [2024-11-23 18:24:39,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:39,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:39,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:39,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:39,004 INFO L87 Difference]: Start difference. First operand 1226 states and 2049 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:24:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:39,085 INFO L93 Difference]: Finished difference Result 2340 states and 3933 transitions. [2024-11-23 18:24:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2024-11-23 18:24:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:39,096 INFO L225 Difference]: With dead ends: 2340 [2024-11-23 18:24:39,096 INFO L226 Difference]: Without dead ends: 1268 [2024-11-23 18:24:39,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:39,102 INFO L435 NwaCegarLoop]: 1005 mSDtfsCounter, 54 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:39,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2955 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:39,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2024-11-23 18:24:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2024-11-23 18:24:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1036 states have (on average 1.693050193050193) internal successors, (1754), 1067 states have internal predecessors, (1754), 178 states have call successors, (178), 52 states have call predecessors, (178), 53 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2024-11-23 18:24:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 2117 transitions. [2024-11-23 18:24:39,176 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 2117 transitions. Word has length 134 [2024-11-23 18:24:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:39,176 INFO L471 AbstractCegarLoop]: Abstraction has 1268 states and 2117 transitions. [2024-11-23 18:24:39,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:24:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 2117 transitions. [2024-11-23 18:24:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:24:39,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:39,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:39,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-23 18:24:39,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:39,387 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:39,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1239688855, now seen corresponding path program 1 times [2024-11-23 18:24:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534158307] [2024-11-23 18:24:39,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 18:24:39,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:39,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534158307] [2024-11-23 18:24:39,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534158307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:39,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004229462] [2024-11-23 18:24:39,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:39,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:39,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:39,512 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:39,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 18:24:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:39,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:24:39,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 18:24:39,966 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004229462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:39,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:39,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-23 18:24:39,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247567752] [2024-11-23 18:24:39,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:39,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:39,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:39,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:39,970 INFO L87 Difference]: Start difference. First operand 1268 states and 2117 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 18:24:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:41,396 INFO L93 Difference]: Finished difference Result 4484 states and 7675 transitions. [2024-11-23 18:24:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:24:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2024-11-23 18:24:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:41,425 INFO L225 Difference]: With dead ends: 4484 [2024-11-23 18:24:41,426 INFO L226 Difference]: Without dead ends: 3370 [2024-11-23 18:24:41,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:24:41,435 INFO L435 NwaCegarLoop]: 1067 mSDtfsCounter, 2449 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:41,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2449 Valid, 3315 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 18:24:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2024-11-23 18:24:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3350. [2024-11-23 18:24:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 2726 states have (on average 1.6647101980924432) internal successors, (4538), 2807 states have internal predecessors, (4538), 482 states have call successors, (482), 144 states have call predecessors, (482), 141 states have return successors, (609), 443 states have call predecessors, (609), 474 states have call successors, (609) [2024-11-23 18:24:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5629 transitions. [2024-11-23 18:24:41,639 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5629 transitions. Word has length 134 [2024-11-23 18:24:41,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:41,639 INFO L471 AbstractCegarLoop]: Abstraction has 3350 states and 5629 transitions. [2024-11-23 18:24:41,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 18:24:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5629 transitions. [2024-11-23 18:24:41,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:24:41,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:41,648 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:41,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-23 18:24:41,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:41,849 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:41,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:41,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1375309288, now seen corresponding path program 1 times [2024-11-23 18:24:41,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:41,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658593525] [2024-11-23 18:24:41,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:41,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:24:41,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:41,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658593525] [2024-11-23 18:24:41,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658593525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:41,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066502765] [2024-11-23 18:24:41,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:41,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:41,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:41,953 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:41,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 18:24:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:42,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:24:42,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 18:24:42,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066502765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:42,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:42,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 