./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.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_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/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_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/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_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/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 bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:51:25,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:51:25,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:51:25,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:51:25,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:51:25,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:51:25,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:51:25,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:51:25,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:51:25,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:51:25,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:51:25,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:51:25,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:51:25,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:51:25,983 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:51:25,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:51:25,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:51:25,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:51:25,985 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:51:25,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:51:25,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:51:25,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:51:25,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:51:25,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:51:25,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:51:25,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:51:25,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:51:25,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:51:25,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:51:25,986 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:51:25,986 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_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/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 -> bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 [2024-12-02 12:51:26,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:51:26,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:51:26,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:51:26,281 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:51:26,282 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:51:26,283 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2024-12-02 12:51:29,118 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/data/77ef0dfd5/e4266b5c02ee4f56afb0e7c21e303ec9/FLAGe5c8de3a9 [2024-12-02 12:51:29,376 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:51:29,377 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2024-12-02 12:51:29,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/data/77ef0dfd5/e4266b5c02ee4f56afb0e7c21e303ec9/FLAGe5c8de3a9 [2024-12-02 12:51:29,409 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/data/77ef0dfd5/e4266b5c02ee4f56afb0e7c21e303ec9 [2024-12-02 12:51:29,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:51:29,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:51:29,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:51:29,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:51:29,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:51:29,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:29" (1/1) ... [2024-12-02 12:51:29,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c85b4b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:29, skipping insertion in model container [2024-12-02 12:51:29,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:29" (1/1) ... [2024-12-02 12:51:29,465 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:51:29,671 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2024-12-02 12:51:29,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:51:29,899 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:51:29,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-12-02 12:51:29,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [414] [2024-12-02 12:51:29,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [423] [2024-12-02 12:51:29,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [787] [2024-12-02 12:51:29,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1459] [2024-12-02 12:51:29,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3107] [2024-12-02 12:51:29,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3198] [2024-12-02 12:51:29,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3379] [2024-12-02 12:51:29,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3392] [2024-12-02 12:51:29,909 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3510] [2024-12-02 12:51:29,933 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_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2024-12-02 12:51:30,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:51:30,030 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:51:30,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30 WrapperNode [2024-12-02 12:51:30,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:51:30,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:51:30,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:51:30,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:51:30,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,088 INFO L138 Inliner]: procedures = 98, calls = 354, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 924 [2024-12-02 12:51:30,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:51:30,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:51:30,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:51:30,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:51:30,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,126 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 12:51:30,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,145 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:51:30,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:51:30,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:51:30,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:51:30,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (1/1) ... [2024-12-02 12:51:30,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:51:30,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:30,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:51:30,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:51:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 12:51:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 12:51:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 12:51:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 12:51:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 12:51:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 12:51:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 12:51:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 12:51:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 12:51:30,241 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 12:51:30,241 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 12:51:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 12:51:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 12:51:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 12:51:30,242 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 12:51:30,242 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 12:51:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 12:51:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 12:51:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 12:51:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 12:51:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-12-02 12:51:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-12-02 12:51:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:51:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 12:51:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-12-02 12:51:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 12:51:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 12:51:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 12:51:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 12:51:30,243 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 12:51:30,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 12:51:30,244 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 12:51:30,244 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 12:51:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:51:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:51:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 12:51:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 12:51:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 12:51:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 12:51:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 12:51:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 12:51:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 12:51:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 12:51:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 12:51:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 12:51:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:51:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:51:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 12:51:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 12:51:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-12-02 12:51:30,248 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-12-02 12:51:30,410 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:51:30,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:51:31,509 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2024-12-02 12:51:31,509 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:51:31,530 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:51:31,531 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:51:31,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:31 BoogieIcfgContainer [2024-12-02 12:51:31,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:51:31,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:51:31,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:51:31,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:51:31,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:51:29" (1/3) ... [2024-12-02 12:51:31,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f40d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:31, skipping insertion in model container [2024-12-02 12:51:31,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:30" (2/3) ... [2024-12-02 12:51:31,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f40d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:31, skipping insertion in model container [2024-12-02 12:51:31,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:31" (3/3) ... [2024-12-02 12:51:31,540 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2024-12-02 12:51:31,552 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:51:31,554 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product24.cil.c that has 29 procedures, 602 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:51:31,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:51:31,630 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;@6d57e26f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:51:31,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:51:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 602 states, 464 states have (on average 1.6724137931034482) internal successors, (776), 487 states have internal predecessors, (776), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 12:51:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 12:51:31,649 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:31,650 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:31,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:31,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1223729974, now seen corresponding path program 1 times [2024-12-02 12:51:31,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:31,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634656167] [2024-12-02 12:51:31,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:31,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 12:51:32,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:32,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634656167] [2024-12-02 12:51:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634656167] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:32,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52030915] [2024-12-02 12:51:32,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:32,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:32,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:32,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:32,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:51:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:32,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:51:32,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 12:51:32,676 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52030915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:32,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:32,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-12-02 12:51:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154013486] [2024-12-02 12:51:32,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:32,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:51:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:32,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:51:32,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:51:32,706 INFO L87 Difference]: Start difference. First operand has 602 states, 464 states have (on average 1.6724137931034482) internal successors, (776), 487 states have internal predecessors, (776), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-12-02 12:51:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:32,776 INFO L93 Difference]: Finished difference Result 623 states and 1022 transitions. [2024-12-02 12:51:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:51:32,778 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2024-12-02 12:51:32,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:32,794 INFO L225 Difference]: With dead ends: 623 [2024-12-02 12:51:32,795 INFO L226 Difference]: Without dead ends: 594 [2024-12-02 12:51:32,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 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 12:51:32,801 INFO L435 NwaCegarLoop]: 983 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:32,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-12-02 12:51:32,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-12-02 12:51:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 458 states have (on average 1.6703056768558953) internal successors, (765), 479 states have internal predecessors, (765), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 976 transitions. [2024-12-02 12:51:32,884 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 976 transitions. Word has length 83 [2024-12-02 12:51:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:32,885 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 976 transitions. [2024-12-02 12:51:32,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-12-02 12:51:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 976 transitions. [2024-12-02 12:51:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 12:51:32,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:32,890 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:32,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:51:33,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:51:33,091 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:33,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1676849438, now seen corresponding path program 1 times [2024-12-02 12:51:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:33,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326306881] [2024-12-02 12:51:33,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 12:51:33,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:33,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326306881] [2024-12-02 12:51:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326306881] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:33,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363728230] [2024-12-02 12:51:33,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:33,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:33,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:33,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:33,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:51:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:33,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:33,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:51:33,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:33,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363728230] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:33,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:33,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:51:33,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482931576] [2024-12-02 12:51:33,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:33,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:33,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:33,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:33,737 INFO L87 Difference]: Start difference. First operand 594 states and 976 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:33,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:33,821 INFO L93 Difference]: Finished difference Result 1179 states and 1944 transitions. [2024-12-02 12:51:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-12-02 12:51:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:33,829 INFO L225 Difference]: With dead ends: 1179 [2024-12-02 12:51:33,829 INFO L226 Difference]: Without dead ends: 594 [2024-12-02 12:51:33,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:33,834 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 5 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:33,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2886 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-12-02 12:51:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-12-02 12:51:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 458 states have (on average 1.668122270742358) internal successors, (764), 479 states have internal predecessors, (764), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 975 transitions. [2024-12-02 12:51:33,862 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 975 transitions. Word has length 84 [2024-12-02 12:51:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:33,862 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 975 transitions. [2024-12-02 12:51:33,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 975 transitions. [2024-12-02 12:51:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 12:51:33,865 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:33,865 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:33,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:51:34,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:34,066 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:34,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1807462602, now seen corresponding path program 1 times [2024-12-02 12:51:34,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:34,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345083657] [2024-12-02 12:51:34,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:34,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 12:51:34,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345083657] [2024-12-02 12:51:34,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345083657] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170111611] [2024-12-02 12:51:34,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:34,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:34,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:34,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:34,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:51:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:34,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:34,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:51:34,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170111611] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:34,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:51:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56172078] [2024-12-02 12:51:34,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:34,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:34,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:34,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:34,553 INFO L87 Difference]: Start difference. First operand 594 states and 975 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:34,619 INFO L93 Difference]: Finished difference Result 1179 states and 1942 transitions. [2024-12-02 12:51:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:34,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-12-02 12:51:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:34,625 INFO L225 Difference]: With dead ends: 1179 [2024-12-02 12:51:34,625 INFO L226 Difference]: Without dead ends: 594 [2024-12-02 12:51:34,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:34,629 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 4 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:34,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2886 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-12-02 12:51:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-12-02 12:51:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 458 states have (on average 1.665938864628821) internal successors, (763), 479 states have internal predecessors, (763), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 974 transitions. [2024-12-02 12:51:34,659 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 974 transitions. Word has length 86 [2024-12-02 12:51:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:34,659 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 974 transitions. [2024-12-02 12:51:34,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:34,659 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 974 transitions. [2024-12-02 12:51:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 12:51:34,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:34,661 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:34,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:51:34,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:34,871 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:34,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash -504922462, now seen corresponding path program 1 times [2024-12-02 12:51:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:34,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333913623] [2024-12-02 12:51:34,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:34,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 12:51:34,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:34,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333913623] [2024-12-02 12:51:34,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333913623] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:34,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620316330] [2024-12-02 12:51:34,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:34,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:34,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:34,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:34,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:51:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:35,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:35,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:51:35,356 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620316330] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:35,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:35,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:51:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765383118] [2024-12-02 12:51:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:35,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:35,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:35,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:35,358 INFO L87 Difference]: Start difference. First operand 594 states and 974 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:35,429 INFO L93 Difference]: Finished difference Result 1186 states and 1949 transitions. [2024-12-02 12:51:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-12-02 12:51:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:35,433 INFO L225 Difference]: With dead ends: 1186 [2024-12-02 12:51:35,433 INFO L226 Difference]: Without dead ends: 603 [2024-12-02 