./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.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_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/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_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/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_91373d5f-c5f8-4830-b6c1-aa235cb676eb/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 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:06:06,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:06:06,512 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:06:06,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:06:06,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:06:06,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:06:06,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:06:06,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:06:06,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:06:06,539 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:06:06,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:06:06,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:06:06,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:06:06,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:06:06,540 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:06:06,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:06:06,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:06:06,542 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:06:06,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:06:06,542 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:06:06,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:06:06,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:06:06,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:06:06,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:06:06,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:06:06,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:06:06,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:06:06,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:06:06,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:06:06,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:06:06,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:06:06,544 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_91373d5f-c5f8-4830-b6c1-aa235cb676eb/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 -> 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 [2024-12-02 06:06:06,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:06:06,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:06:06,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:06:06,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:06:06,752 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:06:06,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2024-12-02 06:06:09,351 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/data/d4afbd18a/876a15ff943a49f6a326e21f8cad7f26/FLAGdca7cfd33 [2024-12-02 06:06:09,630 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:06:09,631 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2024-12-02 06:06:09,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/data/d4afbd18a/876a15ff943a49f6a326e21f8cad7f26/FLAGdca7cfd33 [2024-12-02 06:06:09,663 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/data/d4afbd18a/876a15ff943a49f6a326e21f8cad7f26 [2024-12-02 06:06:09,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:06:09,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:06:09,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:06:09,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:06:09,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:06:09,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:06:09" (1/1) ... [2024-12-02 06:06:09,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7932db68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:09, skipping insertion in model container [2024-12-02 06:06:09,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:06:09" (1/1) ... [2024-12-02 06:06:09,716 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:06:10,064 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_91373d5f-c5f8-4830-b6c1-aa235cb676eb/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2024-12-02 06:06:10,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:06:10,116 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:06:10,122 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-12-02 06:06:10,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [408] [2024-12-02 06:06:10,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [528] [2024-12-02 06:06:10,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [622] [2024-12-02 06:06:10,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2141] [2024-12-02 06:06:10,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2802] [2024-12-02 06:06:10,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2817] [2024-12-02 06:06:10,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3004] [2024-12-02 06:06:10,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3013] [2024-12-02 06:06:10,124 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3379] [2024-12-02 06:06:10,202 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_91373d5f-c5f8-4830-b6c1-aa235cb676eb/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2024-12-02 06:06:10,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:06:10,240 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:06:10,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10 WrapperNode [2024-12-02 06:06:10,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:06:10,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:06:10,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:06:10,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:06:10,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,293 INFO L138 Inliner]: procedures = 90, calls = 345, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 882 [2024-12-02 06:06:10,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:06:10,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:06:10,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:06:10,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:06:10,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,327 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 06:06:10,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,345 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:06:10,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:06:10,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:06:10,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:06:10,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (1/1) ... [2024-12-02 06:06:10,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:06:10,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:06:10,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:06:10,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:06:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:06:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 06:06:10,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 06:06:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 06:06:10,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 06:06:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 06:06:10,437 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 06:06:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 06:06:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 06:06:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 06:06:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 06:06:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 06:06:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 06:06:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 06:06:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 06:06:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 06:06:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 06:06:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 06:06:10,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 06:06:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 06:06:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 06:06:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 06:06:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 06:06:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 06:06:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 06:06:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 06:06:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 06:06:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 06:06:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 06:06:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 06:06:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 06:06:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 06:06:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 06:06:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 06:06:10,439 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 06:06:10,440 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 06:06:10,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 06:06:10,440 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 06:06:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 06:06:10,441 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 06:06:10,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 06:06:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 06:06:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 06:06:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 06:06:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 06:06:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 06:06:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 06:06:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:06:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:06:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 06:06:10,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 06:06:10,604 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:06:10,607 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:06:11,658 INFO L? ?]: Removed 458 outVars from TransFormulas that were not future-live. [2024-12-02 06:06:11,658 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:06:11,679 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:06:11,679 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:06:11,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:06:11 BoogieIcfgContainer [2024-12-02 06:06:11,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:06:11,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:06:11,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:06:11,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:06:11,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:06:09" (1/3) ... [2024-12-02 06:06:11,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d34572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:06:11, skipping insertion in model container [2024-12-02 06:06:11,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:10" (2/3) ... [2024-12-02 06:06:11,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d34572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:06:11, skipping insertion in model container [2024-12-02 06:06:11,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:06:11" (3/3) ... [2024-12-02 06:06:11,689 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2024-12-02 06:06:11,699 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:06:11,701 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product21.cil.c that has 27 procedures, 587 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:06:11,757 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:06:11,766 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;@11ecc185, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:06:11,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:06:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 587 states, 453 states have (on average 1.6777041942604856) internal successors, (760), 471 states have internal predecessors, (760), 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 06:06:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 06:06:11,790 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:11,791 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:11,791 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:11,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash 409020258, now seen corresponding path program 1 times [2024-12-02 06:06:11,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:11,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514771291] [2024-12-02 06:06:11,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:11,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:12,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514771291] [2024-12-02 06:06:12,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514771291] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:12,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:12,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:06:12,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753669242] [2024-12-02 06:06:12,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:12,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:06:12,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:12,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:06:12,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:06:12,494 INFO L87 Difference]: Start difference. First operand has 587 states, 453 states have (on average 1.6777041942604856) internal successors, (760), 471 states have internal predecessors, (760), 