./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:26:45,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:26:45,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:26:45,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:26:45,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:26:45,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:26:45,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:26:45,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:26:45,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:26:45,827 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:26:45,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:26:45,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:26:45,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:26:45,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:26:45,828 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:26:45,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:26:45,828 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:26:45,828 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:26:45,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:26:45,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:26:45,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:26:45,829 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:26:45,829 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:26:45,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:26:45,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:26:45,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:26:45,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:26:45,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:26:45,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:26:45,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:26:45,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:26:45,831 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_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec740d4c0b0b941516a7691cfe22f258e1a0e4fdd205bb4a0c04151c297a8c86 [2024-12-02 07:26:46,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:26:46,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:26:46,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:26:46,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:26:46,077 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:26:46,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2024-12-02 07:26:48,727 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/data/ea2bae27f/4ad699ec75194b6c8272bbfdf820bdb9/FLAG0b4c98b7f [2024-12-02 07:26:49,027 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:26:49,028 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c [2024-12-02 07:26:49,045 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/data/ea2bae27f/4ad699ec75194b6c8272bbfdf820bdb9/FLAG0b4c98b7f [2024-12-02 07:26:49,313 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/data/ea2bae27f/4ad699ec75194b6c8272bbfdf820bdb9 [2024-12-02 07:26:49,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:26:49,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:26:49,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:26:49,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:26:49,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:26:49,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205422bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49, skipping insertion in model container [2024-12-02 07:26:49,322 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,361 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:26:49,620 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_1123644f-ad6d-411f-bae3-cfe5d3620371/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2024-12-02 07:26:49,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:26:49,730 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:26:49,736 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-12-02 07:26:49,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [414] [2024-12-02 07:26:49,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [514] [2024-12-02 07:26:49,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [704] [2024-12-02 07:26:49,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1371] [2024-12-02 07:26:49,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1389] [2024-12-02 07:26:49,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1427] [2024-12-02 07:26:49,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1436] [2024-12-02 07:26:49,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2938] [2024-12-02 07:26:49,738 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3057] [2024-12-02 07:26:49,780 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_1123644f-ad6d-411f-bae3-cfe5d3620371/sv-benchmarks/c/product-lines/elevator_spec3_product03.cil.c[33356,33369] [2024-12-02 07:26:49,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:26:49,844 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:26:49,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49 WrapperNode [2024-12-02 07:26:49,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:26:49,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:26:49,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:26:49,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:26:49,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,905 INFO L138 Inliner]: procedures = 90, calls = 342, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 1041 [2024-12-02 07:26:49,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:26:49,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:26:49,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:26:49,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:26:49,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,941 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 07:26:49,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,959 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:26:49,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:26:49,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:26:49,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:26:49,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (1/1) ... [2024-12-02 07:26:49,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:26:50,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:26:50,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:26:50,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:26:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:26:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 07:26:50,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 07:26:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 07:26:50,045 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 07:26:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 07:26:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 07:26:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 07:26:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 07:26:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 07:26:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 07:26:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 07:26:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 07:26:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 07:26:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 07:26:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 07:26:50,046 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 07:26:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 07:26:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 07:26:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 07:26:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 07:26:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 07:26:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 07:26:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 07:26:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 07:26:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 07:26:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 07:26:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 07:26:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 07:26:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 07:26:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 07:26:50,047 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 07:26:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 07:26:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 07:26:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 07:26:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 07:26:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2024-12-02 07:26:50,048 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:26:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 07:26:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 07:26:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 07:26:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 07:26:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 07:26:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 07:26:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 07:26:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 07:26:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 07:26:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:26:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:26:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 07:26:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 07:26:50,218 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:26:50,220 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:26:51,295 INFO L? ?]: Removed 439 outVars from TransFormulas that were not future-live. [2024-12-02 07:26:51,296 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:26:51,317 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:26:51,317 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:26:51,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:51 BoogieIcfgContainer [2024-12-02 07:26:51,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:26:51,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:26:51,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:26:51,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:26:51,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:26:49" (1/3) ... [2024-12-02 07:26:51,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1451afc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:26:51, skipping insertion in model container [2024-12-02 07:26:51,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:26:49" (2/3) ... [2024-12-02 07:26:51,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1451afc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:26:51, skipping insertion in model container [2024-12-02 07:26:51,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:26:51" (3/3) ... [2024-12-02 07:26:51,326 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2024-12-02 07:26:51,341 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:26:51,343 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product03.cil.c that has 27 procedures, 573 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:26:51,406 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:26:51,417 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;@6c207547, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:26:51,417 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:26:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 573 states, 439 states have (on average 1.674259681093394) internal successors, (735), 457 states have internal predecessors, (735), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2024-12-02 07:26:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 07:26:51,443 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:51,444 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:51,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:51,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1083480658, now seen corresponding path program 1 times [2024-12-02 07:26:51,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544961758] [2024-12-02 07:26:51,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:51,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:52,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544961758] [2024-12-02 07:26:52,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544961758] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:52,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:52,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:26:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418283293] [2024-12-02 07:26:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:52,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:26:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:52,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:26:52,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:52,177 INFO L87 Difference]: Start difference. First operand has 573 states, 439 states have (on average 1.674259681093394) internal successors, (735), 457 states have internal predecessors, (735), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-12-02 07:26:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:52,412 INFO L93 Difference]: Finished difference Result 1143 states and 1906 transitions. [2024-12-02 07:26:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:26:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 113 [2024-12-02 07:26:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:52,430 INFO L225 Difference]: With dead ends: 1143 [2024-12-02 07:26:52,430 INFO L226 Difference]: Without dead ends: 578 [2024-12-02 07:26:52,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:26:52,441 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 91 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5506 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:52,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5506 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:26:52,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-12-02 07:26:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 576. [2024-12-02 07:26:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 442 states have (on average 1.665158371040724) internal successors, (736), 460 states have internal predecessors, (736), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-12-02 07:26:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 949 transitions. [2024-12-02 07:26:52,531 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 949 transitions. Word has length 113 [2024-12-02 07:26:52,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:52,532 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 949 transitions. [2024-12-02 07:26:52,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-12-02 07:26:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 949 