18:24:42,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619775788] [2024-11-23 18:24:42,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:42,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:42,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:42,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:42,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:24:42,350 INFO L87 Difference]: Start difference. First operand 3350 states and 5629 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:24:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:42,546 INFO L93 Difference]: Finished difference Result 6677 states and 11242 transitions. [2024-11-23 18:24:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:42,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2024-11-23 18:24:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:42,583 INFO L225 Difference]: With dead ends: 6677 [2024-11-23 18:24:42,583 INFO L226 Difference]: Without dead ends: 3315 [2024-11-23 18:24:42,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:42,601 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 7 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:42,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2911 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2024-11-23 18:24:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3315. [2024-11-23 18:24:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 2694 states have (on average 1.658129175946548) internal successors, (4467), 2773 states have internal predecessors, (4467), 481 states have call successors, (481), 144 states have call predecessors, (481), 139 states have return successors, (606), 442 states have call predecessors, (606), 473 states have call successors, (606) [2024-11-23 18:24:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 5554 transitions. [2024-11-23 18:24:42,772 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 5554 transitions. Word has length 134 [2024-11-23 18:24:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:42,772 INFO L471 AbstractCegarLoop]: Abstraction has 3315 states and 5554 transitions. [2024-11-23 18:24:42,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:24:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 5554 transitions. [2024-11-23 18:24:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:24:42,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:42,780 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:42,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-23 18:24:42,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:42,982 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:42,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash -750650236, now seen corresponding path program 1 times [2024-11-23 18:24:42,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:42,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876783051] [2024-11-23 18:24:42,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:24:43,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:43,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876783051] [2024-11-23 18:24:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876783051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060268285] [2024-11-23 18:24:43,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:43,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:43,163 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:43,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-23 18:24:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:43,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:24:43,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:24:43,721 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:43,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060268285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:43,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:43,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-23 18:24:43,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169447838] [2024-11-23 18:24:43,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:43,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:24:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:43,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:24:43,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:43,724 INFO L87 Difference]: Start difference. First operand 3315 states and 5554 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:24:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:43,983 INFO L93 Difference]: Finished difference Result 8530 states and 14371 transitions. [2024-11-23 18:24:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:43,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2024-11-23 18:24:43,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:44,037 INFO L225 Difference]: With dead ends: 8530 [2024-11-23 18:24:44,040 INFO L226 Difference]: Without dead ends: 5334 [2024-11-23 18:24:44,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:24:44,061 INFO L435 NwaCegarLoop]: 1367 mSDtfsCounter, 934 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 4652 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:44,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 4652 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2024-11-23 18:24:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5330. [2024-11-23 18:24:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 4364 states have (on average 1.6338221814848763) internal successors, (7130), 4452 states have internal predecessors, (7130), 730 states have call successors, (730), 246 states have call predecessors, (730), 235 states have return successors, (1065), 679 states have call predecessors, (1065), 716 states have call successors, (1065) [2024-11-23 18:24:44,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 8925 transitions. [2024-11-23 18:24:44,388 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 8925 transitions. Word has length 134 [2024-11-23 18:24:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:44,389 INFO L471 AbstractCegarLoop]: Abstraction has 5330 states and 8925 transitions. [2024-11-23 18:24:44,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:24:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 8925 transitions. [2024-11-23 18:24:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:24:44,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:44,398 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:44,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-23 18:24:44,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:44,599 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:44,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash 603480037, now seen corresponding path program 1 times [2024-11-23 18:24:44,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:44,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265343838] [2024-11-23 18:24:44,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:44,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:24:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:44,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265343838] [2024-11-23 18:24:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265343838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311767627] [2024-11-23 18:24:44,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:44,819 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:44,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-23 18:24:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:45,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 18:24:45,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-23 