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:06:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:12,737 INFO L93 Difference]: Finished difference Result 1171 states and 1956 transitions. [2024-12-02 06:06:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:06:12,739 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2024-12-02 06:06:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:12,754 INFO L225 Difference]: With dead ends: 1171 [2024-12-02 06:06:12,754 INFO L226 Difference]: Without dead ends: 592 [2024-12-02 06:06:12,762 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 06:06:12,765 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 91 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5645 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 06:06:12,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5645 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-12-02 06:06:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 590. [2024-12-02 06:06:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 456 states have (on average 1.668859649122807) internal successors, (761), 474 states have internal predecessors, (761), 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 06:06:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 974 transitions. [2024-12-02 06:06:12,861 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 974 transitions. Word has length 99 [2024-12-02 06:06:12,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:12,861 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 974 transitions. [2024-12-02 06:06:12,862 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:06:12,862 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 974 transitions. [2024-12-02 06:06:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 06:06:12,869 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:12,869 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:12,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:06:12,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:12,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 721922812, now seen corresponding path program 1 times [2024-12-02 06:06:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:12,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919339346] [2024-12-02 06:06:12,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:12,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:13,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919339346] [2024-12-02 06:06:13,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919339346] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:13,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:13,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:06:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589708618] [2024-12-02 06:06:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:13,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:06:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:13,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:06:13,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:06:13,261 INFO L87 Difference]: Start difference. First operand 590 states and 974 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:06:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:13,410 INFO L93 Difference]: Finished difference Result 1175 states and 1951 transitions. [2024-12-02 06:06:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:06:13,411 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2024-12-02 06:06:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:13,416 INFO L225 Difference]: With dead ends: 1175 [2024-12-02 06:06:13,417 INFO L226 Difference]: Without dead ends: 601 [2024-12-02 06:06:13,421 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 06:06:13,422 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 90 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:13,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5634 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-12-02 06:06:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 590. [2024-12-02 06:06:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 456 states have (on average 1.668859649122807) internal successors, (761), 474 states have internal predecessors, (761), 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 06:06:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 974 transitions. [2024-12-02 06:06:13,467 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 974 transitions. Word has length 100 [2024-12-02 06:06:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:13,468 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 974 transitions. [2024-12-02 06:06:13,468 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:06:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 974 transitions. [2024-12-02 06:06:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 06:06:13,472 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:13,473 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:13,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:06:13,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:13,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:13,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1823462602, now seen corresponding path program 1 times [2024-12-02 06:06:13,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:13,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659709527] [2024-12-02 06:06:13,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:13,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:13,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:13,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659709527] [2024-12-02 06:06:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659709527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:13,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:13,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882422285] [2024-12-02 06:06:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:13,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:13,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:13,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:13,651 INFO L87 Difference]: Start difference. First operand 590 states and 974 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:13,707 INFO L93 Difference]: Finished difference Result 1162 states and 1929 transitions. [2024-12-02 06:06:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:06:13,707 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-12-02 06:06:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:13,710 INFO L225 Difference]: With dead ends: 1162 [2024-12-02 06:06:13,710 INFO L226 Difference]: Without dead ends: 560 [2024-12-02 06:06:13,712 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 06:06:13,713 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 14 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2827 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 06:06:13,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2827 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-12-02 06:06:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-12-02 06:06:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 429 states have (on average 1.6526806526806528) internal successors, (709), 445 states have internal predecessors, (709), 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 06:06:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 918 transitions. [2024-12-02 06:06:13,733 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 918 transitions. Word has length 100 [2024-12-02 06:06:13,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:13,733 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 918 transitions. [2024-12-02 06:06:13,734 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 918 transitions. [2024-12-02 06:06:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 06:06:13,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:13,736 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:13,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:06:13,736 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:13,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1792939718, now seen corresponding path program 1 times [2024-12-02 06:06:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:13,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373766977] [2024-12-02 06:06:13,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:13,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373766977] [2024-12-02 06:06:13,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373766977] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:13,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:13,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:06:13,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634069516] [2024-12-02 06:06:13,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:13,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:06:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:13,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:06:13,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:06:13,926 INFO L87 Difference]: Start difference. First operand 560 states and 918 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:06:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:13,994 INFO L93 Difference]: Finished difference Result 1113 states and 1835 transitions. [2024-12-02 06:06:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:06:13,995 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2024-12-02 06:06:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:13,999 INFO L225 Difference]: With dead ends: 1113 [2024-12-02 06:06:13,999 INFO L226 Difference]: Without dead ends: 554 [2024-12-02 06:06:14,001 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 06:06:14,002 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 63 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5390 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 06:06:14,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5390 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-12-02 06:06:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2024-12-02 06:06:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 423 states have (on average 1.6453900709219857) internal successors, (696), 439 states have internal predecessors, (696), 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 06:06:14,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 905 transitions. [2024-12-02 06:06:14,022 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 905 transitions. Word has length 101 [2024-12-02 06:06:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:14,022 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 905 transitions. [2024-12-02 06:06:14,023 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:06:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 905 transitions. [2024-12-02 06:06:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 06:06:14,026 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:14,026 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:14,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:06:14,026 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:14,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:14,027 INFO L85 PathProgramCache]: Analyzing trace with hash -584889439, now seen corresponding path program 1 times [2024-12-02 06:06:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:14,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57338713] [2024-12-02 06:06:14,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:14,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57338713] [2024-12-02 06:06:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57338713] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:14,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:14,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:06:14,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114867641] [2024-12-02 06:06:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:14,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:06:14,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:14,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:06:14,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:06:14,229 INFO L87 Difference]: Start difference. First operand 554 states and 905 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:06:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:14,331 INFO L93 Difference]: Finished difference Result 1101 states and 1809 transitions. [2024-12-02 06:06:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:06:14,331 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-12-02 06:06:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:14,335 INFO L225 Difference]: With dead ends: 1101 [2024-12-02 06:06:14,336 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 06:06:14,339 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 06:06:14,339 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 49 mSDsluCounter, 4434 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5330 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:14,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5330 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:14,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 06:06:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 06:06:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 417 states have (on average 1.6354916067146283) internal successors, (682), 433 states have internal predecessors, (682), 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 06:06:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 891 transitions. [2024-12-02 