transitions. [2024-12-02 07:26:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 07:26:52,539 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:52,540 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:52,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:26:52,540 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:52,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:52,541 INFO L85 PathProgramCache]: Analyzing trace with hash 751432586, now seen corresponding path program 1 times [2024-12-02 07:26:52,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:52,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799579518] [2024-12-02 07:26:52,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:52,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:52,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:52,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799579518] [2024-12-02 07:26:52,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799579518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:52,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:52,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:26:52,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539877886] [2024-12-02 07:26:52,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:52,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:26:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:52,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:26:52,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:52,779 INFO L87 Difference]: Start difference. First operand 576 states and 949 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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) [2024-12-02 07:26:52,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:52,848 INFO L93 Difference]: Finished difference Result 1134 states and 1879 transitions. [2024-12-02 07:26:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:26:52,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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 114 [2024-12-02 07:26:52,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:52,853 INFO L225 Difference]: With dead ends: 1134 [2024-12-02 07:26:52,853 INFO L226 Difference]: Without dead ends: 552 [2024-12-02 07:26:52,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:26:52,857 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 14 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:52,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2752 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-12-02 07:26:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2024-12-02 07:26:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 421 states have (on average 1.655581947743468) internal successors, (697), 437 states have internal predecessors, (697), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 906 transitions. [2024-12-02 07:26:52,888 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 906 transitions. Word has length 114 [2024-12-02 07:26:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:52,888 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 906 transitions. [2024-12-02 07:26:52,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (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) [2024-12-02 07:26:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 906 transitions. [2024-12-02 07:26:52,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 07:26:52,892 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:52,892 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:52,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:26:52,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:52,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1320452620, now seen corresponding path program 1 times [2024-12-02 07:26:52,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:52,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109523044] [2024-12-02 07:26:52,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:52,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:53,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:53,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109523044] [2024-12-02 07:26:53,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109523044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:53,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:53,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:26:53,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338262533] [2024-12-02 07:26:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:53,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:26:53,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:53,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:26:53,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:53,200 INFO L87 Difference]: Start difference. First operand 552 states and 906 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-12-02 07:26:53,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:53,299 INFO L93 Difference]: Finished difference Result 1097 states and 1811 transitions. [2024-12-02 07:26:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:26:53,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 114 [2024-12-02 07:26:53,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:53,304 INFO L225 Difference]: With dead ends: 1097 [2024-12-02 07:26:53,304 INFO L226 Difference]: Without dead ends: 546 [2024-12-02 07:26:53,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:26:53,308 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 77 mSDsluCounter, 4405 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:53,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5300 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-12-02 07:26:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2024-12-02 07:26:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 415 states have (on average 1.6481927710843374) internal successors, (684), 431 states have internal predecessors, (684), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 893 transitions. [2024-12-02 07:26:53,336 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 893 transitions. Word has length 114 [2024-12-02 07:26:53,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:53,337 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 893 transitions. [2024-12-02 07:26:53,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-12-02 07:26:53,337 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 893 transitions. [2024-12-02 07:26:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 07:26:53,340 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:53,340 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:53,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:26:53,340 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:53,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:53,341 INFO L85 PathProgramCache]: Analyzing trace with hash -496010314, now seen corresponding path program 1 times [2024-12-02 07:26:53,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:53,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671513680] [2024-12-02 07:26:53,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:53,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:53,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671513680] [2024-12-02 07:26:53,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671513680] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:53,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:53,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:26:53,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022977049] [2024-12-02 07:26:53,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:53,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:26:53,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:53,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:26:53,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:53,602 INFO L87 Difference]: Start difference. First operand 546 states and 893 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (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) [2024-12-02 07:26:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:53,697 INFO L93 Difference]: Finished difference Result 1085 states and 1785 transitions. [2024-12-02 07:26:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:26:53,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (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 115 [2024-12-02 07:26:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:53,702 INFO L225 Difference]: With dead ends: 1085 [2024-12-02 07:26:53,702 INFO L226 Difference]: Without dead ends: 540 [2024-12-02 07:26:53,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:26:53,706 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 63 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5240 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:53,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5240 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-12-02 07:26:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2024-12-02 07:26:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 409 states have (on average 1.6405867970660146) internal successors, (671), 425 states have internal predecessors, (671), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:53,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 880 transitions. [2024-12-02 07:26:53,735 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 880 transitions. Word has length 115 [2024-12-02 07:26:53,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:53,735 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 880 transitions. [2024-12-02 07:26:53,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (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) [2024-12-02 07:26:53,735 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 880 transitions. [2024-12-02 07:26:53,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 07:26:53,738 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:53,738 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:53,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:26:53,739 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:53,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1623827288, now seen corresponding path program 1 times [2024-12-02 07:26:53,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:53,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345169780] [2024-12-02 07:26:53,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:53,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:53,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:53,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345169780] [2024-12-02 07:26:53,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345169780] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:53,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:53,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:26:53,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445962878] [2024-12-02 07:26:53,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:53,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:26:53,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:53,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:26:53,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:53,989 INFO L87 Difference]: Start difference. First operand 540 states and 880 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-12-02 07:26:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:54,076 INFO L93 Difference]: Finished difference Result 1073 states and 1759 transitions. [2024-12-02 07:26:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:26:54,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 116 [2024-12-02 07:26:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:54,081 INFO L225 Difference]: With dead ends: 1073 [2024-12-02 07:26:54,081 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 07:26:54,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:26:54,085 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 49 mSDsluCounter, 4309 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:54,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5180 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 07:26:54,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-12-02 07:26:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.6327543424317619) internal successors, (658), 419 states have internal predecessors, (658), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 867 transitions. [2024-12-02 07:26:54,110 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 867 transitions. Word has length 116 [2024-12-02 07:26:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:54,110 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 867 transitions. [2024-12-02 07:26:54,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-12-02 07:26:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 867 transitions. [2024-12-02 07:26:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 07:26:54,113 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:54,114 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:54,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:26:54,114 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:54,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1923479335, now seen corresponding path program 1 times [2024-12-02 07:26:54,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:54,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782831581] [2024-12-02 07:26:54,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:54,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:54,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:54,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782831581] [2024-12-02 07:26:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782831581] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:54,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:54,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:26:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70637341] [2024-12-02 07:26:54,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:54,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:26:54,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:54,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:26:54,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:54,310 INFO L87 Difference]: Start difference. First operand 534 states and 867 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-12-02 07:26:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:54,391 INFO L93 Difference]: Finished difference Result 1061 states and 1733 transitions. [2024-12-02 07:26:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:26:54,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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 