12:51:35,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:51:35,436 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 13 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:35,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2883 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-12-02 12:51:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2024-12-02 12:51:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 466 states have (on average 1.6630901287553648) internal successors, (775), 487 states have internal predecessors, (775), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 986 transitions. [2024-12-02 12:51:35,456 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 986 transitions. Word has length 88 [2024-12-02 12:51:35,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:35,456 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 986 transitions. [2024-12-02 12:51:35,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:35,456 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 986 transitions. [2024-12-02 12:51:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 12:51:35,458 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:35,458 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:35,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:51:35,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:35,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:35,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash 441008751, now seen corresponding path program 1 times [2024-12-02 12:51:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:35,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369179434] [2024-12-02 12:51:35,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:35,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 12:51:35,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369179434] [2024-12-02 12:51:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369179434] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210467717] [2024-12-02 12:51:35,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:35,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:35,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:35,757 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:35,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:51:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:36,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:36,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:51:36,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210467717] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:36,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:51:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136363864] [2024-12-02 12:51:36,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:36,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:36,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:36,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:36,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:36,143 INFO L87 Difference]: Start difference. First operand 603 states and 986 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:36,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:36,218 INFO L93 Difference]: Finished difference Result 1188 states and 1950 transitions. [2024-12-02 12:51:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-12-02 12:51:36,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:36,224 INFO L225 Difference]: With dead ends: 1188 [2024-12-02 12:51:36,224 INFO L226 Difference]: Without dead ends: 603 [2024-12-02 12:51:36,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:51:36,227 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 11 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:36,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2883 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-12-02 12:51:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2024-12-02 12:51:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 466 states have (on average 1.6609442060085837) internal successors, (774), 487 states have internal predecessors, (774), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 985 transitions. [2024-12-02 12:51:36,253 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 985 transitions. Word has length 89 [2024-12-02 12:51:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:36,253 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 985 transitions. [2024-12-02 12:51:36,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 985 transitions. [2024-12-02 12:51:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 12:51:36,255 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:36,255 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:36,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:51:36,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:36,456 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:36,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1474550974, now seen corresponding path program 1 times [2024-12-02 12:51:36,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:36,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199559006] [2024-12-02 12:51:36,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:36,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 12:51:36,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199559006] [2024-12-02 12:51:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199559006] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405158928] [2024-12-02 12:51:36,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:36,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:36,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:36,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:36,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:51:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:36,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:36,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:51:36,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:36,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405158928] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:36,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:36,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:51:36,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140847177] [2024-12-02 12:51:36,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:36,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:36,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:36,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:36,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:36,936 INFO L87 Difference]: Start difference. First operand 603 states and 985 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:36,995 INFO L93 Difference]: Finished difference Result 1188 states and 1949 transitions. [2024-12-02 12:51:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-12-02 12:51:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:36,999 INFO L225 Difference]: With dead ends: 1188 [2024-12-02 12:51:36,999 INFO L226 Difference]: Without dead ends: 603 [2024-12-02 12:51:37,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:51:37,001 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 10 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:37,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2883 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:37,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-12-02 12:51:37,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2024-12-02 12:51:37,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 466 states have (on average 1.6587982832618027) internal successors, (773), 487 states have internal predecessors, (773), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 984 transitions. [2024-12-02 12:51:37,017 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 984 transitions. Word has length 90 [2024-12-02 12:51:37,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:37,017 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 984 transitions. [2024-12-02 12:51:37,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 984 transitions. [2024-12-02 12:51:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 12:51:37,035 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:37,036 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:37,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:51:37,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 12:51:37,236 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:37,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:37,237 INFO L85 PathProgramCache]: Analyzing trace with hash 929067211, now seen corresponding path program 1 times [2024-12-02 12:51:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:37,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972615868] [2024-12-02 12:51:37,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972615868] [2024-12-02 12:51:37,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972615868] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090014183] [2024-12-02 12:51:37,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:37,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:37,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:37,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:37,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:51:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:37,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:37,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:37,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:37,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090014183] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:37,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:37,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 12:51:37,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801259545] [2024-12-02 12:51:37,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:37,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:37,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:37,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:37,780 INFO L87 Difference]: Start difference. First operand 603 states and 984 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:37,925 INFO L93 Difference]: Finished difference Result 1214 states and 1996 transitions. [2024-12-02 12:51:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-12-02 12:51:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:37,931 INFO L225 Difference]: With dead ends: 1214 [2024-12-02 12:51:37,931 INFO L226 Difference]: Without dead ends: 618 [2024-12-02 12:51:37,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:37,935 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 76 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:37,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2774 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:51:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-12-02 12:51:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 603. [2024-12-02 12:51:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 466 states have (on average 1.648068669527897) internal successors, (768), 487 states have internal predecessors, (768), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 979 transitions. [2024-12-02 12:51:37,961 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 979 transitions. Word has length 91 [2024-12-02 12:51:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:37,961 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 979 transitions. [2024-12-02 12:51:37,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 979 transitions. [2024-12-02 12:51:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 12:51:37,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:37,963 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:37,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:51:38,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 12:51:38,164 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:38,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:38,164 INFO L85 PathProgramCache]: Analyzing trace with hash 926086047, now seen corresponding path program 1 times [2024-12-02 12:51:38,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:38,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478167715] [2024-12-02 12:51:38,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:38,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:38,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478167715] [2024-12-02 12:51:38,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478167715] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:38,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924477629] [2024-12-02 12:51:38,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:38,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:38,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:38,382 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:38,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:51:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:38,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:38,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:38,758 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924477629] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:38,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:38,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 12:51:38,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662028865] [2024-12-02 12:51:38,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:38,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:38,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:38,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:38,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:38,759 INFO L87 Difference]: Start difference. First operand 603 states and 979 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:38,887 INFO L93 Difference]: Finished difference Result 1214 states and 1986 transitions. [2024-12-02 12:51:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:38,888 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2024-12-02 12:51:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:38,893 INFO L225 Difference]: With dead ends: 1214 [2024-12-02 12:51:38,893 INFO L226 Difference]: Without dead ends: 618 [2024-12-02 12:51:38,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:38,897 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 75 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:38,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2774 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:51:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-12-02 12:51:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 603. [2024-12-02 12:51:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 466 states have (on average 1.6373390557939915) internal successors, (763), 487 states have internal predecessors, (763), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 974 transitions. [2024-12-02 12:51:38,922 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 974 transitions. Word has length 93 [2024-12-02 12:51:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:38,923 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 974 transitions. [2024-12-02 12:51:38,923 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 974 transitions. [2024-12-02 12:51:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 12:51:38,925 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:38,925 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:38,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:51:39,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:39,126 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:39,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash 362247595, now seen corresponding path program 1 times [2024-12-02 12:51:39,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:39,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144094394] [2024-12-02 12:51:39,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:39,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:39,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:39,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144094394] [2024-12-02 12:51:39,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144094394] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:39,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115621792] [2024-12-02 12:51:39,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:39,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:39,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:39,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:39,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:51:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:39,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:39,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:39,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:39,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115621792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:39,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:39,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 12:51:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513488281] [2024-12-02 12:51:39,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:39,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:39,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:39,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:39,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:39,713 INFO L87 Difference]: Start difference. First operand 603 states and 974 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:39,906 INFO L93 Difference]: Finished difference Result 1265 states and 2059 transitions. [2024-12-02 12:51:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2024-12-02 12:51:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:39,913 INFO L225 Difference]: With dead ends: 1265 [2024-12-02 12:51:39,913 INFO L226 Difference]: Without dead ends: 684 [2024-12-02 12:51:39,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:39,917 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 130 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:39,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2805 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:51:39,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-12-02 12:51:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 654. [2024-12-02 12:51:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 516 states have (on average 1.6434108527131783) internal successors, (848), 537 states have internal predecessors, (848), 108 states have call successors, (108), 30 states have call predecessors, (108), 29 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1059 transitions. [2024-12-02 12:51:39,947 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1059 transitions. Word has length 95 [2024-12-02 12:51:39,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:39,948 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1059 transitions. [2024-12-02 12:51:39,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:39,948 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1059 transitions. [2024-12-02 12:51:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 12:51:39,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:39,950 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:39,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:51:40,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 12:51:40,150 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:40,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1743130621, now seen corresponding path program 1 times [2024-12-02 12:51:40,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:40,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082391251] [2024-12-02 12:51:40,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:40,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082391251] [2024-12-02 12:51:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082391251] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191466428] [2024-12-02 12:51:40,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:40,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:40,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:40,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:40,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:51:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:40,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:40,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:40,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:40,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191466428] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:40,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:40,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 12:51:40,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873081766] [2024-12-02 12:51:40,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:40,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:40,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:40,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:40,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:40,706 INFO L87 Difference]: Start difference. First operand 654 states and 1059 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:40,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:40,936 INFO L93 Difference]: Finished difference Result 1280 states and 2083 transitions. [2024-12-02 12:51:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:40,936 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2024-12-02 12:51:40,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:40,940 INFO L225 Difference]: With dead ends: 1280 [2024-12-02 12:51:40,940 INFO L226 Difference]: Without dead ends: 684 [2024-12-02 12:51:40,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:40,942 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 124 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:40,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2778 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:51:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-12-02 12:51:40,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 654. [2024-12-02 12:51:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 516 states have (on average 1.6337209302325582) internal successors, (843), 537 states have internal predecessors, (843), 108 states have call successors, (108), 30 states have call predecessors, (108), 29 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-12-02 12:51:40,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1054 transitions. [2024-12-02 12:51:40,961 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1054 transitions. Word has length 96 [2024-12-02 12:51:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:40,961 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1054 transitions. [2024-12-02 12:51:40,961 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1054 transitions. [2024-12-02 12:51:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 12:51:40,962 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:40,962 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:40,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:51:41,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 12:51:41,163 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:41,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:41,164 INFO L85 PathProgramCache]: Analyzing trace with hash 10429284, now seen corresponding path program 1 times [2024-12-02 12:51:41,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:41,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259739159] [2024-12-02 12:51:41,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:41,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:41,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:41,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259739159] [2024-12-02 12:51:41,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259739159] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:41,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64580461] [2024-12-02 12:51:41,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:41,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:41,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:41,341 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:41,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:51:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:41,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:51:41,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:51:41,698 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:41,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64580461] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:41,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:41,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 12:51:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432532030] [2024-12-02 12:51:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:41,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:51:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:41,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:51:41,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:51:41,699 INFO L87 Difference]: Start difference. First