06:06:14,365 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 891 transitions. Word has length 102 [2024-12-02 06:06:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:14,365 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 891 transitions. [2024-12-02 06:06:14,365 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:06:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 891 transitions. [2024-12-02 06:06:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:06:14,368 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:14,368 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:14,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:06:14,368 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:14,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2096875050, now seen corresponding path program 1 times [2024-12-02 06:06:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794336117] [2024-12-02 06:06:14,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:14,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:14,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794336117] [2024-12-02 06:06:14,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794336117] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:14,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:14,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:14,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393830297] [2024-12-02 06:06:14,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:14,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:14,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:14,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:14,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:14,498 INFO L87 Difference]: Start difference. First operand 548 states and 891 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:14,554 INFO L93 Difference]: Finished difference Result 1080 states and 1768 transitions. [2024-12-02 06:06:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:06:14,555 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2024-12-02 06:06:14,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:14,559 INFO L225 Difference]: With dead ends: 1080 [2024-12-02 06:06:14,559 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 06:06:14,562 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 06:06:14,563 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 15 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2613 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 06:06:14,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2613 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 06:06:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 06:06:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 417 states have (on average 1.6330935251798562) internal successors, (681), 433 states have internal predecessors, (681), 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 06:06:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 890 transitions. [2024-12-02 06:06:14,586 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 890 transitions. Word has length 103 [2024-12-02 06:06:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:14,587 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 890 transitions. [2024-12-02 06:06:14,587 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 890 transitions. [2024-12-02 06:06:14,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 06:06:14,590 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:14,590 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:14,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:06:14,590 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:14,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:14,590 INFO L85 PathProgramCache]: Analyzing trace with hash 495952512, now seen corresponding path program 1 times [2024-12-02 06:06:14,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:14,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900789281] [2024-12-02 06:06:14,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:14,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:14,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:14,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900789281] [2024-12-02 06:06:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900789281] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:14,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:14,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912200633] [2024-12-02 06:06:14,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:14,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:14,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:14,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:14,735 INFO L87 Difference]: Start difference. First operand 548 states and 890 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:14,786 INFO L93 Difference]: Finished difference Result 1080 states and 1766 transitions. [2024-12-02 06:06:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:06:14,786 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-12-02 06:06:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:14,791 INFO L225 Difference]: With dead ends: 1080 [2024-12-02 06:06:14,791 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 06:06:14,794 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 06:06:14,795 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 14 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2615 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 06:06:14,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2615 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 06:06:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 06:06:14,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 417 states have (on average 1.630695443645084) internal successors, (680), 433 states have internal predecessors, (680), 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 06:06:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 889 transitions. [2024-12-02 06:06:14,819 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 889 transitions. Word has length 104 [2024-12-02 06:06:14,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:14,819 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 889 transitions. [2024-12-02 06:06:14,819 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 889 transitions. [2024-12-02 06:06:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 06:06:14,822 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:14,823 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:14,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:06:14,823 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:14,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -11415249, now seen corresponding path program 1 times [2024-12-02 06:06:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:14,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680898385] [2024-12-02 06:06:14,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:14,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:14,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:14,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680898385] [2024-12-02 06:06:14,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680898385] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:14,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:14,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428285713] [2024-12-02 06:06:14,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:14,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:14,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:14,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:14,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:14,948 INFO L87 Difference]: Start difference. First operand 548 states and 889 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:14,995 INFO L93 Difference]: Finished difference Result 1080 states and 1764 transitions. [2024-12-02 06:06:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:06:14,996 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-12-02 06:06:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:15,000 INFO L225 Difference]: With dead ends: 1080 [2024-12-02 06:06:15,000 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 06:06:15,003 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 06:06:15,003 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 13 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2617 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 06:06:15,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2617 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 06:06:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 06:06:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 417 states have (on average 1.6282973621103118) internal successors, (679), 433 states have internal predecessors, (679), 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 06:06:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 888 transitions. [2024-12-02 06:06:15,025 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 888 transitions. Word has length 105 [2024-12-02 06:06:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:15,026 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 888 transitions. [2024-12-02 06:06:15,026 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 888 transitions. [2024-12-02 06:06:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 06:06:15,029 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:15,029 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:15,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:06:15,029 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:15,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash -978323291, now seen corresponding path program 1 times [2024-12-02 06:06:15,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:15,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034239986] [2024-12-02 06:06:15,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:15,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:15,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034239986] [2024-12-02 06:06:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034239986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:15,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:15,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064613904] [2024-12-02 06:06:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:15,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:15,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:15,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:15,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:15,173 INFO L87 Difference]: Start difference. First operand 548 states and 888 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:15,227 INFO L93 Difference]: Finished difference Result 1080 states and 1762 transitions. [2024-12-02 06:06:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:06:15,227 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-12-02 06:06:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:15,232 INFO L225 Difference]: With dead ends: 1080 [2024-12-02 06:06:15,232 INFO L226 Difference]: Without dead ends: 548 [2024-12-02 06:06:15,236 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 06:06:15,237 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 12 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2619 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 06:06:15,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2619 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:15,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-12-02 06:06:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-12-02 06:06:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 417 states have (on average 1.6258992805755397) internal successors, (678), 433 states have internal predecessors, (678), 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 06:06:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 887 transitions. [2024-12-02 06:06:15,267 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 887 transitions. Word has length 106 [2024-12-02 06:06:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:15,267 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 887 transitions. [2024-12-02 06:06:15,267 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:06:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 887 transitions. [2024-12-02 06:06:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 06:06:15,271 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:15,271 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:15,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:06:15,271 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:15,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash 988889140, now seen corresponding path program 1 times [2024-12-02 06:06:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118522112] [2024-12-02 06:06:15,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:15,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:15,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118522112] [2024-12-02 06:06:15,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118522112] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:15,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:15,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:15,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829276848] [2024-12-02 06:06:15,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:15,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:15,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:15,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:15,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:15,565 