116 [2024-12-02 07:26:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:54,396 INFO L225 Difference]: With dead ends: 1061 [2024-12-02 07:26:54,397 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 07:26:54,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:26:54,400 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 24 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5132 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:54,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5132 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 07:26:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-12-02 07:26:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.630272952853598) internal successors, (657), 419 states have internal predecessors, (657), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 866 transitions. [2024-12-02 07:26:54,440 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 866 transitions. Word has length 116 [2024-12-02 07:26:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:54,440 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 866 transitions. [2024-12-02 07:26:54,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-12-02 07:26:54,440 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 866 transitions. [2024-12-02 07:26:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:26:54,444 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:54,444 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:54,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:26:54,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:54,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash 951246106, now seen corresponding path program 1 times [2024-12-02 07:26:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340866357] [2024-12-02 07:26:54,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:54,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:54,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:54,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340866357] [2024-12-02 07:26:54,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340866357] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:54,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:54,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:26:54,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935147467] [2024-12-02 07:26:54,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:54,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:26:54,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:54,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:26:54,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:54,576 INFO L87 Difference]: Start difference. First operand 534 states and 866 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 07:26:54,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:54,631 INFO L93 Difference]: Finished difference Result 1052 states and 1718 transitions. [2024-12-02 07:26:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:26:54,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 117 [2024-12-02 07:26:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:54,636 INFO L225 Difference]: With dead ends: 1052 [2024-12-02 07:26:54,636 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 07:26:54,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:54,640 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 15 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:54,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2538 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 07:26:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-12-02 07:26:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.6277915632754343) internal successors, (656), 419 states have internal predecessors, (656), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 865 transitions. [2024-12-02 07:26:54,665 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 865 transitions. Word has length 117 [2024-12-02 07:26:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:54,665 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 865 transitions. [2024-12-02 07:26:54,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 07:26:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 865 transitions. [2024-12-02 07:26:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 07:26:54,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:54,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:54,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:26:54,669 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:54,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1792613496, now seen corresponding path program 1 times [2024-12-02 07:26:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:54,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035578219] [2024-12-02 07:26:54,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:54,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:54,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:54,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035578219] [2024-12-02 07:26:54,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035578219] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:54,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:54,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:26:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740379126] [2024-12-02 07:26:54,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:54,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:26:54,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:54,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:26:54,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:54,800 INFO L87 Difference]: Start difference. First operand 534 states and 865 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 07:26:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:54,850 INFO L93 Difference]: Finished difference Result 1052 states and 1716 transitions. [2024-12-02 07:26:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:26:54,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2024-12-02 07:26:54,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:54,855 INFO L225 Difference]: With dead ends: 1052 [2024-12-02 07:26:54,855 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 07:26:54,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:54,859 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 14 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:54,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2540 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:54,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 07:26:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-12-02 07:26:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.6253101736972704) internal successors, (655), 419 states have internal predecessors, (655), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 864 transitions. [2024-12-02 07:26:54,883 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 864 transitions. Word has length 118 [2024-12-02 07:26:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:54,883 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 864 transitions. [2024-12-02 07:26:54,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 07:26:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 864 transitions. [2024-12-02 07:26:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 07:26:54,886 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:54,886 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:54,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:26:54,886 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:54,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 353954911, now seen corresponding path program 1 times [2024-12-02 07:26:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:54,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236517673] [2024-12-02 07:26:54,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:54,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:55,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:55,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236517673] [2024-12-02 07:26:55,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236517673] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:55,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:55,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:26:55,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244386430] [2024-12-02 07:26:55,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:55,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:26:55,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:55,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:26:55,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:55,039 INFO L87 Difference]: Start difference. First operand 534 states and 864 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 07:26:55,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:55,104 INFO L93 Difference]: Finished difference Result 1052 states and 1714 transitions. [2024-12-02 07:26:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:26:55,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 119 [2024-12-02 07:26:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:55,109 INFO L225 Difference]: With dead ends: 1052 [2024-12-02 07:26:55,110 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 07:26:55,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:55,114 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 13 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:55,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2542 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 07:26:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-12-02 07:26:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.6228287841191067) internal successors, (654), 419 states have internal predecessors, (654), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 863 transitions. [2024-12-02 07:26:55,145 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 863 transitions. Word has length 119 [2024-12-02 07:26:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:55,145 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 863 transitions. [2024-12-02 07:26:55,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 07:26:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 863 transitions. [2024-12-02 07:26:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 07:26:55,149 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:55,149 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:55,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:26:55,149 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:55,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:55,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1248935133, now seen corresponding path program 1 times [2024-12-02 07:26:55,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:55,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492538243] [2024-12-02 07:26:55,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:55,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492538243] [2024-12-02 07:26:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492538243] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:55,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:55,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:26:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693224620] [2024-12-02 07:26:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:55,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:26:55,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:55,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:26:55,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:55,305 INFO L87 Difference]: Start difference. First operand 534 states and 863 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 07:26:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:55,352 INFO L93 Difference]: Finished difference Result 1052 states and 1712 transitions. [2024-12-02 07:26:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:26:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2024-12-02 07:26:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:55,357 INFO L225 Difference]: With dead ends: 1052 [2024-12-02 07:26:55,357 INFO L226 Difference]: Without dead ends: 534 [2024-12-02 07:26:55,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:55,360 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 12 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:55,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2544 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-12-02 07:26:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-12-02 07:26:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 403 states have (on average 1.620347394540943) internal successors, (653), 419 states have internal predecessors, (653), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 07:26:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 862 transitions. [2024-12-02 07:26:55,383 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 862 transitions. Word has length 120 [2024-12-02 07:26:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:55,383 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 862 transitions. [2024-12-02 07:26:55,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 07:26:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 862 transitions. [2024-12-02 07:26:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 07:26:55,386 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:55,386 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:55,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:26:55,386 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:55,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1472274340, now seen corresponding path program 1 times [2024-12-02 07:26:55,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:55,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573968265] [2024-12-02 07:26:55,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:55,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 07:26:55,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:55,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573968265] [2024-12-02 07:26:55,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573968265] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:26:55,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000626637] [2024-12-02 07:26:55,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:55,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:26:55,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:26:55,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:26:55,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:26:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:56,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:26:56,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:26:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 