operand 654 states and 1054 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:41,856 INFO L93 Difference]: Finished difference Result 1273 states and 2063 transitions. [2024-12-02 12:51:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:51:41,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-12-02 12:51:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:41,862 INFO L225 Difference]: With dead ends: 1273 [2024-12-02 12:51:41,862 INFO L226 Difference]: Without dead ends: 692 [2024-12-02 12:51:41,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:51:41,866 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 113 mSDsluCounter, 5575 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6519 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:41,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6519 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:51:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-12-02 12:51:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 673. [2024-12-02 12:51:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 532 states have (on average 1.6334586466165413) internal successors, (869), 555 states have internal predecessors, (869), 109 states have call successors, (109), 30 states have call predecessors, (109), 31 states have return successors, (106), 101 states have call predecessors, (106), 104 states have call successors, (106) [2024-12-02 12:51:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1084 transitions. [2024-12-02 12:51:41,896 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1084 transitions. Word has length 96 [2024-12-02 12:51:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:41,896 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1084 transitions. [2024-12-02 12:51:41,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1084 transitions. [2024-12-02 12:51:41,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 12:51:41,898 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:41,898 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:41,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:51:42,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:42,099 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:42,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash 130549157, now seen corresponding path program 1 times [2024-12-02 12:51:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473023518] [2024-12-02 12:51:42,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:51:42,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473023518] [2024-12-02 12:51:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473023518] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374790959] [2024-12-02 12:51:42,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:42,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:42,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:42,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:42,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:51:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:42,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 12:51:42,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:42,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374790959] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:42,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:42,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 12:51:42,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246395913] [2024-12-02 12:51:42,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:42,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:51:42,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:42,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:51:42,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:42,520 INFO L87 Difference]: Start difference. First operand 673 states and 1084 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:42,609 INFO L93 Difference]: Finished difference Result 1211 states and 1963 transitions. [2024-12-02 12:51:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:51:42,609 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-12-02 12:51:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:42,615 INFO L225 Difference]: With dead ends: 1211 [2024-12-02 12:51:42,615 INFO L226 Difference]: Without dead ends: 697 [2024-12-02 12:51:42,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:42,618 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 86 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:42,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5663 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:42,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-12-02 12:51:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 692. [2024-12-02 12:51:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6332116788321167) internal successors, (895), 573 states have internal predecessors, (895), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2024-12-02 12:51:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1114 transitions. [2024-12-02 12:51:42,647 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1114 transitions. Word has length 96 [2024-12-02 12:51:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:42,648 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1114 transitions. [2024-12-02 12:51:42,648 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1114 transitions. [2024-12-02 12:51:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 12:51:42,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:42,650 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:42,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 12:51:42,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:42,850 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:42,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash 441171058, now seen corresponding path program 1 times [2024-12-02 12:51:42,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:42,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741568240] [2024-12-02 12:51:42,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:42,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 12:51:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:42,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741568240] [2024-12-02 12:51:42,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741568240] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:42,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795303424] [2024-12-02 12:51:42,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:42,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:42,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:42,932 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:42,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 12:51:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:43,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 12:51:43,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:43,271 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795303424] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 12:51:43,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769760977] [2024-12-02 12:51:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:43,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:51:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:43,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:51:43,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:43,273 INFO L87 Difference]: Start difference. First operand 692 states and 1114 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:43,358 INFO L93 Difference]: Finished difference Result 1241 states and 2014 transitions. [2024-12-02 12:51:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:51:43,358 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-12-02 12:51:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:43,364 INFO L225 Difference]: With dead ends: 1241 [2024-12-02 12:51:43,364 INFO L226 Difference]: Without dead ends: 727 [2024-12-02 12:51:43,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:43,366 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 95 mSDsluCounter, 4696 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5653 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:43,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5653 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-12-02 12:51:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 692. [2024-12-02 12:51:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6332116788321167) internal successors, (895), 573 states have internal predecessors, (895), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2024-12-02 12:51:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1114 transitions. [2024-12-02 12:51:43,394 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1114 transitions. Word has length 97 [2024-12-02 12:51:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:43,394 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1114 transitions. [2024-12-02 12:51:43,394 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, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1114 transitions. [2024-12-02 12:51:43,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 12:51:43,396 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:43,396 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:43,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 12:51:43,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:43,597 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:43,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1959456754, now seen corresponding path program 1 times [2024-12-02 12:51:43,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:43,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775468609] [2024-12-02 12:51:43,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 12:51:43,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:43,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775468609] [2024-12-02 12:51:43,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775468609] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:43,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846719483] [2024-12-02 12:51:43,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:43,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:43,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:43,687 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:43,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 12:51:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:43,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:51:43,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:44,047 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:44,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846719483] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:44,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:44,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 12:51:44,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185272812] [2024-12-02 12:51:44,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:44,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:51:44,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:44,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:51:44,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:44,049 INFO L87 Difference]: Start difference. First operand 692 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:44,176 INFO L93 Difference]: Finished difference Result 1226 states and 1988 transitions. [2024-12-02 12:51:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:51:44,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-12-02 12:51:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:44,181 INFO L225 Difference]: With dead ends: 1226 [2024-12-02 12:51:44,182 INFO L226 Difference]: Without dead ends: 712 [2024-12-02 12:51:44,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:51:44,184 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 113 mSDsluCounter, 5581 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:44,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6527 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:51:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-12-02 12:51:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 692. [2024-12-02 12:51:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6332116788321167) internal successors, (895), 573 states have internal predecessors, (895), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2024-12-02 12:51:44,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1114 transitions. [2024-12-02 12:51:44,209 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1114 transitions. Word has length 97 [2024-12-02 12:51:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:44,210 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1114 transitions. [2024-12-02 12:51:44,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:44,210 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1114 transitions. [2024-12-02 12:51:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 12:51:44,211 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:44,212 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:44,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 12:51:44,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 12:51:44,412 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:44,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:44,413 INFO L85 PathProgramCache]: Analyzing trace with hash -728281038, now seen corresponding path program 1 times [2024-12-02 12:51:44,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:44,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379064622] [2024-12-02 12:51:44,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:44,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:51:44,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:44,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379064622] [2024-12-02 12:51:44,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379064622] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:44,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762994484] [2024-12-02 12:51:44,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:44,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:44,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:44,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:44,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 12:51:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:44,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:51:44,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:51:44,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:44,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762994484] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:44,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:44,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:51:44,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386407901] [2024-12-02 12:51:44,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:44,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:44,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:44,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:44,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:44,770 INFO L87 Difference]: Start difference. First operand 692 states and 1114 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:44,820 INFO L93 Difference]: Finished difference Result 1278 states and 2073 transitions. [2024-12-02 12:51:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:51:44,830 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2024-12-02 12:51:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:44,835 INFO L225 Difference]: With dead ends: 1278 [2024-12-02 12:51:44,835 INFO L226 Difference]: Without dead ends: 692 [2024-12-02 12:51:44,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:51:44,838 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 13 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:44,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2852 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-12-02 12:51:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2024-12-02 12:51:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 548 states have (on average 1.6259124087591241) internal successors, (891), 573 states have internal predecessors, (891), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2024-12-02 12:51:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1110 transitions. [2024-12-02 12:51:44,854 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1110 transitions. Word has length 97 [2024-12-02 12:51:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:44,855 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1110 transitions. [2024-12-02 12:51:44,855 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:44,855 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1110 transitions. [2024-12-02 12:51:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 12:51:44,856 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:44,856 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:44,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 12:51:45,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 12:51:45,056 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:45,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash 334753069, now seen corresponding path program 1 times [2024-12-02 12:51:45,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254674162] [2024-12-02 12:51:45,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 12:51:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254674162] [2024-12-02 12:51:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254674162] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822906160] [2024-12-02 12:51:45,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:45,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:45,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:45,113 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:45,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 12:51:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:45,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:51:45,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 12:51:45,422 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:45,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822906160] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:45,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:45,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:51:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756718778] [2024-12-02 12:51:45,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:45,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:51:45,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:45,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:51:45,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:45,424 INFO L87 Difference]: Start difference. First operand 692 states and 1110 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:45,473 INFO L93 Difference]: Finished difference Result 1322 states and 2141 transitions. [2024-12-02 12:51:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:51:45,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2024-12-02 12:51:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:45,478 INFO L225 Difference]: With dead ends: 1322 [2024-12-02 12:51:45,479 INFO L226 Difference]: Without dead ends: 716 [2024-12-02 12:51:45,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:51:45,481 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 7 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:45,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2825 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:51:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-12-02 12:51:45,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-12-02 12:51:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 572 states have (on average 1.6066433566433567) internal successors, (919), 597 states have internal predecessors, (919), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2024-12-02 12:51:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1138 transitions. [2024-12-02 12:51:45,505 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1138 transitions. Word has length 98 [2024-12-02 12:51:45,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:45,505 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 1138 transitions. [2024-12-02 12:51:45,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 12:51:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1138 transitions. [2024-12-02 12:51:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 12:51:45,507 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:45,507 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:45,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 12:51:45,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:45,708 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:45,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:45,708 INFO L85 PathProgramCache]: Analyzing trace with hash 311157340, now seen corresponding path program 1 times [2024-12-02 12:51:45,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:45,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245124393] [2024-12-02 12:51:45,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:45,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 12:51:45,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:45,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245124393] [2024-12-02 12:51:45,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245124393] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:45,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760127773] [2024-12-02 12:51:45,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:45,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:45,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:45,786 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:45,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 12:51:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:46,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:51:46,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 12:51:46,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:46,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760127773] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:46,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:46,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 12:51:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165978027] [2024-12-02 12:51:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:46,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:51:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:46,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:51:46,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:46,154 INFO L87 Difference]: Start difference. First operand 716 states and 1138 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:46,264 INFO L93 Difference]: Finished difference Result 1256 states and 2020 transitions. [2024-12-02 12:51:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:51:46,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-12-02 12:51:46,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:46,268 INFO L225 Difference]: With dead ends: 1256 [2024-12-02 12:51:46,268 INFO L226 Difference]: Without dead ends: 742 [2024-12-02 12:51:46,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:51:46,271 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 119 mSDsluCounter, 5543 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6483 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:46,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6483 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:51:46,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-12-02 12:51:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 716. [2024-12-02 12:51:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 572 states have (on average 1.6066433566433567) internal successors, (919), 597 states have internal predecessors, (919), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2024-12-02 12:51:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1138 transitions. [2024-12-02 12:51:46,294 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1138 transitions. Word has length 99 [2024-12-02 12:51:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:46,294 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 1138 transitions. [2024-12-02 12:51:46,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1138 transitions. [2024-12-02 12:51:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 12:51:46,296 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:46,297 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:46,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 12:51:46,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:51:46,497 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:46,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash -682202473, now seen corresponding path program 1 times [2024-12-02 12:51:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809819449] [2024-12-02 12:51:46,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 12:51:46,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:46,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809819449] [2024-12-02 