INFO L87 Difference]: Start difference. First operand 548 states and 887 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 06:06:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:16,245 INFO L93 Difference]: Finished difference Result 1553 states and 2543 transitions. [2024-12-02 06:06:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:06:16,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2024-12-02 06:06:16,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:16,252 INFO L225 Difference]: With dead ends: 1553 [2024-12-02 06:06:16,252 INFO L226 Difference]: Without dead ends: 1023 [2024-12-02 06:06:16,256 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 06:06:16,257 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 751 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:16,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 4300 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 06:06:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-12-02 06:06:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1015. [2024-12-02 06:06:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 775 states have (on average 1.590967741935484) internal successors, (1233), 805 states have internal predecessors, (1233), 194 states have call successors, (194), 49 states have call predecessors, (194), 45 states have return successors, (195), 185 states have call predecessors, (195), 190 states have call successors, (195) [2024-12-02 06:06:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1622 transitions. [2024-12-02 06:06:16,307 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1622 transitions. Word has length 107 [2024-12-02 06:06:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:16,307 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1622 transitions. [2024-12-02 06:06:16,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 06:06:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1622 transitions. [2024-12-02 06:06:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 06:06:16,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:16,310 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:16,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:06:16,310 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:16,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2141811675, now seen corresponding path program 1 times [2024-12-02 06:06:16,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:16,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378689820] [2024-12-02 06:06:16,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:06:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378689820] [2024-12-02 06:06:16,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378689820] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:06:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978394606] [2024-12-02 06:06:16,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:16,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:16,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:06:16,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:06:16,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:06:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:16,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:06:16,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:06:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:17,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:06:17,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978394606] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:17,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:06:17,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 06:06:17,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940187959] [2024-12-02 06:06:17,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:17,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:17,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:17,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:06:17,021 INFO L87 Difference]: Start difference. First operand 1015 states and 1622 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 06:06:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:17,128 INFO L93 Difference]: Finished difference Result 2923 states and 4738 transitions. [2024-12-02 06:06:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:17,129 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), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2024-12-02 06:06:17,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:17,141 INFO L225 Difference]: With dead ends: 2923 [2024-12-02 06:06:17,142 INFO L226 Difference]: Without dead ends: 1926 [2024-12-02 06:06:17,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 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 06:06:17,148 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 812 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1730 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 06:06:17,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1730 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2024-12-02 06:06:17,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1865. [2024-12-02 06:06:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1432 states have (on average 1.60963687150838) internal successors, (2305), 1492 states have internal predecessors, (2305), 347 states have call successors, (347), 88 states have call predecessors, (347), 85 states have return successors, (362), 334 states have call predecessors, (362), 343 states have call successors, (362) [2024-12-02 06:06:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3014 transitions. [2024-12-02 06:06:17,245 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3014 transitions. Word has length 113 [2024-12-02 06:06:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:17,245 INFO L471 AbstractCegarLoop]: Abstraction has 1865 states and 3014 transitions. [2024-12-02 06:06:17,245 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), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 06:06:17,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3014 transitions. [2024-12-02 06:06:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 06:06:17,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:17,249 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:17,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:06:17,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:17,450 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:17,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash 26314497, now seen corresponding path program 1 times [2024-12-02 06:06:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087506469] [2024-12-02 06:06:17,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:06:17,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:17,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087506469] [2024-12-02 06:06:17,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087506469] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:06:17,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254862939] [2024-12-02 06:06:17,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:17,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:17,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:06:17,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:06:17,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:06:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:17,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:06:17,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:06:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:18,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:06:18,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254862939] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:18,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:06:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 06:06:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410117086] [2024-12-02 06:06:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:18,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:18,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:18,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:06:18,083 INFO L87 Difference]: Start difference. First operand 1865 states and 3014 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 06:06:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:18,205 INFO L93 Difference]: Finished difference Result 4185 states and 6801 transitions. [2024-12-02 06:06:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:18,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2024-12-02 06:06:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:18,222 INFO L225 Difference]: With dead ends: 4185 [2024-12-02 06:06:18,222 INFO L226 Difference]: Without dead ends: 2338 [2024-12-02 06:06:18,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 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 06:06:18,232 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 809 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1667 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 06:06:18,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1667 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2024-12-02 06:06:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2291. [2024-12-02 06:06:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1762 states have (on average 1.6220204313280364) internal successors, (2858), 1837 states have internal predecessors, (2858), 424 states have call successors, (424), 106 states have call predecessors, (424), 104 states have return successors, (443), 410 states have call predecessors, (443), 420 states have call successors, (443) [2024-12-02 06:06:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3725 transitions. [2024-12-02 06:06:18,350 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3725 transitions. Word has length 114 [2024-12-02 06:06:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:18,350 INFO L471 AbstractCegarLoop]: Abstraction has 2291 states and 3725 transitions. [2024-12-02 06:06:18,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 06:06:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3725 transitions. [2024-12-02 06:06:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 06:06:18,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:18,354 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:18,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:06:18,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 06:06:18,555 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:18,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash -975815322, now seen corresponding path program 1 times [2024-12-02 06:06:18,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:18,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005466651] [2024-12-02 06:06:18,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:18,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:18,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:18,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005466651] [2024-12-02 06:06:18,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005466651] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:18,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:18,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691204758] [2024-12-02 06:06:18,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:18,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:18,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:18,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:18,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:18,751 INFO L87 Difference]: Start difference. First operand 2291 states and 3725 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:06:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:19,333 INFO L93 Difference]: Finished difference Result 6769 states and 11205 transitions. [2024-12-02 06:06:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:06:19,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-12-02 06:06:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:19,367 INFO L225 Difference]: With dead ends: 6769 [2024-12-02 06:06:19,367 INFO L226 Difference]: Without dead ends: 4496 [2024-12-02 06:06:19,381 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 06:06:19,382 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 876 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 4580 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:19,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 4580 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:06:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2024-12-02 06:06:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4443. [2024-12-02 06:06:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4443 states, 3419 states have (on average 1.6180169640245685) internal successors, (5532), 3564 states have internal predecessors, (5532), 818 states have call successors, (818), 206 states have call predecessors, (818), 205 states have return successors, (973), 798 states have call predecessors, (973), 812 states have call successors, (973) [2024-12-02 06:06:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 7323 transitions. [2024-12-02 06:06:19,677 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 7323 transitions. Word has length 116 [2024-12-02 06:06:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:19,677 INFO L471 AbstractCegarLoop]: Abstraction has 4443 states and 7323 transitions. [2024-12-02 06:06:19,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-02 