07:26:56,145 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:26:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000626637] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:56,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:26:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 07:26:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063715662] [2024-12-02 07:26:56,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:56,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:26:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:56,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:26:56,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:56,147 INFO L87 Difference]: Start difference. First operand 534 states and 862 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-12-02 07:26:56,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:56,205 INFO L93 Difference]: Finished difference Result 1513 states and 2474 transitions. [2024-12-02 07:26:56,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:26:56,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 121 [2024-12-02 07:26:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:56,211 INFO L225 Difference]: With dead ends: 1513 [2024-12-02 07:26:56,211 INFO L226 Difference]: Without dead ends: 997 [2024-12-02 07:26:56,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:56,214 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 786 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:56,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 2283 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2024-12-02 07:26:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 982. [2024-12-02 07:26:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 748 states have (on average 1.6336898395721926) internal successors, (1222), 779 states have internal predecessors, (1222), 187 states have call successors, (187), 47 states have call predecessors, (187), 46 states have return successors, (189), 181 states have call predecessors, (189), 184 states have call successors, (189) [2024-12-02 07:26:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1598 transitions. [2024-12-02 07:26:56,250 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1598 transitions. Word has length 121 [2024-12-02 07:26:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:56,250 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1598 transitions. [2024-12-02 07:26:56,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-12-02 07:26:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1598 transitions. [2024-12-02 07:26:56,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 07:26:56,254 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:56,254 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:56,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:26:56,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:26:56,455 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:56,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:56,455 INFO L85 PathProgramCache]: Analyzing trace with hash 758981207, now seen corresponding path program 1 times [2024-12-02 07:26:56,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:56,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187590269] [2024-12-02 07:26:56,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 07:26:56,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:56,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187590269] [2024-12-02 07:26:56,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187590269] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:26:56,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907657397] [2024-12-02 07:26:56,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:56,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:26:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:26:56,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:26:56,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:26:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:57,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:26:57,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:26:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 07:26:57,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:26:57,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907657397] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:57,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:26:57,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 07:26:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346761489] [2024-12-02 07:26:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:57,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:26:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:57,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:26:57,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:57,183 INFO L87 Difference]: Start difference. First operand 982 states and 1598 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-12-02 07:26:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:57,275 INFO L93 Difference]: Finished difference Result 2409 states and 3948 transitions. [2024-12-02 07:26:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:26:57,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 122 [2024-12-02 07:26:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:57,286 INFO L225 Difference]: With dead ends: 2409 [2024-12-02 07:26:57,286 INFO L226 Difference]: Without dead ends: 1445 [2024-12-02 07:26:57,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:57,293 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 786 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:57,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1619 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2024-12-02 07:26:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1397. [2024-12-02 07:26:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1066 states have (on average 1.646341463414634) internal successors, (1755), 1112 states have internal predecessors, (1755), 265 states have call successors, (265), 65 states have call predecessors, (265), 65 states have return successors, (272), 258 states have call predecessors, (272), 262 states have call successors, (272) [2024-12-02 07:26:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2292 transitions. [2024-12-02 07:26:57,364 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2292 transitions. Word has length 122 [2024-12-02 07:26:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:57,365 INFO L471 AbstractCegarLoop]: Abstraction has 1397 states and 2292 transitions. [2024-12-02 07:26:57,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-12-02 07:26:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2292 transitions. [2024-12-02 07:26:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 07:26:57,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:57,370 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:57,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:26:57,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:26:57,571 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:57,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:57,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1265982979, now seen corresponding path program 1 times [2024-12-02 07:26:57,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:57,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17138440] [2024-12-02 07:26:57,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:57,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:57,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:57,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17138440] [2024-12-02 07:26:57,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17138440] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:57,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:57,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:26:57,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947609299] [2024-12-02 07:26:57,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:57,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:26:57,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:57,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:26:57,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:26:57,754 INFO L87 Difference]: Start difference. First operand 1397 states and 2292 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:26:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:58,349 INFO L93 Difference]: Finished difference Result 4127 states and 6877 transitions. [2024-12-02 07:26:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:26:58,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2024-12-02 07:26:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:58,368 INFO L225 Difference]: With dead ends: 4127 [2024-12-02 07:26:58,368 INFO L226 Difference]: Without dead ends: 2748 [2024-12-02 07:26:58,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:26:58,376 INFO L435 NwaCegarLoop]: 961 mSDtfsCounter, 851 mSDsluCounter, 3460 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 4421 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:58,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 4421 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:26:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2024-12-02 07:26:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2701. [2024-12-02 07:26:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2065 states have (on average 1.6498789346246974) internal successors, (3407), 2153 states have internal predecessors, (3407), 509 states have call successors, (509), 124 states have call predecessors, (509), 126 states have return successors, (585), 501 states have call predecessors, (585), 505 states have call successors, (585) [2024-12-02 07:26:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 4501 transitions. [2024-12-02 07:26:58,537 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 4501 transitions. Word has length 124 [2024-12-02 07:26:58,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:58,537 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 4501 transitions. [2024-12-02 07:26:58,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:26:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 4501 transitions. [2024-12-02 07:26:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 07:26:58,544 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:58,544 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:58,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:26:58,544 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:58,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:58,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1409783066, now seen corresponding path program 1 times [2024-12-02 07:26:58,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:58,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598388827] [2024-12-02 07:26:58,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:58,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 07:26:58,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:58,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598388827] [2024-12-02 07:26:58,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598388827] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:26:58,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529712620] [2024-12-02 07:26:58,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:58,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:26:58,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:26:58,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:26:58,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:26:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:59,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:26:59,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:26:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 07:26:59,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:26:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529712620] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:59,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:26:59,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 07:26:59,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944928859] [2024-12-02 07:26:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:59,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:26:59,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:59,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:26:59,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:59,153 INFO L87 Difference]: Start difference. First operand 2701 states and 4501 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:26:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:59,312 INFO L93 Difference]: Finished difference Result 5414 states and 9087 transitions. [2024-12-02 07:26:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:26:59,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2024-12-02 07:26:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:59,334 INFO L225 Difference]: With dead ends: 5414 [2024-12-02 07:26:59,334 INFO L226 Difference]: Without dead ends: 2731 [2024-12-02 07:26:59,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:26:59,352 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 17 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:26:59,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1702 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:26:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2024-12-02 07:26:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2729. [2024-12-02 07:26:59,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 2089 states have (on average 1.6443274293920536) internal successors, (3435), 2177 states have internal predecessors, (3435), 513 states have call successors, (513), 124 states have call predecessors, (513), 126 states have return successors, (591), 505 states have call predecessors, (591), 509 states have call successors, (591) [2024-12-02 07:26:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4539 transitions. [2024-12-02 07:26:59,498 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4539 transitions. Word has length 125 [2024-12-02 07:26:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:26:59,498 INFO L471 AbstractCegarLoop]: Abstraction has 2729 states and 4539 transitions. [2024-12-02 07:26:59,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:26:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4539 transitions. [2024-12-02 07:26:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 07:26:59,504 