12:51:46,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809819449] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:46,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483048262] [2024-12-02 12:51:46,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:46,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:46,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:46,579 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:46,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 12:51:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:46,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 12:51:46,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 12:51:47,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:47,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483048262] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:47,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:47,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2024-12-02 12:51:47,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071437637] [2024-12-02 12:51:47,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:47,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:51:47,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:47,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:51:47,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:51:47,128 INFO L87 Difference]: Start difference. First operand 716 states and 1138 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:49,915 INFO L93 Difference]: Finished difference Result 2348 states and 3851 transitions. [2024-12-02 12:51:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:51:49,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-12-02 12:51:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:49,925 INFO L225 Difference]: With dead ends: 2348 [2024-12-02 12:51:49,925 INFO L226 Difference]: Without dead ends: 1839 [2024-12-02 12:51:49,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:49,927 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 2963 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 4055 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 4621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 4055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:49,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3159 Valid, 1672 Invalid, 4621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 4055 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 12:51:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2024-12-02 12:51:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1652. [2024-12-02 12:51:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1303 states have (on average 1.6438986953184958) internal successors, (2142), 1346 states have internal predecessors, (2142), 277 states have call successors, (277), 66 states have call predecessors, (277), 71 states have return successors, (286), 254 states have call predecessors, (286), 272 states have call successors, (286) [2024-12-02 12:51:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2705 transitions. [2024-12-02 12:51:50,004 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2705 transitions. Word has length 99 [2024-12-02 12:51:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:50,005 INFO L471 AbstractCegarLoop]: Abstraction has 1652 states and 2705 transitions. [2024-12-02 12:51:50,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 12:51:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2705 transitions. [2024-12-02 12:51:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 12:51:50,010 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:50,010 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:50,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 12:51:50,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:51:50,211 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:50,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1885678382, now seen corresponding path program 1 times [2024-12-02 12:51:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:50,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504243481] [2024-12-02 12:51:50,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:50,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 12:51:50,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504243481] [2024-12-02 12:51:50,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504243481] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648465257] [2024-12-02 12:51:50,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:50,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:50,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:50,332 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:50,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 12:51:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:50,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:51:50,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 12:51:50,838 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648465257] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:50,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:50,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 12:51:50,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244025965] [2024-12-02 12:51:50,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:50,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:51:50,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:50,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:51:50,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:51:50,840 INFO L87 Difference]: Start difference. First operand 1652 states and 2705 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:51:51,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:51,296 INFO L93 Difference]: Finished difference Result 3121 states and 5225 transitions. [2024-12-02 12:51:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:51:51,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 154 [2024-12-02 12:51:51,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:51,304 INFO L225 Difference]: With dead ends: 3121 [2024-12-02 12:51:51,304 INFO L226 Difference]: Without dead ends: 1676 [2024-12-02 12:51:51,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:51:51,309 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 898 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:51,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2416 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:51:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2024-12-02 12:51:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2024-12-02 12:51:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1324 states have (on average 1.6450151057401812) internal successors, (2178), 1367 states have internal predecessors, (2178), 277 states have call successors, (277), 69 states have call predecessors, (277), 74 states have return successors, (289), 254 states have call predecessors, (289), 272 states have call successors, (289) [2024-12-02 12:51:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2744 transitions. [2024-12-02 12:51:51,375 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2744 transitions. Word has length 154 [2024-12-02 12:51:51,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:51,375 INFO L471 AbstractCegarLoop]: Abstraction has 1676 states and 2744 transitions. [2024-12-02 12:51:51,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:51:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2744 transitions. [2024-12-02 12:51:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 12:51:51,380 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:51,381 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:51,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 12:51:51,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:51,581 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:51,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1210783019, now seen corresponding path program 1 times [2024-12-02 12:51:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:51,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771621623] [2024-12-02 12:51:51,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 12:51:51,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:51,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771621623] [2024-12-02 12:51:51,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771621623] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:51,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859771242] [2024-12-02 12:51:51,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:51,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:51,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:51,683 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:51,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 12:51:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:52,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:51:52,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 12:51:52,109 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859771242] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:52,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:52,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 12:51:52,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805872147] [2024-12-02 12:51:52,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:52,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:51:52,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:52,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:51:52,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:51:52,111 INFO L87 Difference]: Start difference. First operand 1676 states and 2744 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 12:51:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:54,649 INFO L93 Difference]: Finished difference Result 4513 states and 7437 transitions. [2024-12-02 12:51:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:51:54,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 155 [2024-12-02 12:51:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:54,661 INFO L225 Difference]: With dead ends: 4513 [2024-12-02 12:51:54,661 INFO L226 Difference]: Without dead ends: 2857 [2024-12-02 12:51:54,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:51:54,667 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 1772 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 5762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:54,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 2064 Invalid, 5762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 12:51:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2024-12-02 12:51:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2638. [2024-12-02 12:51:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2058 states have (on average 1.6258503401360545) internal successors, (3346), 2110 states have internal predecessors, (3346), 455 states have call successors, (455), 105 states have call predecessors, (455), 124 states have return successors, (503), 433 states have call predecessors, (503), 450 states have call successors, (503) [2024-12-02 12:51:54,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4304 transitions. [2024-12-02 12:51:54,801 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4304 transitions. Word has length 155 [2024-12-02 12:51:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:54,801 INFO L471 AbstractCegarLoop]: Abstraction has 2638 states and 4304 transitions. [2024-12-02 12:51:54,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 12:51:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4304 transitions. [2024-12-02 12:51:54,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 12:51:54,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:54,805 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:54,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 12:51:55,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:55,006 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:55,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:55,006 INFO L85 PathProgramCache]: Analyzing trace with hash 662881886, now seen corresponding path program 1 times [2024-12-02 12:51:55,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:55,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645978626] [2024-12-02 12:51:55,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:55,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 12:51:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645978626] [2024-12-02 12:51:55,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645978626] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240171784] [2024-12-02 12:51:55,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:55,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:55,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:55,115 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:55,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 12:51:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:55,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 2101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:51:55,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 12:51:55,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:55,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240171784] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:55,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:55,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 12:51:55,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575941914] [2024-12-02 12:51:55,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:55,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:51:55,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:55,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:51:55,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:51:55,551 INFO L87 Difference]: Start difference. First operand 2638 states and 4304 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:51:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:56,066 INFO L93 Difference]: Finished difference Result 5117 states and 8527 transitions. [2024-12-02 12:51:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:51:56,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2024-12-02 12:51:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:56,079 INFO L225 Difference]: With dead ends: 5117 [2024-12-02 12:51:56,079 INFO L226 Difference]: Without dead ends: 2686 [2024-12-02 12:51:56,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:51:56,088 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 889 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:56,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2413 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:51:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2024-12-02 12:51:56,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2024-12-02 12:51:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2100 states have (on average 1.6276190476190475) internal successors, (3418), 2152 states have internal predecessors, (3418), 455 states have call successors, (455), 111 states have call predecessors, (455), 130 states have return successors, (508), 433 states have call predecessors, (508), 450 states have call successors, (508) [2024-12-02 12:51:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4381 transitions. [2024-12-02 12:51:56,176 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4381 transitions. Word has length 156 [2024-12-02 12:51:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:56,176 INFO L471 AbstractCegarLoop]: Abstraction has 2686 states and 4381 transitions. [2024-12-02 12:51:56,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:51:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4381 transitions. [2024-12-02 12:51:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 12:51:56,180 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:56,180 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:56,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 12:51:56,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 12:51:56,381 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:56,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1916434192, now seen corresponding path program 1 times [2024-12-02 12:51:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809587866] [2024-12-02 12:51:56,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 12:51:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:56,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809587866] [2024-12-02 12:51:56,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809587866] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:56,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315952609] [2024-12-02 12:51:56,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:56,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:56,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:56,497 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:56,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 12:51:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:56,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:51:56,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 12:51:56,917 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:56,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315952609] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:56,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:56,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 12:51:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091443441] [2024-12-02 12:51:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:56,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:51:56,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:56,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:51:56,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:51:56,919 INFO L87 Difference]: Start difference. First operand 2686 states and 4381 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:51:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:57,373 INFO L93 Difference]: Finished difference Result 5213 states and 8665 transitions. [2024-12-02 12:51:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:51:57,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 158 [2024-12-02 12:51:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:57,388 INFO L225 Difference]: With dead ends: 5213 [2024-12-02 12:51:57,388 INFO L226 Difference]: Without dead ends: 2734 [2024-12-02 12:51:57,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:51:57,404 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 880 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:57,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 2410 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:51:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2024-12-02 12:51:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2734. [2024-12-02 12:51:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2734 states, 2142 states have (on average 1.6293183940242764) internal successors, (3490), 2194 states have internal predecessors, (3490), 455 states have call successors, (455), 117 states have call predecessors, (455), 136 states have return successors, (513), 433 states have call predecessors, (513), 450 states have call successors, (513) [2024-12-02 12:51:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 4458 transitions. [2024-12-02 12:51:57,595 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 4458 transitions. Word has length 158 [2024-12-02 12:51:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:57,595 INFO L471 AbstractCegarLoop]: Abstraction has 2734 states and 4458 transitions. [2024-12-02 12:51:57,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:51:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 4458 transitions. [2024-12-02 12:51:57,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 12:51:57,600 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:57,600 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:57,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-12-02 12:51:57,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 12:51:57,801 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:57,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:57,801 INFO L85 PathProgramCache]: Analyzing trace with hash -136616218, now seen corresponding path program 1 times [2024-12-02 12:51:57,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177662536] [2024-12-02 12:51:57,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 12:51:57,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:57,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177662536] [2024-12-02 12:51:57,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177662536] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:57,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878416287] [2024-12-02 12:51:57,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:57,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:57,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:57,934 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:57,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 12:51:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:58,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:51:58,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:51:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 12:51:58,476 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:51:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878416287] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:51:58,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:51:58,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 12:51:58,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858872522] [2024-12-02 12:51:58,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:51:58,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:51:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:51:58,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:51:58,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:51:58,477 INFO L87 Difference]: Start difference. First operand 2734 states and 4458 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:51:59,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:51:59,174 INFO L93 Difference]: Finished difference Result 5309 states and 8803 transitions. [2024-12-02 12:51:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:51:59,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 160 [2024-12-02 12:51:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:51:59,196 INFO L225 Difference]: With dead ends: 5309 [2024-12-02 12:51:59,196 INFO L226 Difference]: Without dead ends: 2782 [2024-12-02 12:51:59,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:51:59,205 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 872 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:51:59,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 2407 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 12:51:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2024-12-02 12:51:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2782. [2024-12-02 12:51:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2184 states have (on average 1.630952380952381) internal successors, (3562), 2236 states have internal predecessors, (3562), 455 states have call successors, (455), 123 states have call predecessors, (455), 142 states have return successors, (518), 433 states have call predecessors, (518), 450 states have call successors, (518) [2024-12-02 12:51:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 4535 transitions. [2024-12-02 12:51:59,327 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 4535 transitions. Word has length 160 [2024-12-02 12:51:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:51:59,328 INFO L471 AbstractCegarLoop]: Abstraction has 2782 states and 4535 transitions. [2024-12-02 12:51:59,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:51:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 4535 transitions. [2024-12-02 12:51:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 12:51:59,331 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:51:59,331 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:51:59,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 12:51:59,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 12:51:59,532 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:51:59,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:51:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash -86014576, now seen corresponding path program 1 times [2024-12-02 12:51:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:51:59,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068267223] [2024-12-02 12:51:59,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:59,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:51:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:51:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 12:51:59,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:51:59,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068267223] [2024-12-02 12:51:59,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068267223] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:51:59,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855763556] [2024-12-02 