06:06:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 7323 transitions. [2024-12-02 06:06:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 06:06:19,683 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:19,683 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:19,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:06:19,683 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:19,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1857097897, now seen corresponding path program 1 times [2024-12-02 06:06:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15965838] [2024-12-02 06:06:19,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:19,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:19,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15965838] [2024-12-02 06:06:19,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15965838] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:19,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:19,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:19,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041369158] [2024-12-02 06:06:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:19,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:19,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:19,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:19,803 INFO L87 Difference]: Start difference. First operand 4443 states and 7323 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, (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 06:06:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:20,017 INFO L93 Difference]: Finished difference Result 8892 states and 14789 transitions. [2024-12-02 06:06:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:06:20,018 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, (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 06:06:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:20,048 INFO L225 Difference]: With dead ends: 8892 [2024-12-02 06:06:20,048 INFO L226 Difference]: Without dead ends: 4467 [2024-12-02 06:06:20,073 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 06:06:20,074 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 12 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:20,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2583 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2024-12-02 06:06:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4451. [2024-12-02 06:06:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 3425 states have (on average 1.6163503649635036) internal successors, (5536), 3570 states have internal predecessors, (5536), 818 states have call successors, (818), 210 states have call predecessors, (818), 207 states have return successors, (963), 796 states have call predecessors, (963), 812 states have call successors, (963) [2024-12-02 06:06:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 7317 transitions. [2024-12-02 06:06:20,290 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 7317 transitions. Word has length 118 [2024-12-02 06:06:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:20,291 INFO L471 AbstractCegarLoop]: Abstraction has 4451 states and 7317 transitions. [2024-12-02 06:06:20,291 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, (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 06:06:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 7317 transitions. [2024-12-02 06:06:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 06:06:20,295 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:20,296 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:20,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:06:20,296 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:20,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1130444171, now seen corresponding path program 1 times [2024-12-02 06:06:20,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:20,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747734053] [2024-12-02 06:06:20,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:20,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 06:06:20,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:20,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747734053] [2024-12-02 06:06:20,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747734053] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:20,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:20,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004709421] [2024-12-02 06:06:20,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:20,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:20,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:20,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:20,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:20,470 INFO L87 Difference]: Start difference. First operand 4451 states and 7317 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 06:06:21,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:21,148 INFO L93 Difference]: Finished difference Result 13298 states and 22411 transitions. [2024-12-02 06:06:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:06:21,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 125 [2024-12-02 06:06:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:21,205 INFO L225 Difference]: With dead ends: 13298 [2024-12-02 06:06:21,205 INFO L226 Difference]: Without dead ends: 8865 [2024-12-02 06:06:21,229 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 06:06:21,229 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 872 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 4423 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:21,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 4423 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:06:21,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8865 states. [2024-12-02 06:06:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8865 to 8796. [2024-12-02 06:06:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8796 states, 6771 states have (on average 1.6129079899571703) internal successors, (10921), 7056 states have internal predecessors, (10921), 1611 states have call successors, (1611), 414 states have call predecessors, (1611), 413 states have return successors, (2220), 1577 states have call predecessors, (2220), 1601 states have call successors, (2220) [2024-12-02 06:06:21,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8796 states to 8796 states and 14752 transitions. [2024-12-02 06:06:21,659 INFO L78 Accepts]: Start accepts. Automaton has 8796 states and 14752 transitions. Word has length 125 [2024-12-02 06:06:21,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:21,659 INFO L471 AbstractCegarLoop]: Abstraction has 8796 states and 14752 transitions. [2024-12-02 06:06:21,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 06:06:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 8796 states and 14752 transitions. [2024-12-02 06:06:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-12-02 06:06:21,665 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:21,665 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:21,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:06:21,666 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:21,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1365962595, now seen corresponding path program 1 times [2024-12-02 06:06:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034081472] [2024-12-02 06:06:21,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 06:06:21,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:21,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034081472] [2024-12-02 06:06:21,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034081472] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:21,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:21,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534375952] [2024-12-02 06:06:21,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:21,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:21,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:21,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:21,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:21,774 INFO L87 Difference]: Start difference. First operand 8796 states and 14752 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (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 06:06:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:22,257 INFO L93 Difference]: Finished difference Result 17646 states and 29981 transitions. [2024-12-02 06:06:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:06:22,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (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 128 [2024-12-02 06:06:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:22,324 INFO L225 Difference]: With dead ends: 17646 [2024-12-02 06:06:22,324 INFO L226 Difference]: Without dead ends: 8868 [2024-12-02 06:06:22,391 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 06:06:22,392 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 12 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:22,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2574 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8868 states. [2024-12-02 06:06:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8868 to 8836. [2024-12-02 06:06:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8836 states, 6807 states have (on average 1.6102541501395622) internal successors, (10961), 7084 states have internal predecessors, (10961), 1611 states have call successors, (1611), 430 states have call predecessors, (1611), 417 states have return successors, (2206), 1573 states have call predecessors, (2206), 1601 states have call successors, (2206) [2024-12-02 06:06:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8836 states to 8836 states and 14778 transitions. [2024-12-02 06:06:22,777 INFO L78 Accepts]: Start accepts. Automaton has 8836 states and 14778 transitions. Word has length 128 [2024-12-02 06:06:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:22,778 INFO L471 AbstractCegarLoop]: Abstraction has 8836 states and 14778 transitions. [2024-12-02 06:06:22,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (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 06:06:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8836 states and 14778 transitions. [2024-12-02 06:06:22,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 06:06:22,784 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:22,784 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:22,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:06:22,784 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:22,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -881360042, now seen corresponding path program 1 times [2024-12-02 06:06:22,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:22,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639210438] [2024-12-02 06:06:22,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:22,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 06:06:22,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:22,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639210438] [2024-12-02 06:06:22,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639210438] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:22,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:22,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403374278] [2024-12-02 06:06:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:22,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:22,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:22,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:22,990 INFO L87 Difference]: Start difference. First operand 8836 states and 14778 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 06:06:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:23,776 INFO L93 Difference]: Finished difference Result 26526 states and 45950 transitions. [2024-12-02 06:06:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:06:23,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 136 [2024-12-02 06:06:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:23,889 INFO L225 Difference]: With dead ends: 26526 [2024-12-02 06:06:23,889 INFO L226 Difference]: Without dead ends: 17708 [2024-12-02 06:06:23,945 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 06:06:23,945 INFO L435 NwaCegarLoop]: 995 mSDtfsCounter, 867 mSDsluCounter, 3595 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 4590 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:23,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 4590 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:06:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17708 states. [2024-12-02 06:06:24,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17708 to 17607. [2024-12-02 06:06:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17607 states, 13567 states have (on average 1.6069875433036043) internal successors, (21802), 14116 states have internal predecessors, (21802), 3202 states have call successors, (3202), 854 states have call predecessors, (3202), 837 states have return successors, (5312), 3140 states have call predecessors, (5312), 3184 states have call successors, (5312) [2024-12-02 06:06:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17607 states to 17607 states and 30316 transitions. [2024-12-02 06:06:24,667 INFO L78 Accepts]: Start accepts. Automaton has 17607 states and 30316 transitions. Word has length 136 [2024-12-02 06:06:24,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:24,668 INFO L471 AbstractCegarLoop]: Abstraction has 17607 states and 30316 transitions. [2024-12-02 