18:24:45,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311767627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:45,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:45,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-23 18:24:45,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775625064] [2024-11-23 18:24:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:45,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:24:45,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:45,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:24:45,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:45,283 INFO L87 Difference]: Start difference. First operand 5330 states and 8925 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 18:24:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:45,636 INFO L93 Difference]: Finished difference Result 10756 states and 17998 transitions. [2024-11-23 18:24:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:45,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2024-11-23 18:24:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:45,692 INFO L225 Difference]: With dead ends: 10756 [2024-11-23 18:24:45,692 INFO L226 Difference]: Without dead ends: 5443 [2024-11-23 18:24:45,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:24:45,719 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 122 mSDsluCounter, 4776 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5759 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:45,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5759 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5443 states. [2024-11-23 18:24:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5443 to 5323. [2024-11-23 18:24:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 4357 states have (on average 1.6327748450768877) internal successors, (7114), 4445 states have internal predecessors, (7114), 730 states have call successors, (730), 246 states have call predecessors, (730), 235 states have return successors, (1065), 679 states have call predecessors, (1065), 716 states have call successors, (1065) [2024-11-23 18:24:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 8909 transitions. [2024-11-23 18:24:45,991 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 8909 transitions. Word has length 135 [2024-11-23 18:24:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:45,992 INFO L471 AbstractCegarLoop]: Abstraction has 5323 states and 8909 transitions. [2024-11-23 18:24:45,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 18:24:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 8909 transitions. [2024-11-23 18:24:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 18:24:46,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:46,001 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:46,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-23 18:24:46,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c1b886e-b675-469f-b84f-0e890fca99f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 18:24:46,203 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:46,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1129294650, now seen corresponding path program 1 times [2024-11-23 18:24:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:46,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207373069] [2024-11-23 18:24:46,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:46,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 18:24:46,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:46,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207373069] [2024-11-23 18:24:46,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207373069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:46,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:46,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:24:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714796914] [2024-11-23 18:24:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:46,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:24:46,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:46,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:24:46,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:24:46,487 INFO L87 Difference]: Start difference. First operand 5323 states and 8909 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 18:24:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:46,776 INFO L93 Difference]: Finished difference Result 10660 states and 17846 transitions. [2024-11-23 18:24:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:46,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 136 [2024-11-23 18:24:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:46,823 INFO L225 Difference]: With dead ends: 10660 [2024-11-23 18:24:46,823 INFO L226 Difference]: Without dead ends: 5445 [2024-11-23 18:24:46,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:24:46,853 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 126 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5703 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:46,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5703 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:24:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2024-11-23 18:24:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 5323. [2024-11-23 18:24:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 4357 states have (on average 1.6327748450768877) internal successors, (7114), 4445 states have internal predecessors, (7114), 730 states have call successors, (730), 246 states have call predecessors, (730), 235 states have return successors, (1065), 679 states have call predecessors, (1065), 716 states have call successors, (1065) [2024-11-23 18:24:47,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 8909 transitions. [2024-11-23 18:24:47,193 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 8909 transitions. Word has length 136 [2024-11-23 18:24:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:47,194 INFO L471 AbstractCegarLoop]: Abstraction has 5323 states and 8909 transitions. [2024-11-23 18:24:47,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 18:24:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 8909 transitions. [2024-11-23 18:24:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 18:24:47,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:47,205 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:47,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 18:24:47,205 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:47,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash -990165794, now seen corresponding path program 1 times [2024-11-23 18:24:47,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:47,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054628612] [2024-11-23 18:24:47,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:47,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:24:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054628612] [2024-11-23 18:24:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054628612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:24:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182398808] [2024-11-23 18:24:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:47,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:24:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:47,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:24:47,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:24:47,357 INFO L87 Difference]: Start difference. First operand 5323 states and 8909 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:24:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:47,629 INFO L93 Difference]: Finished difference Result 10601 states and 17761 transitions. [2024-11-23 