12:51:59,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:51:59,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:51:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:51:59,646 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:51:59,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 12:52:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:00,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:52:00,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:52:00,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855763556] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:00,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 12:52:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634140344] [2024-12-02 12:52:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:00,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:52:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:00,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:52:00,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:52:00,233 INFO L87 Difference]: Start difference. First operand 2782 states and 4535 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 12:52:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:00,843 INFO L93 Difference]: Finished difference Result 2894 states and 4722 transitions. [2024-12-02 12:52:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:52:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2024-12-02 12:52:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:00,859 INFO L225 Difference]: With dead ends: 2894 [2024-12-02 12:52:00,859 INFO L226 Difference]: Without dead ends: 2879 [2024-12-02 12:52:00,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:52:00,862 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 917 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:00,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 2440 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 12:52:00,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2024-12-02 12:52:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2788. [2024-12-02 12:52:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2190 states have (on average 1.6292237442922375) internal successors, (3568), 2242 states have internal predecessors, (3568), 455 states have call successors, (455), 123 states have call predecessors, (455), 142 states have return successors, (518), 433 states have call predecessors, (518), 450 states have call successors, (518) [2024-12-02 12:52:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 4541 transitions. [2024-12-02 12:52:01,042 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 4541 transitions. Word has length 162 [2024-12-02 12:52:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:01,043 INFO L471 AbstractCegarLoop]: Abstraction has 2788 states and 4541 transitions. [2024-12-02 12:52:01,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 12:52:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 4541 transitions. [2024-12-02 12:52:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 12:52:01,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:01,049 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:01,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-12-02 12:52:01,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 12:52:01,249 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:01,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:01,250 INFO L85 PathProgramCache]: Analyzing trace with hash 939260203, now seen corresponding path program 1 times [2024-12-02 12:52:01,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:01,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335835996] [2024-12-02 12:52:01,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:01,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 12:52:01,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:01,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335835996] [2024-12-02 12:52:01,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335835996] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:01,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253899678] [2024-12-02 12:52:01,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:01,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:01,374 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:01,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 12:52:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:01,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 2123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:52:01,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:52:01,916 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:01,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253899678] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:01,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:01,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-12-02 12:52:01,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058703853] [2024-12-02 12:52:01,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:01,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:52:01,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:01,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:52:01,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:52:01,918 INFO L87 Difference]: Start difference. First operand 2788 states and 4541 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:52:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:02,391 INFO L93 Difference]: Finished difference Result 2988 states and 4827 transitions. [2024-12-02 12:52:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:52:02,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2024-12-02 12:52:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:02,407 INFO L225 Difference]: With dead ends: 2988 [2024-12-02 12:52:02,407 INFO L226 Difference]: Without dead ends: 2973 [2024-12-02 12:52:02,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:52:02,410 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 890 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:02,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 3759 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:52:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2024-12-02 12:52:02,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2952. [2024-12-02 12:52:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2322 states have (on average 1.623600344530577) internal successors, (3770), 2374 states have internal predecessors, (3770), 471 states have call successors, (471), 141 states have call predecessors, (471), 158 states have return successors, (537), 447 states have call predecessors, (537), 466 states have call successors, (537) [2024-12-02 12:52:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 4778 transitions. [2024-12-02 12:52:02,591 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 4778 transitions. Word has length 168 [2024-12-02 12:52:02,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:02,592 INFO L471 AbstractCegarLoop]: Abstraction has 2952 states and 4778 transitions. [2024-12-02 12:52:02,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 12:52:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 4778 transitions. [2024-12-02 12:52:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 12:52:02,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:02,598 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:52:02,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 12:52:02,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 12:52:02,799 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:02,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1075664391, now seen corresponding path program 1 times [2024-12-02 12:52:02,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:02,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750884379] [2024-12-02 12:52:02,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:02,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:52:02,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:02,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750884379] [2024-12-02 12:52:02,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750884379] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:02,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41035633] [2024-12-02 12:52:02,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:02,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:02,925 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:02,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 12:52:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:03,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 2160 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:52:03,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 12:52:03,377 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:03,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41035633] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:03,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:03,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 12:52:03,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471163023] [2024-12-02 12:52:03,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:03,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:52:03,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:03,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:52:03,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:52:03,379 INFO L87 Difference]: Start difference. First operand 2952 states and 4778 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 12:52:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:03,543 INFO L93 Difference]: Finished difference Result 5878 states and 9526 transitions. [2024-12-02 12:52:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:52:03,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 179 [2024-12-02 12:52:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:03,565 INFO L225 Difference]: With dead ends: 5878 [2024-12-02 12:52:03,565 INFO L226 Difference]: Without dead ends: 2921 [2024-12-02 12:52:03,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 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 12:52:03,576 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 7 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:03,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2855 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:52:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2024-12-02 12:52:03,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2921. [2024-12-02 12:52:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2294 states have (on average 1.6233653007846556) internal successors, (3724), 2344 states have internal predecessors, (3724), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2024-12-02 12:52:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4728 transitions. [2024-12-02 12:52:03,731 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4728 transitions. Word has length 179 [2024-12-02 12:52:03,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:03,731 INFO L471 AbstractCegarLoop]: Abstraction has 2921 states and 4728 transitions. [2024-12-02 12:52:03,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 12:52:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4728 transitions. [2024-12-02 12:52:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 12:52:03,737 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:03,737 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:03,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 12:52:03,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 12:52:03,938 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:03,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -160363004, now seen corresponding path program 1 times [2024-12-02 12:52:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460859822] [2024-12-02 12:52:03,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:03,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 12:52:04,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:04,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460859822] [2024-12-02 12:52:04,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460859822] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:04,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029162142] [2024-12-02 12:52:04,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:04,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:04,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:04,102 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:04,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 12:52:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:04,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 2163 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 12:52:04,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 12:52:04,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:04,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029162142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:04,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:04,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-12-02 12:52:04,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705826530] [2024-12-02 12:52:04,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:04,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:52:04,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:04,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:52:04,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:52:04,619 INFO L87 Difference]: Start difference. First operand 2921 states and 4728 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 12:52:04,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:04,859 INFO L93 Difference]: Finished difference Result 5811 states and 9420 transitions. [2024-12-02 12:52:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:52:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2024-12-02 12:52:04,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:04,882 INFO L225 Difference]: With dead ends: 5811 [2024-12-02 12:52:04,882 INFO L226 Difference]: Without dead ends: 2921 [2024-12-02 12:52:04,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 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 12:52:04,894 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 119 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:04,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5706 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:52:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2024-12-02 12:52:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2900. [2024-12-02 12:52:05,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2273 states have (on average 1.6234051913770347) internal successors, (3690), 2323 states have internal predecessors, (3690), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2024-12-02 12:52:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 4694 transitions. [2024-12-02 12:52:05,031 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 4694 transitions. Word has length 181 [2024-12-02 12:52:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:05,031 INFO L471 AbstractCegarLoop]: Abstraction has 2900 states and 4694 transitions. [2024-12-02 12:52:05,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 12:52:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 4694 transitions. [2024-12-02 12:52:05,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 12:52:05,036 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:05,036 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:05,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 12:52:05,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 12:52:05,237 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:05,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:05,238 INFO L85 PathProgramCache]: Analyzing trace with hash -544600865, now seen corresponding path program 1 times [2024-12-02 12:52:05,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:05,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043213214] [2024-12-02 12:52:05,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:05,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 12:52:05,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:05,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043213214] [2024-12-02 12:52:05,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043213214] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:05,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166506002] [2024-12-02 12:52:05,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:05,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:05,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:05,407 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:05,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 12:52:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:05,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 2169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:52:05,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 12:52:05,903 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:05,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166506002] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:05,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:05,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 12:52:05,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015994528] [2024-12-02 12:52:05,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:05,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:52:05,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:05,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:52:05,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:52:05,905 INFO L87 Difference]: Start difference. First operand 2900 states and 4694 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 12:52:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:06,085 INFO L93 Difference]: Finished difference Result 5793 states and 9390 transitions. [2024-12-02 12:52:06,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:52:06,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 183 [2024-12-02 12:52:06,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:06,102 INFO L225 Difference]: With dead ends: 5793 [2024-12-02 12:52:06,102 INFO L226 Difference]: Without dead ends: 2924 [2024-12-02 12:52:06,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:52:06,111 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 128 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:06,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2734 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:52:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2024-12-02 12:52:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2900. [2024-12-02 12:52:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2273 states have (on average 1.6229652441706994) internal successors, (3689), 2323 states have internal predecessors, (3689), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2024-12-02 12:52:06,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 4693 transitions. [2024-12-02 12:52:06,249 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 4693 transitions. Word has length 183 [2024-12-02 12:52:06,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:06,249 INFO L471 AbstractCegarLoop]: Abstraction has 2900 states and 4693 transitions. [2024-12-02 12:52:06,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 12:52:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 4693 transitions. [2024-12-02 12:52:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 12:52:06,252 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:06,253 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:06,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 12:52:06,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 12:52:06,453 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:06,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2106209237, now seen corresponding path program 1 times [2024-12-02 12:52:06,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:06,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732162806] [2024-12-02 12:52:06,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:06,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 12:52:06,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:06,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732162806] [2024-12-02 12:52:06,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732162806] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:06,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:06,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:52:06,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820431043] [2024-12-02 12:52:06,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:06,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:52:06,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:06,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:52:06,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:52:06,622 INFO L87 Difference]: Start difference. First operand 2900 states and 4693 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 12:52:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:06,799 INFO L93 Difference]: Finished difference Result 5728 states and 9299 transitions. [2024-12-02 12:52:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:52:06,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 184 [2024-12-02 12:52:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:06,822 INFO L225 Difference]: With dead ends: 5728 [2024-12-02 12:52:06,822 INFO L226 Difference]: Without dead ends: 2860 [2024-12-02 12:52:06,834 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 12:52:06,835 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 8 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:06,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2852 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:52:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2024-12-02 12:52:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2860. [2024-12-02 12:52:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2236 states have (on average 1.6216457960644006) internal successors, (3626), 2284 states have internal predecessors, (3626), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2024-12-02 12:52:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4626 transitions. [2024-12-02 12:52:07,099 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4626 transitions. Word has length 184 [2024-12-02 12:52:07,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:07,099 INFO L471 AbstractCegarLoop]: Abstraction has 2860 states and 4626 transitions. [2024-12-02 12:52:07,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 12:52:07,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4626 transitions. [2024-12-02 12:52:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 12:52:07,107 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:07,107 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:52:07,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 12:52:07,107 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:07,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1506068324, now seen corresponding path program 1 times [2024-12-02 12:52:07,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:07,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264112834] [2024-12-02 12:52:07,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:07,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 12:52:07,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:07,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264112834] [2024-12-02 12:52:07,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264112834] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:07,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:07,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:52:07,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396183757] [2024-12-02 12:52:07,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:07,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:52:07,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:07,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:52:07,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:52:07,425 INFO L87 Difference]: Start difference. First operand 2860 states and 4626 transitions. Second operand has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 12:52:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:07,592 INFO L93 Difference]: Finished difference Result 5631 states and 9138 transitions. [2024-12-02 12:52:07,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:52:07,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 185 [2024-12-02 12:52:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:07,609 INFO L225 Difference]: With dead ends: 5631 [2024-12-02 12:52:07,609 INFO L226 Difference]: Without dead ends: 2846 [2024-12-02 12:52:07,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:52:07,618 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 88 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:07,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5532 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:52:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2024-12-02 