06:06:24,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 06:06:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 17607 states and 30316 transitions. [2024-12-02 06:06:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 06:06:24,673 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:24,673 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:24,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:06:24,673 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:24,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash 400790237, now seen corresponding path program 1 times [2024-12-02 06:06:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133383531] [2024-12-02 06:06:24,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 06:06:24,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:24,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133383531] [2024-12-02 06:06:24,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133383531] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:24,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:24,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:24,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28550640] [2024-12-02 06:06:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:24,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:24,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:24,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:24,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:24,839 INFO L87 Difference]: Start difference. First operand 17607 states and 30316 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 06:06:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:25,769 INFO L93 Difference]: Finished difference Result 35340 states and 62106 transitions. [2024-12-02 06:06:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:06:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 139 [2024-12-02 06:06:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:25,883 INFO L225 Difference]: With dead ends: 35340 [2024-12-02 06:06:25,883 INFO L226 Difference]: Without dead ends: 17751 [2024-12-02 06:06:26,017 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 06:06:26,017 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 11 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:26,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2577 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:26,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17751 states. [2024-12-02 06:06:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17751 to 17687. [2024-12-02 06:06:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17687 states, 13639 states have (on average 1.6043698218344453) internal successors, (21882), 14188 states have internal predecessors, (21882), 3202 states have call successors, (3202), 870 states have call predecessors, (3202), 845 states have return successors, (5296), 3132 states have call predecessors, (5296), 3184 states have call successors, (5296) [2024-12-02 06:06:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17687 states to 17687 states and 30380 transitions. [2024-12-02 06:06:26,691 INFO L78 Accepts]: Start accepts. Automaton has 17687 states and 30380 transitions. Word has length 139 [2024-12-02 06:06:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:26,691 INFO L471 AbstractCegarLoop]: Abstraction has 17687 states and 30380 transitions. [2024-12-02 06:06:26,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 06:06:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 17687 states and 30380 transitions. [2024-12-02 06:06:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 06:06:26,696 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:26,696 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:26,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:06:26,697 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:26,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:26,697 INFO L85 PathProgramCache]: Analyzing trace with hash -436177993, now seen corresponding path program 1 times [2024-12-02 06:06:26,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:26,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044433200] [2024-12-02 06:06:26,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:26,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 06:06:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:26,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044433200] [2024-12-02 06:06:26,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044433200] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:26,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:26,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283090889] [2024-12-02 06:06:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:26,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:26,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:26,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:26,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:26,871 INFO L87 Difference]: Start difference. First operand 17687 states and 30380 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 06:06:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:28,209 INFO L93 Difference]: Finished difference Result 53200 states and 96109 transitions. [2024-12-02 06:06:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:06:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 149 [2024-12-02 06:06:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:28,366 INFO L225 Difference]: With dead ends: 53200 [2024-12-02 06:06:28,366 INFO L226 Difference]: Without dead ends: 35531 [2024-12-02 06:06:28,468 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 06:06:28,468 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 863 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:28,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 4420 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:06:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35531 states. [2024-12-02 06:06:29,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35531 to 35366. [2024-12-02 06:06:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35366 states, 27275 states have (on average 1.6011365719523374) internal successors, (43671), 28368 states have internal predecessors, (43671), 6389 states have call successors, (6389), 1734 states have call predecessors, (6389), 1701 states have return successors, (13330), 6271 states have call predecessors, (13330), 6355 states have call successors, (13330) [2024-12-02 06:06:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35366 states to 35366 states and 63390 transitions. [2024-12-02 06:06:30,126 INFO L78 Accepts]: Start accepts. Automaton has 35366 states and 63390 transitions. Word has length 149 [2024-12-02 06:06:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:30,126 INFO L471 AbstractCegarLoop]: Abstraction has 35366 states and 63390 transitions. [2024-12-02 06:06:30,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 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 06:06:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 35366 states and 63390 transitions. [2024-12-02 06:06:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 06:06:30,131 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:30,131 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:30,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:06:30,131 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:30,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1329465617, now seen corresponding path program 1 times [2024-12-02 06:06:30,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796558572] [2024-12-02 06:06:30,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:30,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:30,233 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 06:06:30,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:30,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796558572] [2024-12-02 06:06:30,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796558572] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:30,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:30,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:06:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920259412] [2024-12-02 06:06:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:30,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:06:30,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:30,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:06:30,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:06:30,234 INFO L87 Difference]: Start difference. First operand 35366 states and 63390 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 06:06:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:31,562 INFO L93 Difference]: Finished difference Result 70750 states and 130923 transitions. [2024-12-02 06:06:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:06:31,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 150 [2024-12-02 06:06:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:31,723 INFO L225 Difference]: With dead ends: 70750 [2024-12-02 06:06:31,723 INFO L226 Difference]: Without dead ends: 35354 [2024-12-02 06:06:32,113 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 06:06:32,114 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 9 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:32,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2574 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35354 states. [2024-12-02 06:06:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35354 to 35228. [2024-12-02 06:06:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35228 states, 27182 states have (on average 1.5969759399602679) internal successors, (43409), 28278 states have internal predecessors, (43409), 6338 states have call successors, (6338), 1740 states have call predecessors, (6338), 1707 states have return successors, (13162), 6205 states have call predecessors, (13162), 6304 states have call successors, (13162) [2024-12-02 06:06:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35228 states to 35228 states and 62909 transitions. [2024-12-02 06:06:33,169 INFO L78 Accepts]: Start accepts. Automaton has 35228 states and 62909 transitions. Word has length 150 [2024-12-02 06:06:33,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:33,169 INFO L471 AbstractCegarLoop]: Abstraction has 35228 states and 62909 transitions. [2024-12-02 06:06:33,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 06:06:33,169 INFO L276 IsEmpty]: Start isEmpty. Operand 35228 states and 62909 transitions. [2024-12-02 06:06:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 06:06:33,176 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:33,176 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:06:33,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:06:33,176 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:33,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:33,177 INFO L85 PathProgramCache]: Analyzing trace with hash 281940694, now seen corresponding path program 1 times [2024-12-02 06:06:33,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:33,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608132617] [2024-12-02 06:06:33,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:33,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 06:06:33,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:33,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608132617] [2024-12-02 06:06:33,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608132617] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:06:33,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112657715] [2024-12-02 06:06:33,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:33,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:33,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:06:33,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:06:33,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:06:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:33,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:06:33,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:06:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:06:33,759 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:06:33,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112657715] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:33,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:06:33,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 06:06:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099220504] [2024-12-02 06:06:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:33,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:33,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:33,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:33,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:06:33,761 INFO L87 Difference]: Start difference. First operand 35228 states and 62909 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:06:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:36,083 INFO L93 Difference]: Finished difference Result 78892 states and 146059 transitions. [2024-12-02 06:06:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:36,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2024-12-02 06:06:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:36,426 INFO L225 Difference]: With dead ends: 78892 [2024-12-02 06:06:36,426 INFO L226 Difference]: Without dead ends: 56988 [2024-12-02 06:06:36,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:06:36,540 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 874 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1769 