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:26:59,504 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:26:59,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:26:59,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 07:26:59,705 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:26:59,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:26:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1538506736, now seen corresponding path program 1 times [2024-12-02 07:26:59,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:26:59,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043681986] [2024-12-02 07:26:59,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:26:59,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:26:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:26:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 07:26:59,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:26:59,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043681986] [2024-12-02 07:26:59,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043681986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:26:59,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:26:59,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:26:59,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200244809] [2024-12-02 07:26:59,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:26:59,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:26:59,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:26:59,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:26:59,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:26:59,807 INFO L87 Difference]: Start difference. First operand 2729 states and 4539 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:26:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:26:59,974 INFO L93 Difference]: Finished difference Result 5454 states and 9146 transitions. [2024-12-02 07:26:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:26:59,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2024-12-02 07:26:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:26:59,991 INFO L225 Difference]: With dead ends: 5454 [2024-12-02 07:26:59,991 INFO L226 Difference]: Without dead ends: 2743 [2024-12-02 07:27:00,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:27:00,007 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 12 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:00,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2510 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:27:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2024-12-02 07:27:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2733. [2024-12-02 07:27:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2092 states have (on average 1.642925430210325) internal successors, (3437), 2180 states have internal predecessors, (3437), 513 states have call successors, (513), 126 states have call predecessors, (513), 127 states have return successors, (580), 504 states have call predecessors, (580), 509 states have call successors, (580) [2024-12-02 07:27:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4530 transitions. [2024-12-02 07:27:00,128 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4530 transitions. Word has length 125 [2024-12-02 07:27:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:00,128 INFO L471 AbstractCegarLoop]: Abstraction has 2733 states and 4530 transitions. [2024-12-02 07:27:00,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 07:27:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4530 transitions. [2024-12-02 07:27:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 07:27:00,132 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:00,132 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:00,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:27:00,132 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:00,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:00,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1811772052, now seen corresponding path program 1 times [2024-12-02 07:27:00,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:00,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410118674] [2024-12-02 07:27:00,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 07:27:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410118674] [2024-12-02 07:27:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410118674] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:27:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338378227] [2024-12-02 07:27:00,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:00,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:27:00,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:27:00,305 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:27:00,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:27:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:00,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:27:00,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:27:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 07:27:00,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:27:00,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338378227] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:00,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:27:00,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-12-02 07:27:00,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577822786] [2024-12-02 07:27:00,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:00,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:27:00,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:00,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:27:00,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:27:00,796 INFO L87 Difference]: Start difference. First operand 2733 states and 4530 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:27:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:01,119 INFO L93 Difference]: Finished difference Result 7909 states and 13295 transitions. [2024-12-02 07:27:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:27:01,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-12-02 07:27:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:01,159 INFO L225 Difference]: With dead ends: 7909 [2024-12-02 07:27:01,159 INFO L226 Difference]: Without dead ends: 5195 [2024-12-02 07:27:01,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:27:01,175 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 697 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:01,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1649 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:27:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2024-12-02 07:27:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 5158. [2024-12-02 07:27:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 3934 states have (on average 1.6095577020843925) internal successors, (6332), 4108 states have internal predecessors, (6332), 974 states have call successors, (974), 246 states have call predecessors, (974), 249 states have return successors, (1205), 959 states have call predecessors, (1205), 968 states have call successors, (1205) [2024-12-02 07:27:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 8511 transitions. [2024-12-02 07:27:01,450 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 8511 transitions. Word has length 125 [2024-12-02 07:27:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:01,450 INFO L471 AbstractCegarLoop]: Abstraction has 5158 states and 8511 transitions. [2024-12-02 07:27:01,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-02 07:27:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 8511 transitions. [2024-12-02 07:27:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 07:27:01,456 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:01,456 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:01,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:27:01,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:27:01,656 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:01,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash -312482450, now seen corresponding path program 1 times [2024-12-02 07:27:01,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:01,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51924252] [2024-12-02 07:27:01,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:01,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 07:27:01,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:01,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51924252] [2024-12-02 07:27:01,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51924252] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:27:01,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099033250] [2024-12-02 07:27:01,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:01,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:27:01,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:27:01,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:27:01,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:27:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:02,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:27:02,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:27:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:27:02,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:27:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099033250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:27:02,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2024-12-02 07:27:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729542076] [2024-12-02 07:27:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:02,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:27:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:02,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:27:02,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:27:02,274 INFO L87 Difference]: Start difference. First operand 5158 states and 8511 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:27:02,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:02,659 INFO L93 Difference]: Finished difference Result 15360 states and 25666 transitions. [2024-12-02 07:27:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:27:02,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-12-02 07:27:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:02,731 INFO L225 Difference]: With dead ends: 15360 [2024-12-02 07:27:02,731 INFO L226 Difference]: Without dead ends: 10223 [2024-12-02 07:27:02,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:27:02,758 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 847 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:02,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1707 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:27:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10223 states. [2024-12-02 07:27:03,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10223 to 10120. [2024-12-02 07:27:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10120 states, 7744 states have (on average 1.6129907024793388) internal successors, (12491), 8072 states have internal predecessors, (12491), 1888 states have call successors, (1888), 474 states have call predecessors, (1888), 487 states have return successors, (2404), 1879 states have call predecessors, (2404), 1878 states have call successors, (2404) [2024-12-02 07:27:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10120 states to 10120 states and 16783 transitions. [2024-12-02 07:27:03,321 INFO L78 Accepts]: Start accepts. Automaton has 10120 states and 16783 transitions. Word has length 127 [2024-12-02 07:27:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:03,321 INFO L471 AbstractCegarLoop]: Abstraction has 10120 states and 16783 transitions. [2024-12-02 07:27:03,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 07:27:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10120 states and 16783 transitions. [2024-12-02 07:27:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 07:27:03,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:03,328 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:03,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:27:03,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 07:27:03,529 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:03,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:03,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1323599700, now seen corresponding path program 1 times [2024-12-02 07:27:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:03,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973918845] [2024-12-02 07:27:03,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:03,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 07:27:03,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973918845] [2024-12-02 07:27:03,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973918845] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:27:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527215241] [2024-12-02 07:27:03,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:03,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:27:03,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:27:03,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:27:03,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:27:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:04,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:27:04,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:27:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 07:27:04,145 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:27:04,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527215241] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:04,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:27:04,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-12-02 07:27:04,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36627104] [2024-12-02 07:27:04,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:04,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:27:04,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:04,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:27:04,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:27:04,147 INFO L87 Difference]: Start difference. First operand 10120 states and 16783 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 07:27:05,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:05,034 INFO L93 Difference]: Finished difference Result 19101 states and 31770 transitions. [2024-12-02 07:27:05,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:27:05,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2024-12-02 07:27:05,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:05,074 INFO L225 Difference]: With dead ends: 19101 [2024-12-02 