18:24:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:24:47,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2024-11-23 18:24:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:47,671 INFO L225 Difference]: With dead ends: 10601 [2024-11-23 18:24:47,671 INFO L226 Difference]: Without dead ends: 5281 [2024-11-23 18:24:47,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:24:47,698 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 8 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:47,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2910 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2024-11-23 18:24:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5281. [2024-11-23 18:24:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 4318 states have (on average 1.6306160259379343) internal successors, (7041), 4404 states have internal predecessors, (7041), 729 states have call successors, (729), 246 states have call predecessors, (729), 233 states have return successors, (1062), 678 states have call predecessors, (1062), 715 states have call successors, (1062) [2024-11-23 18:24:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 8832 transitions. [2024-11-23 18:24:47,982 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 8832 transitions. Word has length 136 [2024-11-23 18:24:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:47,982 INFO L471 AbstractCegarLoop]: Abstraction has 5281 states and 8832 transitions. [2024-11-23 18:24:47,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:24:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 8832 transitions. [2024-11-23 18:24:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-23 18:24:47,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:47,989 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:47,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 18:24:47,989 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:47,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash -982922919, now seen corresponding path program 1 times [2024-11-23 18:24:47,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:47,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137542134] [2024-11-23 18:24:47,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:24:48,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137542134] [2024-11-23 18:24:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137542134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:48,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:48,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:24:48,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525945930] [2024-11-23 18:24:48,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:48,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:24:48,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:48,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:24:48,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:48,172 INFO L87 Difference]: Start difference. First operand 5281 states and 8832 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-23 18:24:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:52,908 INFO L93 Difference]: Finished difference Result 14465 states and 25140 transitions. [2024-11-23 18:24:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:52,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 137 [2024-11-23 18:24:52,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:52,978 INFO L225 Difference]: With dead ends: 14465 [2024-11-23 18:24:52,978 INFO L226 Difference]: Without dead ends: 9254 [2024-11-23 18:24:53,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:53,020 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 4104 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 4271 mSolverCounterSat, 1149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 5420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1149 IncrementalHoareTripleChecker+Valid, 4271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:53,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 2070 Invalid, 5420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1149 Valid, 4271 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:24:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9254 states. [2024-11-23 18:24:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9254 to 8679. [2024-11-23 18:24:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8679 states, 6863 states have (on average 1.6026519015008014) internal successors, (10999), 7078 states have internal predecessors, (10999), 1432 states have call successors, (1432), 372 states have call predecessors, (1432), 383 states have return successors, (2136), 1384 states have call predecessors, (2136), 1412 states have call successors, (2136) [2024-11-23 18:24:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8679 states to 8679 states and 14567 transitions. [2024-11-23 18:24:53,481 INFO L78 Accepts]: Start accepts. Automaton has 8679 states and 14567 transitions. Word has length 137 [2024-11-23 18:24:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:53,481 INFO L471 AbstractCegarLoop]: Abstraction has 8679 states and 14567 transitions. [2024-11-23 18:24:53,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-23 18:24:53,482 INFO L276 IsEmpty]: Start isEmpty. Operand 8679 states and 14567 transitions. [2024-11-23 18:24:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-23 18:24:53,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:53,489 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:53,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 18:24:53,491 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:53,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash 364860418, now seen corresponding path program 1 times [2024-11-23 18:24:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:53,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821386816] [2024-11-23 18:24:53,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:53,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:24:53,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:53,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821386816] [2024-11-23 18:24:53,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821386816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:53,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:24:53,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:24:53,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223103466] [2024-11-23 18:24:53,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:53,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:24:53,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:53,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:24:53,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:24:53,757 INFO L87 Difference]: Start difference. First operand 8679 states and 14567 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-23 18:24:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:58,701 INFO L93 Difference]: Finished difference Result 27533 states and 48840 transitions. [2024-11-23 18:24:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:24:58,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 138 [2024-11-23 18:24:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:58,885 INFO L225 Difference]: With dead ends: 27533 [2024-11-23 18:24:58,885 INFO L226 Difference]: Without dead ends: 18924 [2024-11-23 18:24:58,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:24:58,987 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 4142 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 4236 mSolverCounterSat, 1186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 4236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:58,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 2090 Invalid, 5422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 