12:52:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2846. [2024-12-02 12:52:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2222 states have (on average 1.6206120612061206) internal successors, (3601), 2270 states have internal predecessors, (3601), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2024-12-02 12:52:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4601 transitions. [2024-12-02 12:52:07,736 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4601 transitions. Word has length 185 [2024-12-02 12:52:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:07,737 INFO L471 AbstractCegarLoop]: Abstraction has 2846 states and 4601 transitions. [2024-12-02 12:52:07,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 12:52:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4601 transitions. [2024-12-02 12:52:07,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 12:52:07,741 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:07,741 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:52:07,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 12:52:07,741 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:07,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:07,742 INFO L85 PathProgramCache]: Analyzing trace with hash -456238195, now seen corresponding path program 1 times [2024-12-02 12:52:07,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:07,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422942723] [2024-12-02 12:52:07,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:07,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 12:52:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:08,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422942723] [2024-12-02 12:52:08,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422942723] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:08,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:08,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 12:52:08,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53604015] [2024-12-02 12:52:08,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:08,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:52:08,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:08,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:52:08,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:52:08,014 INFO L87 Difference]: Start difference. First operand 2846 states and 4601 transitions. Second operand has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 12:52:08,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:08,202 INFO L93 Difference]: Finished difference Result 5658 states and 9166 transitions. [2024-12-02 12:52:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:52:08,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2024-12-02 12:52:08,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:08,212 INFO L225 Difference]: With dead ends: 5658 [2024-12-02 12:52:08,212 INFO L226 Difference]: Without dead ends: 2837 [2024-12-02 12:52:08,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:52:08,217 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 45 mSDsluCounter, 6222 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7117 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:08,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7117 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:52:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2024-12-02 12:52:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2837. [2024-12-02 12:52:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2837 states, 2213 states have (on average 1.6204247627654766) internal successors, (3586), 2261 states have internal predecessors, (3586), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2024-12-02 12:52:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 4586 transitions. [2024-12-02 12:52:08,296 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 4586 transitions. Word has length 186 [2024-12-02 12:52:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:08,296 INFO L471 AbstractCegarLoop]: Abstraction has 2837 states and 4586 transitions. [2024-12-02 12:52:08,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 12:52:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 4586 transitions. [2024-12-02 12:52:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 12:52:08,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:08,299 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:08,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 12:52:08,299 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:08,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -307701283, now seen corresponding path program 1 times [2024-12-02 12:52:08,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:08,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101055811] [2024-12-02 12:52:08,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:08,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:52:08,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:08,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101055811] [2024-12-02 12:52:08,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101055811] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:08,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874639157] [2024-12-02 12:52:08,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:08,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:08,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:08,739 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:08,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 12:52:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:09,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 12:52:09,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 12:52:09,297 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:09,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874639157] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:09,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:09,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-12-02 12:52:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152028685] [2024-12-02 12:52:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:09,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:52:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:09,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:52:09,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:52:09,298 INFO L87 Difference]: Start difference. First operand 2837 states and 4586 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 12:52:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:10,692 INFO L93 Difference]: Finished difference Result 5636 states and 9159 transitions. [2024-12-02 12:52:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:52:10,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 187 [2024-12-02 12:52:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:10,703 INFO L225 Difference]: With dead ends: 5636 [2024-12-02 12:52:10,703 INFO L226 Difference]: Without dead ends: 2897 [2024-12-02 12:52:10,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:52:10,709 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 1841 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:10,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 1232 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 12:52:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2024-12-02 12:52:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2725. [2024-12-02 12:52:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2085 states have (on average 1.6062350119904076) internal successors, (3349), 2147 states have internal predecessors, (3349), 495 states have call successors, (495), 131 states have call predecessors, (495), 144 states have return successors, (544), 468 states have call predecessors, (544), 490 states have call successors, (544) [2024-12-02 12:52:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4388 transitions. [2024-12-02 12:52:10,817 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4388 transitions. Word has length 187 [2024-12-02 12:52:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:10,818 INFO L471 AbstractCegarLoop]: Abstraction has 2725 states and 4388 transitions. [2024-12-02 12:52:10,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-12-02 12:52:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4388 transitions. [2024-12-02 12:52:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 12:52:10,820 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:10,820 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:10,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 12:52:11,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 12:52:11,020 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:11,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:11,021 INFO L85 PathProgramCache]: Analyzing trace with hash -334766885, now seen corresponding path program 1 times [2024-12-02 12:52:11,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:11,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122258647] [2024-12-02 12:52:11,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:11,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:52:11,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:11,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122258647] [2024-12-02 12:52:11,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122258647] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:11,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253649026] [2024-12-02 12:52:11,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:11,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:11,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:11,328 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:11,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 12:52:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:11,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 12:52:11,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:52:11,796 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:11,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253649026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:11,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:11,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-12-02 12:52:11,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403474125] [2024-12-02 12:52:11,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:11,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:52:11,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:11,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:52:11,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:52:11,798 INFO L87 Difference]: Start difference. First operand 2725 states and 4388 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 12:52:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:14,108 INFO L93 Difference]: Finished difference Result 8802 states and 14439 transitions. [2024-12-02 12:52:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:52:14,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 187 [2024-12-02 12:52:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:14,131 INFO L225 Difference]: With dead ends: 8802 [2024-12-02 12:52:14,131 INFO L226 Difference]: Without dead ends: 6175 [2024-12-02 12:52:14,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-12-02 12:52:14,139 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 2191 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 4145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:14,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 2107 Invalid, 4145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 12:52:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2024-12-02 12:52:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 5733. [2024-12-02 12:52:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5733 states, 4373 states have (on average 1.607134690144066) internal successors, (7028), 4506 states have internal predecessors, (7028), 1037 states have call successors, (1037), 263 states have call predecessors, (1037), 322 states have return successors, (1281), 1007 states have call predecessors, (1281), 1032 states have call successors, (1281) [2024-12-02 12:52:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5733 states to 5733 states and 9346 transitions. [2024-12-02 12:52:14,380 INFO L78 Accepts]: Start accepts. Automaton has 5733 states and 9346 transitions. Word has length 187 [2024-12-02 12:52:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:14,381 INFO L471 AbstractCegarLoop]: Abstraction has 5733 states and 9346 transitions. [2024-12-02 12:52:14,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 12:52:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5733 states and 9346 transitions. [2024-12-02 12:52:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 12:52:14,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:14,383 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:14,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 12:52:14,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 12:52:14,583 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:14,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:14,584 INFO L85 PathProgramCache]: Analyzing trace with hash -892438491, now seen corresponding path program 1 times [2024-12-02 12:52:14,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:14,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382305436] [2024-12-02 12:52:14,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:14,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:52:14,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:14,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382305436] [2024-12-02 12:52:14,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382305436] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:14,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804429513] [2024-12-02 12:52:14,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:14,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:14,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:14,881 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:14,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 12:52:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:15,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 12:52:15,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:52:15,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:15,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804429513] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:15,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:15,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 12:52:15,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412440498] [2024-12-02 12:52:15,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:15,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:52:15,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:15,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:52:15,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:52:15,370 INFO L87 Difference]: Start difference. First operand 5733 states and 9346 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 12:52:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:17,273 INFO L93 Difference]: Finished difference Result 17524 states and 28890 transitions. [2024-12-02 12:52:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:52:17,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2024-12-02 12:52:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:17,308 INFO L225 Difference]: With dead ends: 17524 [2024-12-02 12:52:17,308 INFO L226 Difference]: Without dead ends: 11883 [2024-12-02 12:52:17,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:52:17,324 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 2071 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:17,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2166 Valid, 340 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 12:52:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11883 states. [2024-12-02 12:52:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11883 to 11881. [2024-12-02 12:52:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11881 states, 9064 states have (on average 1.5964254192409533) internal successors, (14470), 9363 states have internal predecessors, (14470), 2135 states have call successors, (2135), 519 states have call predecessors, (2135), 681 states have return successors, (2852), 2086 states have call predecessors, (2852), 2130 states have call successors, (2852) [2024-12-02 12:52:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11881 states to 11881 states and 19457 transitions. [2024-12-02 12:52:17,861 INFO L78 Accepts]: Start accepts. Automaton has 11881 states and 19457 transitions. Word has length 192 [2024-12-02 12:52:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:17,861 INFO L471 AbstractCegarLoop]: Abstraction has 11881 states and 19457 transitions. [2024-12-02 12:52:17,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 12:52:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11881 states and 19457 transitions. [2024-12-02 12:52:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 12:52:17,865 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:17,865 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:17,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 12:52:18,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 12:52:18,065 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:18,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1943967335, now seen corresponding path program 1 times [2024-12-02 12:52:18,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366554891] [2024-12-02 12:52:18,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:18,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 12:52:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366554891] [2024-12-02 12:52:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366554891] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:18,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 12:52:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990050695] [2024-12-02 12:52:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:18,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:52:18,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:18,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:52:18,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:52:18,375 INFO L87 Difference]: Start difference. First operand 11881 states and 19457 transitions. Second operand has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 12:52:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:18,830 INFO L93 Difference]: Finished difference Result 17401 states and 28448 transitions. [2024-12-02 12:52:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:52:18,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2024-12-02 12:52:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:18,854 INFO L225 Difference]: With dead ends: 17401 [2024-12-02 12:52:18,854 INFO L226 Difference]: Without dead ends: 5606 [2024-12-02 12:52:18,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:52:18,880 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 31 mSDsluCounter, 7120 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 8016 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:18,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 8016 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:52:18,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2024-12-02 12:52:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5606. [2024-12-02 12:52:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 4287 states have (on average 1.6001866106834617) internal successors, (6860), 4419 states have internal predecessors, (6860), 996 states have call successors, (996), 263 states have call predecessors, (996), 322 states have return successors, (1241), 967 states have call predecessors, (1241), 992 states have call successors, (1241) [2024-12-02 12:52:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 9097 transitions. [2024-12-02 12:52:19,136 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 9097 transitions. Word has length 192 [2024-12-02 12:52:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:19,136 INFO L471 AbstractCegarLoop]: Abstraction has 5606 states and 9097 transitions. [2024-12-02 12:52:19,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 12:52:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 9097 transitions. [2024-12-02 12:52:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 12:52:19,138 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:19,138 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:19,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 12:52:19,139 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:19,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:19,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1896044805, now seen corresponding path program 1 times [2024-12-02 12:52:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:19,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294213480] [2024-12-02 12:52:19,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 12:52:19,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:19,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294213480] [2024-12-02 12:52:19,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294213480] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:19,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493362838] [2024-12-02 12:52:19,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:19,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:19,474 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:19,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 12:52:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:19,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 2195 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:52:19,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 12:52:19,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493362838] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:19,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:19,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-12-02 12:52:19,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080070777] [2024-12-02 12:52:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:19,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:52:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:19,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:52:19,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:52:19,889 INFO L87 Difference]: Start difference. First operand 5606 states and 9097 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 12:52:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:20,088 INFO L93 Difference]: Finished difference Result 5668 states and 9177 transitions. [2024-12-02 12:52:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:52:20,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 193 [2024-12-02 12:52:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:20,110 INFO L225 Difference]: With dead ends: 5668 [2024-12-02 12:52:20,110 INFO L226 Difference]: Without dead ends: 5654 [2024-12-02 12:52:20,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:52:20,114 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 0 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:20,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3621 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:52:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2024-12-02 12:52:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5654. [2024-12-02 12:52:20,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 4335 states have (on average 1.5935409457900807) internal successors, (6908), 4467 states have internal predecessors, (6908), 996 states have call successors, (996), 263 states have call predecessors, (996), 322 states have return successors, (1241), 967 states have call predecessors, (1241), 992 states have call successors, (1241) [2024-12-02 12:52:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 9145 transitions. [2024-12-02 12:52:20,373 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 9145 transitions. Word has length 193 [2024-12-02 12:52:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:20,373 INFO L471 AbstractCegarLoop]: Abstraction has 5654 states and 9145 transitions. [2024-12-02 12:52:20,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-12-02 12:52:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 9145 transitions. [2024-12-02 12:52:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-12-02 12:52:20,378 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:20,379 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:20,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 12:52:20,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:20,579 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:20,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1436889270, now seen corresponding path program 1 times [2024-12-02 12:52:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:20,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76521918] [2024-12-02 