07:27:05,074 INFO L226 Difference]: Without dead ends: 8999 [2024-12-02 07:27:05,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:27:05,114 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 722 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 4140 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:05,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 4140 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:27:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8999 states. [2024-12-02 07:27:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8999 to 8977. [2024-12-02 07:27:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8977 states, 6885 states have (on average 1.60159767610748) internal successors, (11027), 7160 states have internal predecessors, (11027), 1646 states have call successors, (1646), 434 states have call predecessors, (1646), 445 states have return successors, (2080), 1638 states have call predecessors, (2080), 1636 states have call successors, (2080) [2024-12-02 07:27:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8977 states to 8977 states and 14753 transitions. [2024-12-02 07:27:05,459 INFO L78 Accepts]: Start accepts. Automaton has 8977 states and 14753 transitions. Word has length 127 [2024-12-02 07:27:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:05,459 INFO L471 AbstractCegarLoop]: Abstraction has 8977 states and 14753 transitions. [2024-12-02 07:27:05,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 07:27:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 8977 states and 14753 transitions. [2024-12-02 07:27:05,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 07:27:05,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:05,464 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:05,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:27:05,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 07:27:05,664 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:05,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash -983988096, now seen corresponding path program 1 times [2024-12-02 07:27:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719159938] [2024-12-02 07:27:05,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:05,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 07:27:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:05,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719159938] [2024-12-02 07:27:05,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719159938] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:05,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:27:05,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:27:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533237116] [2024-12-02 07:27:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:05,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:27:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:05,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:27:05,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:27:05,830 INFO L87 Difference]: Start difference. First operand 8977 states and 14753 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 07:27:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:06,731 INFO L93 Difference]: Finished difference Result 26877 states and 45373 transitions. [2024-12-02 07:27:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:27:06,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2024-12-02 07:27:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:06,872 INFO L225 Difference]: With dead ends: 26877 [2024-12-02 07:27:06,872 INFO L226 Difference]: Without dead ends: 17918 [2024-12-02 07:27:06,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:27:06,913 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 845 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:06,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 4412 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:27:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17918 states. [2024-12-02 07:27:07,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17918 to 17817. [2024-12-02 07:27:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17817 states, 13676 states have (on average 1.5979818660427025) internal successors, (21854), 14217 states have internal predecessors, (21854), 3247 states have call successors, (3247), 862 states have call predecessors, (3247), 893 states have return successors, (4769), 3249 states have call predecessors, (4769), 3229 states have call successors, (4769) [2024-12-02 07:27:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17817 states to 17817 states and 29870 transitions. [2024-12-02 07:27:08,001 INFO L78 Accepts]: Start accepts. Automaton has 17817 states and 29870 transitions. Word has length 135 [2024-12-02 07:27:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:08,001 INFO L471 AbstractCegarLoop]: Abstraction has 17817 states and 29870 transitions. [2024-12-02 07:27:08,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 07:27:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 17817 states and 29870 transitions. [2024-12-02 07:27:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 07:27:08,004 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:08,004 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:08,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 07:27:08,004 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:08,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash 11438011, now seen corresponding path program 1 times [2024-12-02 07:27:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:08,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338684585] [2024-12-02 07:27:08,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:08,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:27:08,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:08,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338684585] [2024-12-02 07:27:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338684585] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:08,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:27:08,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:27:08,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101569032] [2024-12-02 07:27:08,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:08,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:27:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:08,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:27:08,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:27:08,071 INFO L87 Difference]: Start difference. First operand 17817 states and 29870 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 07:27:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:08,749 INFO L93 Difference]: Finished difference Result 35760 states and 60971 transitions. [2024-12-02 07:27:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:27:08,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2024-12-02 07:27:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:08,827 INFO L225 Difference]: With dead ends: 35760 [2024-12-02 07:27:08,827 INFO L226 Difference]: Without dead ends: 17961 [2024-12-02 07:27:08,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:27:08,899 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 12 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:08,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2504 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:27:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17961 states. [2024-12-02 07:27:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17961 to 17897. [2024-12-02 07:27:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17897 states, 13748 states have (on average 1.5954320628455048) internal successors, (21934), 14273 states have internal predecessors, (21934), 3247 states have call successors, (3247), 894 states have call predecessors, (3247), 901 states have return successors, (4721), 3241 states have call predecessors, (4721), 3229 states have call successors, (4721) [2024-12-02 07:27:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17897 states to 17897 states and 29902 transitions. [2024-12-02 07:27:09,441 INFO L78 Accepts]: Start accepts. Automaton has 17897 states and 29902 transitions. Word has length 136 [2024-12-02 07:27:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:09,442 INFO L471 AbstractCegarLoop]: Abstraction has 17897 states and 29902 transitions. [2024-12-02 07:27:09,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 07:27:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 17897 states and 29902 transitions. [2024-12-02 07:27:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:27:09,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:09,445 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:09,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 07:27:09,446 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:09,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash -433922386, now seen corresponding path program 1 times [2024-12-02 07:27:09,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:09,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640512662] [2024-12-02 07:27:09,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:27:09,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640512662] [2024-12-02 07:27:09,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640512662] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:09,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:27:09,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:27:09,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755900913] [2024-12-02 07:27:09,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:09,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:27:09,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:09,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:27:09,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:27:09,561 INFO L87 Difference]: Start difference. First operand 17897 states and 29902 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:27:11,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:11,332 INFO L93 Difference]: Finished difference Result 53777 states and 93382 transitions. [2024-12-02 07:27:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:27:11,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-12-02 07:27:11,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:11,585 INFO L225 Difference]: With dead ends: 53777 [2024-12-02 07:27:11,585 INFO L226 Difference]: Without dead ends: 35898 [2024-12-02 07:27:11,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:27:11,729 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 842 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 4278 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:11,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 4278 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:27:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35898 states. [2024-12-02 07:27:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35898 to 35733. [2024-12-02 07:27:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35733 states, 27459 states have (on average 1.5918642339487963) internal successors, (43711), 28500 states have internal predecessors, (43711), 6460 states have call successors, (6460), 1782 states have call predecessors, (6460), 1813 states have return successors, (11315), 6474 states have call predecessors, (11315), 6426 states have call successors, (11315) [2024-12-02 07:27:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35733 states to 35733 states and 61486 transitions. [2024-12-02 07:27:13,019 INFO L78 Accepts]: Start accepts. Automaton has 35733 states and 61486 transitions. Word has length 145 [2024-12-02 07:27:13,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:13,020 INFO L471 AbstractCegarLoop]: Abstraction has 35733 states and 61486 transitions. [2024-12-02 07:27:13,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:27:13,020 INFO L276 IsEmpty]: Start isEmpty. Operand 35733 states and 61486 transitions. [2024-12-02 07:27:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:27:13,022 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:13,022 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:13,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 07:27:13,023 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:13,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1083601301, now seen corresponding path program 1 times [2024-12-02 07:27:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:13,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425923708] [2024-12-02 07:27:13,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 07:27:13,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:13,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425923708] [2024-12-02 07:27:13,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425923708] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:13,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:27:13,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:27:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558613137] [2024-12-02 07:27:13,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:13,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:27:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:13,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:27:13,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:27:13,086 INFO L87 Difference]: Start difference. First operand 35733 states and 61486 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:27:14,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:14,563 INFO L93 Difference]: Finished difference Result 71736 states and 126660 transitions. [2024-12-02 07:27:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:27:14,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-12-02 07:27:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:14,723 INFO L225 Difference]: With dead ends: 71736 [2024-12-02 07:27:14,723 INFO L226 Difference]: Without dead ends: 36021 [2024-12-02 07:27:14,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:27:14,918 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 11 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:14,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2504 Invalid, 74 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:27:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36021 states. [2024-12-02 07:27:15,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36021 to 35893. [2024-12-02 07:27:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35893 states, 27603 states have (on average 1.5893562293953556) internal successors, (43871), 28644 states have internal predecessors, (43871), 6460 states have call successors, (6460), 1814 states have call predecessors, (6460), 1829 