4236 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-23 18:24:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2024-11-23 18:25:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 17076. [2024-11-23 18:25:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17076 states, 12795 states have (on average 1.5741305197342712) internal successors, (20141), 13379 states have internal predecessors, (20141), 3555 states have call successors, (3555), 624 states have call predecessors, (3555), 725 states have return successors, (5541), 3555 states have call predecessors, (5541), 3523 states have call successors, (5541) [2024-11-23 18:25:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17076 states to 17076 states and 29237 transitions. [2024-11-23 18:25:00,490 INFO L78 Accepts]: Start accepts. Automaton has 17076 states and 29237 transitions. Word has length 138 [2024-11-23 18:25:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:00,491 INFO L471 AbstractCegarLoop]: Abstraction has 17076 states and 29237 transitions. [2024-11-23 18:25:00,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-23 18:25:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 17076 states and 29237 transitions. [2024-11-23 18:25:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:25:00,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:00,499 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:25:00,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 18:25:00,500 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:00,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:00,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1252646316, now seen corresponding path program 1 times [2024-11-23 18:25:00,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:00,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905382782] [2024-11-23 18:25:00,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:00,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:25:00,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:00,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905382782] [2024-11-23 18:25:00,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905382782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:00,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:00,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:25:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267716831] [2024-11-23 18:25:00,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:00,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:25:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:00,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:25:00,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:25:00,729 INFO L87 Difference]: Start difference. First operand 17076 states and 29237 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-23 18:25:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:08,165 INFO L93 Difference]: Finished difference Result 61880 states and 114271 transitions. [2024-11-23 18:25:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:25:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 139 [2024-11-23 18:25:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:08,568 INFO L225 Difference]: With dead ends: 61880 [2024-11-23 18:25:08,568 INFO L226 Difference]: Without dead ends: 44874 [2024-11-23 18:25:08,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:25:08,808 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 4151 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 4249 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 5426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 4249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:08,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 2144 Invalid, 5426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1177 Valid, 4249 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:25:08,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44874 states. [2024-11-23 18:25:12,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44874 to 39330. [2024-11-23 18:25:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39330 states, 27638 states have (on average 1.546276865185614) internal successors, (42736), 29308 states have internal predecessors, (42736), 10126 states have call successors, (10126), 1128 states have call predecessors, (10126), 1565 states have return successors, (16980), 10375 states have call predecessors, (16980), 10070 states have call successors, (16980) [2024-11-23 18:25:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39330 states to 39330 states and 69842 transitions. [2024-11-23 18:25:13,566 INFO L78 Accepts]: Start accepts. Automaton has 39330 states and 69842 transitions. Word has length 139 [2024-11-23 18:25:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:13,570 INFO L471 AbstractCegarLoop]: Abstraction has 39330 states and 69842 transitions. [2024-11-23 18:25:13,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-23 18:25:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 39330 states and 69842 transitions. [2024-11-23 18:25:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 18:25:13,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:13,577 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:25:13,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 18:25:13,578 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:13,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash -304864739, now seen corresponding path program 1 times [2024-11-23 18:25:13,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:13,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854543496] [2024-11-23 18:25:13,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:13,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:25:14,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:14,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854543496] [2024-11-23 18:25:14,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854543496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:14,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:14,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:25:14,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714532680] [2024-11-23 18:25:14,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:14,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:25:14,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:14,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:25:14,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:25:14,096 INFO L87 Difference]: Start difference. First operand 39330 states and 69842 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-23 18:25:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:27,012 INFO L93 Difference]: Finished difference Result 158612 states and 307697 transitions. [2024-11-23 18:25:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:25:27,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 140 [2024-11-23 18:25:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:28,574 INFO L225 Difference]: With dead ends: 158612 [2024-11-23 18:25:28,574 INFO L226 Difference]: Without dead ends: 119352 [2024-11-23 18:25:29,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:25:29,229 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 4200 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 1201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4241 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1201 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:29,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4241 Valid, 2153 Invalid, 5453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1201 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 18:25:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119352 states.