12:52:20,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:20,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-12-02 12:52:20,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76521918] [2024-12-02 12:52:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76521918] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042367681] [2024-12-02 12:52:20,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:20,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:20,910 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:20,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 12:52:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:21,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 12:52:21,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 12:52:21,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:52:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-12-02 12:52:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042367681] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:52:22,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:52:22,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2024-12-02 12:52:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267379495] [2024-12-02 12:52:22,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:52:22,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 12:52:22,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:22,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 12:52:22,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:52:22,347 INFO L87 Difference]: Start difference. First operand 5654 states and 9145 transitions. Second operand has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) [2024-12-02 12:52:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:42,866 INFO L93 Difference]: Finished difference Result 52335 states and 88870 transitions. [2024-12-02 12:52:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-12-02 12:52:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) Word has length 236 [2024-12-02 12:52:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:43,014 INFO L225 Difference]: With dead ends: 52335 [2024-12-02 12:52:43,014 INFO L226 Difference]: Without dead ends: 46767 [2024-12-02 12:52:43,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 481 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2636 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1060, Invalid=8060, Unknown=0, NotChecked=0, Total=9120 [2024-12-02 12:52:43,057 INFO L435 NwaCegarLoop]: 1838 mSDtfsCounter, 16071 mSDsluCounter, 16384 mSDsCounter, 0 mSdLazyCounter, 33032 mSolverCounterSat, 7101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16071 SdHoareTripleChecker+Valid, 18222 SdHoareTripleChecker+Invalid, 40133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7101 IncrementalHoareTripleChecker+Valid, 33032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:43,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16071 Valid, 18222 Invalid, 40133 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7101 Valid, 33032 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2024-12-02 12:52:43,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46767 states. [2024-12-02 12:52:45,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46767 to 44058. [2024-12-02 12:52:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44058 states, 33055 states have (on average 1.5698986537588866) internal successors, (51893), 34231 states have internal predecessors, (51893), 8436 states have call successors, (8436), 1547 states have call predecessors, (8436), 2566 states have return successors, (13508), 8715 states have call predecessors, (13508), 8432 states have call successors, (13508) [2024-12-02 12:52:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44058 states to 44058 states and 73837 transitions. [2024-12-02 12:52:45,542 INFO L78 Accepts]: Start accepts. Automaton has 44058 states and 73837 transitions. Word has length 236 [2024-12-02 12:52:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:45,543 INFO L471 AbstractCegarLoop]: Abstraction has 44058 states and 73837 transitions. [2024-12-02 12:52:45,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) [2024-12-02 12:52:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 44058 states and 73837 transitions. [2024-12-02 12:52:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-12-02 12:52:45,571 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:45,571 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:45,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 12:52:45,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 12:52:45,771 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:45,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1332411989, now seen corresponding path program 1 times [2024-12-02 12:52:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051454721] [2024-12-02 12:52:45,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-12-02 12:52:45,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:45,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051454721] [2024-12-02 12:52:45,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051454721] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:45,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999517685] [2024-12-02 12:52:45,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:45,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:45,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:45,931 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:45,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 12:52:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:46,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:52:46,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-12-02 12:52:46,303 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999517685] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:46,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:46,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-12-02 12:52:46,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371841728] [2024-12-02 12:52:46,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:46,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:52:46,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:46,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:52:46,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:52:46,304 INFO L87 Difference]: Start difference. First operand 44058 states and 73837 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:52:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:49,537 INFO L93 Difference]: Finished difference Result 63298 states and 105690 transitions. [2024-12-02 12:52:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:52:49,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 239 [2024-12-02 12:52:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:49,702 INFO L225 Difference]: With dead ends: 63298 [2024-12-02 12:52:49,702 INFO L226 Difference]: Without dead ends: 44015 [2024-12-02 12:52:49,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:52:49,765 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 3 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:49,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2698 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:52:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44015 states. [2024-12-02 12:52:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44015 to 44015. [2024-12-02 12:52:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44015 states, 33020 states have (on average 1.5701090248334342) internal successors, (51845), 34195 states have internal predecessors, (51845), 8433 states have call successors, (8433), 1544 states have call predecessors, (8433), 2561 states have return successors, (13501), 8711 states have call predecessors, (13501), 8429 states have call successors, (13501) [2024-12-02 12:52:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44015 states to 44015 states and 73779 transitions. [2024-12-02 12:52:52,124 INFO L78 Accepts]: Start accepts. Automaton has 44015 states and 73779 transitions. Word has length 239 [2024-12-02 12:52:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:52,124 INFO L471 AbstractCegarLoop]: Abstraction has 44015 states and 73779 transitions. [2024-12-02 12:52:52,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-02 12:52:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 44015 states and 73779 transitions. [2024-12-02 12:52:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-12-02 12:52:52,161 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:52,161 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:52,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 12:52:52,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 12:52:52,362 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:52,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash -837189852, now seen corresponding path program 1 times [2024-12-02 12:52:52,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965969696] [2024-12-02 12:52:52,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:52,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-12-02 12:52:52,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965969696] [2024-12-02 12:52:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965969696] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:52,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:52:52,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:52:52,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915238271] [2024-12-02 12:52:52,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:52,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:52:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:52,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:52:52,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:52:52,643 INFO L87 Difference]: Start difference. First operand 44015 states and 73779 transitions. Second operand has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:52:53,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:53,508 INFO L93 Difference]: Finished difference Result 56623 states and 94387 transitions. [2024-12-02 12:52:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:52:53,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 239 [2024-12-02 12:52:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:53,575 INFO L225 Difference]: With dead ends: 56623 [2024-12-02 12:52:53,575 INFO L226 Difference]: Without dead ends: 12720 [2024-12-02 12:52:53,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:52:53,696 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 41 mSDsluCounter, 5276 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6164 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:53,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6164 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:52:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12720 states. [2024-12-02 12:52:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12720 to 12720. [2024-12-02 12:52:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12720 states, 9659 states have (on average 1.5780101459778444) internal successors, (15242), 10015 states have internal predecessors, (15242), 2289 states have call successors, (2289), 522 states have call predecessors, (2289), 771 states have return successors, (3205), 2290 states have call predecessors, (3205), 2285 states have call successors, (3205) [2024-12-02 12:52:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12720 states to 12720 states and 20736 transitions. [2024-12-02 12:52:54,526 INFO L78 Accepts]: Start accepts. Automaton has 12720 states and 20736 transitions. Word has length 239 [2024-12-02 12:52:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:54,526 INFO L471 AbstractCegarLoop]: Abstraction has 12720 states and 20736 transitions. [2024-12-02 12:52:54,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 12:52:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 12720 states and 20736 transitions. [2024-12-02 12:52:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-12-02 12:52:54,536 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:54,536 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:54,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 12:52:54,536 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:54,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:54,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1548584455, now seen corresponding path program 1 times [2024-12-02 12:52:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:54,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3666153] [2024-12-02 12:52:54,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-12-02 12:52:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:55,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3666153] [2024-12-02 12:52:55,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3666153] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:55,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575416962] [2024-12-02 12:52:55,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:55,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:55,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:55,095 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:55,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 12:52:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:55,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:52:55,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-12-02 12:52:55,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575416962] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:55,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-12-02 12:52:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656776319] [2024-12-02 12:52:55,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:55,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:52:55,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:55,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:52:55,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:52:55,610 INFO L87 Difference]: Start difference. First operand 12720 states and 20736 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:52:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:56,687 INFO L93 Difference]: Finished difference Result 25414 states and 41636 transitions. [2024-12-02 12:52:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:52:56,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 245 [2024-12-02 12:52:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:56,750 INFO L225 Difference]: With dead ends: 25414 [2024-12-02 12:52:56,750 INFO L226 Difference]: Without dead ends: 12840 [2024-12-02 12:52:56,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:52:56,788 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 0 mSDsluCounter, 4493 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5395 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:56,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5395 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:52:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12840 states. [2024-12-02 12:52:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12840 to 12840. [2024-12-02 12:52:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12840 states, 9759 states have (on average 1.572087304027052) internal successors, (15342), 10115 states have internal predecessors, (15342), 2289 states have call successors, (2289), 522 states have call predecessors, (2289), 791 states have return successors, (3225), 2310 states have call predecessors, (3225), 2285 states have call successors, (3225) [2024-12-02 12:52:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12840 states to 12840 states and 20856 transitions. [2024-12-02 12:52:57,686 INFO L78 Accepts]: Start accepts. Automaton has 12840 states and 20856 transitions. Word has length 245 [2024-12-02 12:52:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:52:57,686 INFO L471 AbstractCegarLoop]: Abstraction has 12840 states and 20856 transitions. [2024-12-02 12:52:57,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:52:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 12840 states and 20856 transitions. [2024-12-02 12:52:57,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-12-02 12:52:57,692 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:52:57,692 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:52:57,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 12:52:57,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 12:52:57,893 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:52:57,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:52:57,893 INFO L85 PathProgramCache]: Analyzing trace with hash -695049581, now seen corresponding path program 1 times [2024-12-02 12:52:57,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:52:57,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42770881] [2024-12-02 12:52:57,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:52:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-12-02 12:52:58,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:52:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42770881] [2024-12-02 12:52:58,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42770881] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:52:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028459147] [2024-12-02 12:52:58,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:52:58,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:52:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:52:58,241 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:52:58,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 12:52:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:52:58,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:52:58,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:52:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 12:52:58,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:52:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028459147] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:52:58,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:52:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-12-02 12:52:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110557972] [2024-12-02 12:52:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:52:58,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:52:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:52:58,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:52:58,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:52:58,665 INFO L87 Difference]: Start difference. First operand 12840 states and 20856 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:52:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:52:59,409 INFO L93 Difference]: Finished difference Result 25914 states and 42400 transitions. [2024-12-02 12:52:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:52:59,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 248 [2024-12-02 12:52:59,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:52:59,468 INFO L225 Difference]: With dead ends: 25914 [2024-12-02 12:52:59,468 INFO L226 Difference]: Without dead ends: 13000 [2024-12-02 12:52:59,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:52:59,505 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 10 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:52:59,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2609 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:52:59,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13000 states. [2024-12-02 12:53:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13000 to 13000. [2024-12-02 12:53:00,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13000 states, 9899 states have (on average 1.5353065966259218) internal successors, (15198), 10255 states have internal predecessors, (15198), 2289 states have call successors, (2289), 542 states have call predecessors, (2289), 811 states have return successors, (3265), 2310 states have call predecessors, (3265), 2285 states have call successors, (3265) [2024-12-02 12:53:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13000 states to 13000 states and 20752 transitions. [2024-12-02 12:53:00,145 INFO L78 Accepts]: Start accepts. Automaton has 13000 states and 20752 transitions. Word has length 248 [2024-12-02 12:53:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:00,146 INFO L471 AbstractCegarLoop]: Abstraction has 13000 states and 20752 transitions. [2024-12-02 12:53:00,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:53:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 13000 states and 20752 transitions. [2024-12-02 12:53:00,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-12-02 12:53:00,152 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:00,152 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:53:00,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-02 12:53:00,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-12-02 12:53:00,352 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:00,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1038429796, now seen corresponding path program 1 times [2024-12-02 12:53:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:00,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892442722] [2024-12-02 12:53:00,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 2 proven. 67 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2024-12-02 12:53:00,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:00,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892442722] [2024-12-02 12:53:00,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892442722] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:00,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024483487] [2024-12-02 12:53:00,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:00,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:00,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:00,909 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:00,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 12:53:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:01,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:53:01,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-12-02 12:53:01,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:53:01,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024483487] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:01,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:53:01,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 12:53:01,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621193740] [2024-12-02 12:53:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:01,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:01,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:01,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:01,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:53:01,391 INFO L87 Difference]: Start difference. First operand 13000 states and 20752 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-12-02 12:53:02,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:02,168 INFO L93 Difference]: Finished difference Result 26400 states and 42812 transitions. [2024-12-02 12:53:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:53:02,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 349 [2024-12-02 12:53:02,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:02,228 INFO L225 Difference]: With dead ends: 26400 [2024-12-02 12:53:02,228 INFO L226 Difference]: Without dead ends: 13540 [2024-12-02 12:53:02,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:53:02,264 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 144 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:02,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2497 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:53:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13540 states. [2024-12-02 12:53:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13540 to 13468. [2024-12-02 12:53:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13468 states, 10355 states have (on average 1.5522935779816514) internal successors, (16074), 10711 states have internal predecessors, (16074), 2289 states have call successors, (2289), 554 states have call predecessors, (2289), 823 states have return successors, (3265), 2310 states have call predecessors, (3265), 2285 states have call successors, (3265) [2024-12-02 12:53:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13468 states to 13468 states and 21628 transitions. [2024-12-02 12:53:02,909 INFO L78 Accepts]: Start accepts. Automaton has 13468 states and 21628 transitions. Word has length 349 [2024-12-02 12:53:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:02,909 INFO L471 AbstractCegarLoop]: Abstraction has 13468 states and 21628 transitions. [2024-12-02 12:53:02,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-12-02 12:53:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 13468 states and 21628 transitions. [2024-12-02 12:53:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-12-02 12:53:02,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:02,916 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:02,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-02 12:53:03,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-12-02 12:53:03,116 