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 06:06:36,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1769 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56988 states. [2024-12-02 06:06:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56988 to 56744. [2024-12-02 06:06:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56744 states, 43900 states have (on average 1.6111161731207289) internal successors, (70728), 45606 states have internal predecessors, (70728), 10080 states have call successors, (10080), 2748 states have call predecessors, (10080), 2763 states have return successors, (22913), 10009 states have call predecessors, (22913), 10030 states have call successors, (22913) [2024-12-02 06:06:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56744 states to 56744 states and 103721 transitions. [2024-12-02 06:06:38,790 INFO L78 Accepts]: Start accepts. Automaton has 56744 states and 103721 transitions. Word has length 185 [2024-12-02 06:06:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:38,791 INFO L471 AbstractCegarLoop]: Abstraction has 56744 states and 103721 transitions. [2024-12-02 06:06:38,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:06:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 56744 states and 103721 transitions. [2024-12-02 06:06:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 06:06:38,800 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:38,800 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:38,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:06:39,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:39,001 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:39,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:39,001 INFO L85 PathProgramCache]: Analyzing trace with hash -775897384, now seen corresponding path program 1 times [2024-12-02 06:06:39,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:39,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090071754] [2024-12-02 06:06:39,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:39,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 06:06:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090071754] [2024-12-02 06:06:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090071754] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:06:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216645981] [2024-12-02 06:06:39,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:39,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:39,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:06:39,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:06:39,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:06:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:39,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 2051 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 06:06:39,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:06:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:39,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:06:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216645981] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:39,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:06:39,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 06:06:39,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120279184] [2024-12-02 06:06:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:39,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:06:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:39,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:06:39,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:06:39,860 INFO L87 Difference]: Start difference. First operand 56744 states and 103721 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 06:06:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:47,205 INFO L93 Difference]: Finished difference Result 149718 states and 294595 transitions. [2024-12-02 06:06:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 06:06:47,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 185 [2024-12-02 06:06:47,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:47,730 INFO L225 Difference]: With dead ends: 149718 [2024-12-02 06:06:47,730 INFO L226 Difference]: Without dead ends: 89104 [2024-12-02 06:06:48,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-12-02 06:06:48,104 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 2347 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 4826 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 5599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 4826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:48,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2448 Valid, 2284 Invalid, 5599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [773 Valid, 4826 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 06:06:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89104 states. [2024-12-02 06:06:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89104 to 80244. [2024-12-02 06:06:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80244 states, 62074 states have (on average 1.6083867641846827) internal successors, (99839), 64454 states have internal predecessors, (99839), 14206 states have call successors, (14206), 3724 states have call predecessors, (14206), 3963 states have return successors, (36578), 14181 states have call predecessors, (36578), 14140 states have call successors, (36578) [2024-12-02 06:06:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80244 states to 80244 states and 150623 transitions. [2024-12-02 06:06:52,303 INFO L78 Accepts]: Start accepts. Automaton has 80244 states and 150623 transitions. Word has length 185 [2024-12-02 06:06:52,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:52,304 INFO L471 AbstractCegarLoop]: Abstraction has 80244 states and 150623 transitions. [2024-12-02 06:06:52,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 06:06:52,304 INFO L276 IsEmpty]: Start isEmpty. Operand 80244 states and 150623 transitions. [2024-12-02 06:06:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-12-02 06:06:52,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:52,316 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:06:52,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:06:52,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:52,517 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:52,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash -819165195, now seen corresponding path program 1 times [2024-12-02 06:06:52,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:52,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289937349] [2024-12-02 06:06:52,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-02 06:06:53,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:53,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289937349] [2024-12-02 06:06:53,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289937349] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:06:53,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568753180] [2024-12-02 06:06:53,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:53,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:53,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:06:53,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:06:53,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:06:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:53,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:06:53,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:06:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 06:06:53,527 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:06:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568753180] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:53,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:06:53,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 06:06:53,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976426669] [2024-12-02 06:06:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:53,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:06:53,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:53,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:06:53,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:06:53,528 INFO L87 Difference]: Start difference. First operand 80244 states and 150623 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 06:07:04,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:04,341 INFO L93 Difference]: Finished difference Result 229920 states and 519845 transitions. [2024-12-02 06:07:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:07:04,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 223 [2024-12-02 06:07:04,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:05,499 INFO L225 Difference]: With dead ends: 229920 [2024-12-02 06:07:05,499 INFO L226 Difference]: Without dead ends: 149598 [2024-12-02 06:07:06,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:07:06,499 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 2222 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 3900 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 3900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:06,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2329 Valid, 2412 Invalid, 4677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 3900 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 06:07:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149598 states. [2024-12-02 06:07:12,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149598 to 126908. [2024-12-02 06:07:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126908 states, 98900 states have (on average 1.5606268958543983) internal successors, (154346), 102145 states have internal predecessors, (154346), 21340 states have call successors, (21340), 5836 states have call predecessors, (21340), 6667 states have return successors, (73969), 21602 states have call predecessors, (73969), 21258 states have call successors, (73969) [2024-12-02 06:07:13,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126908 states to 126908 states and 249655 transitions. [2024-12-02 06:07:13,227 INFO L78 Accepts]: Start accepts. Automaton has 126908 states and 249655 transitions. Word has length 223 [2024-12-02 06:07:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:13,227 INFO L471 AbstractCegarLoop]: Abstraction has 126908 states and 249655 transitions. [2024-12-02 06:07:13,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 06:07:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 126908 states and 249655 transitions. [2024-12-02 06:07:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-12-02 06:07:13,240 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:13,240 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:13,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:07:13,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 06:07:13,441 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:13,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:13,441 INFO L85 PathProgramCache]: Analyzing trace with hash 302424398, now seen corresponding path program 1 times [2024-12-02 06:07:13,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:13,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828954452] [2024-12-02 06:07:13,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:13,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-12-02 06:07:13,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828954452] [2024-12-02 06:07:13,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828954452] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916117864] [2024-12-02 06:07:13,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:13,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:13,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:13,657 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:13,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:07:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:14,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:07:14,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 06:07:14,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:07:14,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916117864] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:14,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:07:14,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 06:07:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718085846] [2024-12-02 06:07:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:14,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:07:14,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:14,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:07:14,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:07:14,420 INFO L87 Difference]: Start difference. First operand 126908 states and 249655 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 06:07:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:27,358 INFO L93 Difference]: Finished difference Result 292828 states and 698618 transitions. [2024-12-02 06:07:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:07:27,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 225 [2024-12-02 06:07:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:28,767 INFO L225 Difference]: With dead ends: 292828 [2024-12-02 06:07:28,767 INFO L226 Difference]: Without dead ends: 165362 [2024-12-02 06:07:30,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:07:30,185 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 2216 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 4586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:30,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 2401 Invalid, 