states have return successors, (11243), 6458 states have call predecessors, (11243), 6426 states have call successors, (11243) [2024-12-02 07:27:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35893 states to 35893 states and 61574 transitions. [2024-12-02 07:27:16,270 INFO L78 Accepts]: Start accepts. Automaton has 35893 states and 61574 transitions. Word has length 146 [2024-12-02 07:27:16,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:16,270 INFO L471 AbstractCegarLoop]: Abstraction has 35893 states and 61574 transitions. [2024-12-02 07:27:16,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:27:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 35893 states and 61574 transitions. [2024-12-02 07:27:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 07:27:16,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:16,275 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:16,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 07:27:16,276 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:16,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash -980844491, now seen corresponding path program 1 times [2024-12-02 07:27:16,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:16,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227877560] [2024-12-02 07:27:16,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 07:27:16,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227877560] [2024-12-02 07:27:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227877560] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:16,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:27:16,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:27:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654212823] [2024-12-02 07:27:16,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:16,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:27:16,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:16,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:27:16,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:27:16,443 INFO L87 Difference]: Start difference. First operand 35893 states and 61574 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 07:27:19,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:19,600 INFO L93 Difference]: Finished difference Result 108001 states and 196194 transitions. [2024-12-02 07:27:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:27:19,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-12-02 07:27:19,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:19,977 INFO L225 Difference]: With dead ends: 108001 [2024-12-02 07:27:19,978 INFO L226 Difference]: Without dead ends: 72126 [2024-12-02 07:27:20,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:27:20,217 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 837 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 4255 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:20,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 4255 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:27:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72126 states. [2024-12-02 07:27:22,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72126 to 71833. [2024-12-02 07:27:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71833 states, 55250 states have (on average 1.5866787330316743) internal successors, (87664), 57323 states have internal predecessors, (87664), 12897 states have call successors, (12897), 3622 states have call predecessors, (12897), 3685 states have return successors, (28145), 12935 states have call predecessors, (28145), 12831 states have call successors, (28145) [2024-12-02 07:27:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71833 states to 71833 states and 128706 transitions. [2024-12-02 07:27:22,911 INFO L78 Accepts]: Start accepts. Automaton has 71833 states and 128706 transitions. Word has length 156 [2024-12-02 07:27:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:22,911 INFO L471 AbstractCegarLoop]: Abstraction has 71833 states and 128706 transitions. [2024-12-02 07:27:22,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 07:27:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 71833 states and 128706 transitions. [2024-12-02 07:27:22,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 07:27:22,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:22,916 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:22,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 07:27:22,916 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:22,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:22,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1786086602, now seen corresponding path program 1 times [2024-12-02 07:27:22,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:22,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732644329] [2024-12-02 07:27:22,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:22,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 07:27:22,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:22,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732644329] [2024-12-02 07:27:22,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732644329] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:22,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:27:22,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:27:22,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531487124] [2024-12-02 07:27:22,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:22,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:27:22,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:22,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:27:22,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:27:22,995 INFO L87 Difference]: Start difference. First operand 71833 states and 128706 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 07:27:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:26,738 INFO L93 Difference]: Finished difference Result 144288 states and 268881 transitions. [2024-12-02 07:27:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:27:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2024-12-02 07:27:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:27,428 INFO L225 Difference]: With dead ends: 144288 [2024-12-02 07:27:27,428 INFO L226 Difference]: Without dead ends: 72473 [2024-12-02 07:27:27,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:27:27,908 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 10 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:27,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2504 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:27:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72473 states. [2024-12-02 07:27:29,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72473 to 72217. [2024-12-02 07:27:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72217 states, 55602 states have (on average 1.5835401604258839) internal successors, (88048), 57675 states have internal predecessors, (88048), 12897 states have call successors, (12897), 3686 states have call predecessors, (12897), 3717 states have return successors, (28065), 12903 states have call predecessors, (28065), 12831 states have call successors, (28065) [2024-12-02 07:27:30,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72217 states to 72217 states and 129010 transitions. [2024-12-02 07:27:30,308 INFO L78 Accepts]: Start accepts. Automaton has 72217 states and 129010 transitions. Word has length 157 [2024-12-02 07:27:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:30,308 INFO L471 AbstractCegarLoop]: Abstraction has 72217 states and 129010 transitions. [2024-12-02 07:27:30,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 07:27:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 72217 states and 129010 transitions. [2024-12-02 07:27:30,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 07:27:30,313 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:30,313 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:30,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 07:27:30,313 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:30,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:30,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1861494349, now seen corresponding path program 1 times [2024-12-02 07:27:30,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:30,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737368037] [2024-12-02 07:27:30,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:30,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 07:27:30,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737368037] [2024-12-02 07:27:30,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737368037] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:27:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093420854] [2024-12-02 07:27:30,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:30,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:27:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:27:30,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:27:30,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:27:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:31,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:27:31,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:27:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 07:27:31,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:27:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093420854] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:31,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:27:31,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-02 07:27:31,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058713036] [2024-12-02 07:27:31,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:31,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:27:31,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:31,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:27:31,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:27:31,124 INFO L87 Difference]: Start difference. First operand 72217 states and 129010 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 07:27:36,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:36,890 INFO L93 Difference]: Finished difference Result 176525 states and 328859 transitions. [2024-12-02 07:27:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:27:36,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 168 [2024-12-02 07:27:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:37,465 INFO L225 Difference]: With dead ends: 176525 [2024-12-02 07:27:37,465 INFO L226 Difference]: Without dead ends: 104278 [2024-12-02 07:27:38,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:27:38,194 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 841 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:38,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 3917 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:27:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104278 states. [2024-12-02 07:27:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104278 to 104090. [2024-12-02 07:27:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104090 states, 80333 states have (on average 1.5656330524193047) internal successors, (125772), 83102 states have internal predecessors, (125772), 18169 states have call successors, (18169), 5588 states have call predecessors, (18169), 5587 states have return successors, (41729), 18047 states have call predecessors, (41729), 18087 states have call successors, (41729) [2024-12-02 07:27:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104090 states to 104090 states and 185670 transitions. [2024-12-02 07:27:42,519 INFO L78 Accepts]: Start accepts. Automaton has 104090 states and 185670 transitions. Word has length 168 [2024-12-02 07:27:42,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:27:42,519 INFO L471 AbstractCegarLoop]: Abstraction has 104090 states and 185670 transitions. [2024-12-02 07:27:42,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 07:27:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 104090 states and 185670 transitions. [2024-12-02 07:27:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-02 07:27:42,529 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:27:42,529 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:27:42,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:27:42,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 07:27:42,730 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:27:42,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:27:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash -881736202, now seen corresponding path program 1 times [2024-12-02 07:27:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:27:42,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332042391] [2024-12-02 07:27:42,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:42,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:27:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 07:27:42,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:27:42,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332042391] [2024-12-02 07:27:42,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332042391] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:27:42,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297388767] [2024-12-02 07:27:42,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:27:42,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:27:42,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:27:42,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:27:42,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:27:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:27:43,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:27:43,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:27:43,411 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 07:27:43,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:27:43,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297388767] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:27:43,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:27:43,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-12-02 07:27:43,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78243151] [2024-12-02 07:27:43,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:27:43,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:27:43,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:27:43,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:27:43,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:27:43,413 INFO L87 Difference]: Start difference. First operand 104090 states and 185670 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-02 07:27:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:27:55,850 INFO L93 Difference]: Finished difference Result 284649 states and 561580 transitions. [2024-12-02 07:27:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:27:55,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 201 [2024-12-02 07:27:55,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:27:57,311 INFO L225 Difference]: With dead ends: 284649 [2024-12-02 07:27:57,311 INFO L226 Difference]: Without dead ends: 174737 [2024-12-02 07:27:58,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:27:58,235 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 2337 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 4609 mSolverCounterSat, 839 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 5448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 839 IncrementalHoareTripleChecker+Valid, 4609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:27:58,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2436 Valid, 2219 Invalid, 5448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [839 Valid, 4609 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 07:27:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174737 states. [2024-12-02 07:28:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174737 to 156665. [2024-12-02 07:28:04,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156665 states, 120780 states have (on average 1.558213280344428) internal successors, (188201), 124948 states have internal predecessors, (188201), 27346 states have call successors, (27346), 8107 states have call predecessors, (27346), 8538 states have return successors, (73742), 27253 states have call predecessors, (73742), 27232 states have call successors, (73742) [2024-12-02 07:28:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156665 states to 156665 states and 289289 transitions. [2024-12-02 07:28:06,509 INFO L78 Accepts]: Start accepts. Automaton has 156665 states and 289289 transitions. Word has length 201 [2024-12-02 07:28:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:28:06,509 INFO L471 AbstractCegarLoop]: Abstraction has 156665 states and 289289 transitions. [2024-12-02 07:28:06,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-02 07:28:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 156665 states and 289289 transitions. [2024-12-02 07:28:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-12-02 07:28:06,521 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:28:06,521 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:28:06,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:28:06,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:28:06,721 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:28:06,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:28:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash 140079447, now seen corresponding path program 1 times [2024-12-02 07:28:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:28:06,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874799448] [2024-12-02 07:28:06,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:28:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:28:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:28:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-12-02 07:28:06,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:28:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874799448] [2024-12-02 07:28:06,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874799448] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:28:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671938263] [2024-12-02 07:28:06,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:28:06,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:28:06,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:28:06,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:28:06,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:28:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:28:07,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 2169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:28:07,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:28:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-12-02 07:28:07,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:28:07,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671938263] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:28:07,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:28:07,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 07:28:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956081320] [2024-12-02 07:28:07,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:28:07,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:28:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:28:07,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:28:07,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:28:07,375 INFO L87 Difference]: Start difference. First operand 156665 states and 289289 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 07:28:18,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:28:18,174 INFO L93 Difference]: Finished difference Result 317920 states and 631868 transitions. [2024-12-02 07:28:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:28:18,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 240 [2024-12-02 07:28:18,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:28:19,562 INFO L225 Difference]: With dead ends: 317920 [2024-12-02 07:28:19,562 INFO L226 Difference]: Without dead ends: 161273 [2024-12-02 07:28:21,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:28:21,446 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 781 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:28:21,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 2120 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:28:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161273 states. [2024-12-02 07:28:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161273 to 161273. [2024-12-02 07:28:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161273 states, 124812 states have (on average 1.563255135724129) internal successors, (195113), 128980 states have internal predecessors, (195113), 27346 states have call successors, (27346), 8683 states have call predecessors, (27346), 9114 states have return successors, (74043), 27253 states have call predecessors, (74043), 27232 states have call successors, (74043) [2024-12-02 07:28:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161273 states to 161273 states and 296502 transitions. [2024-12-02 07:28:29,349 INFO L78 Accepts]: Start accepts. Automaton has 161273 states and 296502 transitions. Word has length 240 [2024-12-02 07:28:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:28:29,350 INFO L471 AbstractCegarLoop]: Abstraction has 161273 states and 296502 transitions. [2024-12-02 07:28:29,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 07:28:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 161273 states and 296502 transitions. [2024-12-02 07:28:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-12-02 07:28:29,571 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:28:29,571 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 07:28:29,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:28:29,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 07:28:29,771 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:28:29,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:28:29,772 INFO L85 PathProgramCache]: Analyzing trace with hash -502500862, now seen corresponding path program 1 times [2024-12-02 07:28:29,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:28:29,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464271400] [2024-12-02 07:28:29,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:28:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:28:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:28:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-12-02 07:28:29,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:28:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464271400] [2024-12-02 07:28:29,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464271400] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:28:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041160798] [2024-12-02 07:28:29,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:28:29,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:28:29,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:28:29,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:28:29,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:28:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:28:30,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 2153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:28:30,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:28:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 07:28:30,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:28:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041160798] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:28:30,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:28:30,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 07:28:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336517163] [2024-12-02 07:28:30,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:28:30,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:28:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:28:30,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:28:30,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:28:30,413 INFO L87 Difference]: Start difference. First operand 161273 states and 296502 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 07:28:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:28:40,599 INFO L93 Difference]: Finished difference Result 327136 states and 645414 transitions. [2024-12-02 07:28:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:28:40,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 239 [2024-12-02 07:28:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:28:41,849 INFO L225 Difference]: With dead ends: 327136 [2024-12-02 07:28:41,849 INFO L226 Difference]: Without dead ends: 165881 [2024-12-02 07:28:43,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:28:43,785 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 775 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:28:43,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 2117 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:28:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165881 states. [2024-12-02 07:28:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165881 to 165881. [2024-12-02 07:28:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165881 states, 128844 states have (on average 1.5679814349135388) internal successors, (202025), 133012 states have internal predecessors, (202025), 27346 states have call successors, (27346), 9259 states have call predecessors, (27346), 9690 states have return successors, (74344), 27253 states have call predecessors, (74344), 27232 states have call successors, (74344) [2024-12-02 07:28:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165881 states to 165881 states and 303715 transitions. [2024-12-02 07:28:51,604 INFO L78 Accepts]: Start accepts. Automaton has 165881 states and 303715 transitions. Word has length 239 [2024-12-02 07:28:51,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:28:51,604 INFO L471 AbstractCegarLoop]: Abstraction has 165881 states and 303715 transitions. [2024-12-02 07:28:51,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 07:28:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 165881 states and 303715 transitions. [2024-12-02 07:28:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-12-02 07:28:51,615 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:28:51,615 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:28:51,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:28:51,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 07:28:51,815 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:28:51,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:28:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2134225111, now seen corresponding path program 1 times [2024-12-02 07:28:51,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:28:51,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320099971] [2024-12-02 07:28:51,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:28:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:28:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:28:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 07:28:52,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:28:52,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320099971] [2024-12-02 07:28:52,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320099971] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:28:52,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190224131] [2024-12-02 07:28:52,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:28:52,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:28:52,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:28:52,014 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:28:52,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1123644f-ad6d-411f-bae3-cfe5d3620371/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:28:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:28:52,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:28:52,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:28:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-12-02 07:28:52,594 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:28:52,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190224131] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:28:52,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:28:52,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 07:28:52,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543190362] [2024-12-02 07:28:52,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:28:52,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:28:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:28:52,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:28:52,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:28:52,596 INFO L87 Difference]: Start difference. First operand 165881 states and 303715 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 07:29:02,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:02,409 INFO L93 Difference]: Finished difference Result 336352 states and 659040 transitions. [2024-12-02 07:29:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:29:02,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 248 [2024-12-02 07:29:02,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:03,771 INFO L225 Difference]: With dead ends: 336352 [2024-12-02 07:29:03,771 INFO L226 Difference]: Without dead ends: 170489