4586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 06:07:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165362 states. [2024-12-02 06:07:36,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165362 to 135066. [2024-12-02 06:07:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135066 states, 106027 states have (on average 1.5578107463193338) internal successors, (165170), 109344 states have internal predecessors, (165170), 21628 states have call successors, (21628), 6444 states have call predecessors, (21628), 7410 states have return successors, (75436), 21953 states have call predecessors, (75436), 21546 states have call successors, (75436) [2024-12-02 06:07:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135066 states to 135066 states and 262234 transitions. [2024-12-02 06:07:38,275 INFO L78 Accepts]: Start accepts. Automaton has 135066 states and 262234 transitions. Word has length 225 [2024-12-02 06:07:38,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:38,275 INFO L471 AbstractCegarLoop]: Abstraction has 135066 states and 262234 transitions. [2024-12-02 06:07:38,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 06:07:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 135066 states and 262234 transitions. [2024-12-02 06:07:38,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-12-02 06:07:38,291 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:38,291 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:38,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:07:38,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 06:07:38,492 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:38,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:38,492 INFO L85 PathProgramCache]: Analyzing trace with hash -851774815, now seen corresponding path program 1 times [2024-12-02 06:07:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:38,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240204445] [2024-12-02 06:07:38,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-12-02 06:07:38,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240204445] [2024-12-02 06:07:38,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240204445] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142310689] [2024-12-02 06:07:38,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:38,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:38,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:38,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:38,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:07:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:39,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:07:39,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 06:07:39,174 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:07:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142310689] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:39,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:07:39,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 06:07:39,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174260636] [2024-12-02 06:07:39,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:39,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:07:39,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:39,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:07:39,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:07:39,176 INFO L87 Difference]: Start difference. First operand 135066 states and 262234 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 06:07:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:53,998 INFO L93 Difference]: Finished difference Result 309144 states and 720858 transitions. [2024-12-02 06:07:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:07:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 228 [2024-12-02 06:07:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:55,483 INFO L225 Difference]: With dead ends: 309144 [2024-12-02 06:07:55,483 INFO L226 Difference]: Without dead ends: 173232 [2024-12-02 06:07:56,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:07:56,927 INFO L435 NwaCegarLoop]: 595 mSDtfsCounter, 2212 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 4524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:56,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 2403 Invalid, 4524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 06:07:56,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173232 states. [2024-12-02 06:08:03,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173232 to 143305. [2024-12-02 06:08:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143305 states, 113154 states have (on average 1.5534492815101544) internal successors, (175779), 116510 states have internal predecessors, (175779), 21786 states have call successors, (21786), 7196 states have call predecessors, (21786), 8364 states have return successors, (77246), 22274 states have call predecessors, (77246), 21704 states have call successors, (77246) [2024-12-02 06:08:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143305 states to 143305 states and 274811 transitions. [2024-12-02 06:08:05,543 INFO L78 Accepts]: Start accepts. Automaton has 143305 states and 274811 transitions. Word has length 228 [2024-12-02 06:08:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:08:05,543 INFO L471 AbstractCegarLoop]: Abstraction has 143305 states and 274811 transitions. [2024-12-02 06:08:05,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2024-12-02 06:08:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 143305 states and 274811 transitions. [2024-12-02 06:08:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-12-02 06:08:05,555 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:08:05,555 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 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, 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] [2024-12-02 06:08:05,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:08:05,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:08:05,756 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:08:05,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:08:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1783446103, now seen corresponding path program 1 times [2024-12-02 06:08:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:08:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220739834] [2024-12-02 06:08:05,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:08:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:08:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:08:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-12-02 06:08:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:08:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220739834] [2024-12-02 06:08:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220739834] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:08:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849190174] [2024-12-02 06:08:06,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:08:06,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:08:06,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:08:06,023 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:08:06,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:08:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:08:06,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 06:08:06,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:08:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-12-02 06:08:06,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:08:06,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849190174] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:08:06,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:08:06,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2024-12-02 06:08:06,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907173472] [2024-12-02 06:08:06,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:08:06,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:08:06,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:08:06,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:08:06,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:08:06,520 INFO L87 Difference]: Start difference. First operand 143305 states and 274811 transitions. Second operand has 10 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 6 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2024-12-02 06:08:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:08:22,051 INFO L93 Difference]: Finished difference Result 332439 states and 732732 transitions. [2024-12-02 06:08:22,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 06:08:22,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 6 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) Word has length 230 [2024-12-02 06:08:22,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:08:23,817 INFO L225 Difference]: With dead ends: 332439 [2024-12-02 06:08:23,817 INFO L226 Difference]: Without dead ends: 185184 [2024-12-02 06:08:25,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 06:08:25,211 INFO L435 NwaCegarLoop]: 698 mSDtfsCounter, 2164 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 7265 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 4233 SdHoareTripleChecker+Invalid, 7887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 7265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:08:25,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 4233 Invalid, 7887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 7265 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 06:08:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185184 states. [2024-12-02 06:08:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185184 to 149713. [2024-12-02 06:08:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149713 states, 116815 states have (on average 1.5491846081410778) internal successors, (180968), 120837 states have internal predecessors, (180968), 24390 states have call successors, (24390), 7196 states have call predecessors, (24390), 8507 states have return successors, (83115), 24919 states have call predecessors, (83115), 24308 states have call successors, (83115) [2024-12-02 06:08:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149713 states to 149713 states and 288473 transitions. [2024-12-02 06:08:34,471 INFO L78 Accepts]: Start accepts. Automaton has 149713 states and 288473 transitions. Word has length 230 [2024-12-02 06:08:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:08:34,471 INFO L471 AbstractCegarLoop]: Abstraction has 149713 states and 288473 transitions. [2024-12-02 06:08:34,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 6 states have call successors, (30), 4 states have call predecessors, (30), 6 states have return successors, (28), 6 states have call predecessors, (28), 6 states have call successors, (28) [2024-12-02 06:08:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 149713 states and 288473 transitions. [2024-12-02 06:08:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-12-02 06:08:34,484 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:08:34,485 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:08:34,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:08:34,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:08:34,685 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:08:34,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:08:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1632001177, now seen corresponding path program 1 times [2024-12-02 06:08:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:08:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572805748] [2024-12-02 06:08:34,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:08:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:08:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:08:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 06:08:34,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:08:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572805748] [2024-12-02 06:08:34,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572805748] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:08:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132669391] [2024-12-02 06:08:34,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:08:34,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:08:34,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:08:34,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:08:34,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91373d5f-c5f8-4830-b6c1-aa235cb676eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:08:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:08:35,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:08:35,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:08:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 06:08:35,365 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:08:35,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132669391] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:08:35,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:08:35,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 06:08:35,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465146950] [2024-12-02 06:08:35,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:08:35,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:08:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:08:35,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:08:35,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:08:35,366 INFO L87 Difference]: Start difference. First operand 149713 states and 288473 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25)