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:03,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1512097185, now seen corresponding path program 1 times [2024-12-02 12:53:03,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:03,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787044353] [2024-12-02 12:53:03,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:03,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-12-02 12:53:03,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:03,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787044353] [2024-12-02 12:53:03,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787044353] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:03,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631130902] [2024-12-02 12:53:03,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:03,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:03,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:03,270 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:03,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-02 12:53:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:03,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 2336 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 12:53:03,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-12-02 12:53:03,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:53:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 12:53:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631130902] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:53:04,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:53:04,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2024-12-02 12:53:04,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719089855] [2024-12-02 12:53:04,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:53:04,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:53:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:04,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:53:04,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:53:04,341 INFO L87 Difference]: Start difference. First operand 13468 states and 21628 transitions. Second operand has 20 states, 19 states have (on average 14.894736842105264) internal successors, (283), 17 states have internal predecessors, (283), 8 states have call successors, (60), 5 states have call predecessors, (60), 12 states have return successors, (62), 10 states have call predecessors, (62), 8 states have call successors, (62) [2024-12-02 12:53:11,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:11,087 INFO L93 Difference]: Finished difference Result 41421 states and 66768 transitions. [2024-12-02 12:53:11,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 12:53:11,088 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 14.894736842105264) internal successors, (283), 17 states have internal predecessors, (283), 8 states have call successors, (60), 5 states have call predecessors, (60), 12 states have return successors, (62), 10 states have call predecessors, (62), 8 states have call successors, (62) Word has length 250 [2024-12-02 12:53:11,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:11,283 INFO L225 Difference]: With dead ends: 41421 [2024-12-02 12:53:11,283 INFO L226 Difference]: Without dead ends: 28052 [2024-12-02 12:53:11,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 492 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 12:53:11,353 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 2088 mSDsluCounter, 8353 mSDsCounter, 0 mSdLazyCounter, 13826 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 9187 SdHoareTripleChecker+Invalid, 14302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 13826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:11,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2204 Valid, 9187 Invalid, 14302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [476 Valid, 13826 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 12:53:11,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28052 states. [2024-12-02 12:53:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28052 to 27730. [2024-12-02 12:53:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27730 states, 21054 states have (on average 1.5570912890662107) internal successors, (32783), 21837 states have internal predecessors, (32783), 4922 states have call successors, (4922), 1092 states have call predecessors, (4922), 1753 states have return successors, (7072), 5072 states have call predecessors, (7072), 4918 states have call successors, (7072) [2024-12-02 12:53:12,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27730 states to 27730 states and 44777 transitions. [2024-12-02 12:53:12,895 INFO L78 Accepts]: Start accepts. Automaton has 27730 states and 44777 transitions. Word has length 250 [2024-12-02 12:53:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:12,895 INFO L471 AbstractCegarLoop]: Abstraction has 27730 states and 44777 transitions. [2024-12-02 12:53:12,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 14.894736842105264) internal successors, (283), 17 states have internal predecessors, (283), 8 states have call successors, (60), 5 states have call predecessors, (60), 12 states have return successors, (62), 10 states have call predecessors, (62), 8 states have call successors, (62) [2024-12-02 12:53:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 27730 states and 44777 transitions. [2024-12-02 12:53:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-12-02 12:53:12,901 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:12,901 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:12,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-12-02 12:53:13,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-12-02 12:53:13,102 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:13,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:13,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1299639469, now seen corresponding path program 1 times [2024-12-02 12:53:13,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764223741] [2024-12-02 12:53:13,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-12-02 12:53:13,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:13,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764223741] [2024-12-02 12:53:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764223741] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:13,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195756043] [2024-12-02 12:53:13,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:13,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:13,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:13,459 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:13,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-12-02 12:53:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:13,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:53:13,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-12-02 12:53:13,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:53:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195756043] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:53:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-12-02 12:53:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838330865] [2024-12-02 12:53:13,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:13,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:13,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:13,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:53:13,834 INFO L87 Difference]: Start difference. First operand 27730 states and 44777 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:53:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:15,349 INFO L93 Difference]: Finished difference Result 55590 states and 90129 transitions. [2024-12-02 12:53:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:53:15,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 251 [2024-12-02 12:53:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:15,464 INFO L225 Difference]: With dead ends: 55590 [2024-12-02 12:53:15,464 INFO L226 Difference]: Without dead ends: 27730 [2024-12-02 12:53:15,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 12:53:15,535 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 8 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:15,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2609 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:53:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27730 states. [2024-12-02 12:53:16,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27730 to 27730. [2024-12-02 12:53:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27730 states, 21054 states have (on average 1.544932079414838) internal successors, (32527), 21837 states have internal predecessors, (32527), 4922 states have call successors, (4922), 1092 states have call predecessors, (4922), 1753 states have return successors, (7072), 5072 states have call predecessors, (7072), 4918 states have call successors, (7072) [2024-12-02 12:53:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27730 states to 27730 states and 44521 transitions. [2024-12-02 12:53:17,111 INFO L78 Accepts]: Start accepts. Automaton has 27730 states and 44521 transitions. Word has length 251 [2024-12-02 12:53:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:17,111 INFO L471 AbstractCegarLoop]: Abstraction has 27730 states and 44521 transitions. [2024-12-02 12:53:17,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:53:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 27730 states and 44521 transitions. [2024-12-02 12:53:17,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-12-02 12:53:17,117 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:17,117 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:17,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-12-02 12:53:17,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:17,317 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:17,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash -182424995, now seen corresponding path program 2 times [2024-12-02 12:53:17,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:17,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198141722] [2024-12-02 12:53:17,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:53:17,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:17,349 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:53:17,349 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:53:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-12-02 12:53:17,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198141722] [2024-12-02 12:53:17,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198141722] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19014096] [2024-12-02 12:53:17,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:53:17,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:17,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:17,549 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:17,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-12-02 12:53:17,932 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:53:17,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:53:17,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:53:17,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-12-02 12:53:17,962 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:53:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19014096] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:17,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:53:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-12-02 12:53:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262696759] [2024-12-02 12:53:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:17,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:17,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:17,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:53:17,964 INFO L87 Difference]: Start difference. First operand 27730 states and 44521 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:53:19,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:19,462 INFO L93 Difference]: Finished difference Result 54290 states and 87955 transitions. [2024-12-02 12:53:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:53:19,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 252 [2024-12-02 12:53:19,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:19,565 INFO L225 Difference]: With dead ends: 54290 [2024-12-02 12:53:19,565 INFO L226 Difference]: Without dead ends: 26342 [2024-12-02 12:53:19,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:53:19,626 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 8 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:19,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2586 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:53:19,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26342 states. [2024-12-02 12:53:20,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26342 to 26310. [2024-12-02 12:53:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26310 states, 19860 states have (on average 1.5517119838872104) internal successors, (30817), 20621 states have internal predecessors, (30817), 4826 states have call successors, (4826), 1032 states have call predecessors, (4826), 1623 states have return successors, (6796), 4928 states have call predecessors, (6796), 4822 states have call successors, (6796) [2024-12-02 12:53:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26310 states to 26310 states and 42439 transitions. [2024-12-02 12:53:20,996 INFO L78 Accepts]: Start accepts. Automaton has 26310 states and 42439 transitions. Word has length 252 [2024-12-02 12:53:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:20,997 INFO L471 AbstractCegarLoop]: Abstraction has 26310 states and 42439 transitions. [2024-12-02 12:53:20,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 12:53:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states and 42439 transitions. [2024-12-02 12:53:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-12-02 12:53:21,002 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:21,002 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:53:21,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-12-02 12:53:21,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:21,203 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:21,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1047735186, now seen corresponding path program 1 times [2024-12-02 12:53:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426694916] [2024-12-02 12:53:21,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 2 proven. 67 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2024-12-02 12:53:21,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:21,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426694916] [2024-12-02 12:53:21,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426694916] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:21,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459556977] [2024-12-02 12:53:21,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:21,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:21,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:21,733 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:21,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-12-02 12:53:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:22,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 3114 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:53:22,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-12-02 12:53:22,300 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:53:22,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459556977] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:22,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:53:22,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 12:53:22,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567111926] [2024-12-02 12:53:22,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:22,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:22,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:22,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:53:22,301 INFO L87 Difference]: Start difference. First operand 26310 states and 42439 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 12:53:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:23,978 INFO L93 Difference]: Finished difference Result 53685 states and 87891 transitions. [2024-12-02 12:53:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:53:23,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 359 [2024-12-02 12:53:23,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:24,109 INFO L225 Difference]: With dead ends: 53685 [2024-12-02 12:53:24,109 INFO L226 Difference]: Without dead ends: 27462 [2024-12-02 12:53:24,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:53:24,190 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 142 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:24,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2485 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:53:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27462 states. [2024-12-02 12:53:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27462 to 27246. [2024-12-02 12:53:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27246 states, 20772 states have (on average 1.5679279799730406) internal successors, (32569), 21533 states have internal predecessors, (32569), 4826 states have call successors, (4826), 1056 states have call predecessors, (4826), 1647 states have return successors, (6796), 4928 states have call predecessors, (6796), 4822 states have call successors, (6796) [2024-12-02 12:53:25,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27246 states to 27246 states and 44191 transitions. [2024-12-02 12:53:25,720 INFO L78 Accepts]: Start accepts. Automaton has 27246 states and 44191 transitions. Word has length 359 [2024-12-02 12:53:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:25,721 INFO L471 AbstractCegarLoop]: Abstraction has 27246 states and 44191 transitions. [2024-12-02 12:53:25,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-12-02 12:53:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 27246 states and 44191 transitions. [2024-12-02 12:53:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-12-02 12:53:25,726 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:25,727 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 8, 8, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:53:25,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-12-02 12:53:25,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-12-02 12:53:25,927 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:25,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:25,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1963729769, now seen corresponding path program 1 times [2024-12-02 12:53:25,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:25,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800571726] [2024-12-02 12:53:25,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:25,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 2 proven. 67 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-12-02 12:53:26,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:26,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800571726] [2024-12-02 12:53:26,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800571726] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:26,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267545762] [2024-12-02 12:53:26,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:26,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:26,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:26,313 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:26,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-12-02 12:53:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:26,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 3123 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:53:26,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-12-02 12:53:26,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:53:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267545762] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:26,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:53:26,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 12:53:26,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028688150] [2024-12-02 12:53:26,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:26,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:26,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:26,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:26,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:53:26,800 INFO L87 Difference]: Start difference. First operand 27246 states and 44191 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 12:53:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:28,601 INFO L93 Difference]: Finished difference Result 55629 states and 91367 transitions. [2024-12-02 12:53:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:53:28,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 368 [2024-12-02 12:53:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:28,756 INFO L225 Difference]: With dead ends: 55629 [2024-12-02 12:53:28,756 INFO L226 Difference]: Without dead ends: 28470 [2024-12-02 12:53:28,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:53:28,835 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 140 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:28,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2482 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:53:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28470 states. [2024-12-02 12:53:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28470 to 28182. [2024-12-02 12:53:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28182 states, 21684 states have (on average 1.582779929902232) internal successors, (34321), 22445 states have internal predecessors, (34321), 4826 states have call successors, (4826), 1080 states have call predecessors, (4826), 1671 states have return successors, (6796), 4928 states have call predecessors, (6796), 4822 states have call successors, (6796) [2024-12-02 12:53:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28182 states to 28182 states and 45943 transitions. [2024-12-02 12:53:30,349 INFO L78 Accepts]: Start accepts. Automaton has 28182 states and 45943 transitions. Word has length 368 [2024-12-02 12:53:30,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:30,349 INFO L471 AbstractCegarLoop]: Abstraction has 28182 states and 45943 transitions. [2024-12-02 12:53:30,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 12:53:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 28182 states and 45943 transitions. [2024-12-02 12:53:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-12-02 12:53:30,356 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:30,356 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 8, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:53:30,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-12-02 12:53:30,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 12:53:30,556 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:30,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:30,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1994277273, now seen corresponding path program 1 times [2024-12-02 12:53:30,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:30,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929686369] [2024-12-02 12:53:30,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 2 proven. 67 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-12-02 12:53:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929686369] [2024-12-02 12:53:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929686369] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939636547] [2024-12-02 12:53:31,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:31,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:31,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:31,048 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:31,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-12-02 12:53:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:31,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:53:31,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-12-02 12:53:31,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:53:31,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939636547] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:31,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:53:31,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 12:53:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572899960] [2024-12-02 12:53:31,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:31,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:31,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:31,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:31,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:53:31,560 INFO L87 Difference]: Start difference. First operand 28182 states and 45943 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 12:53:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:33,099 INFO L93 Difference]: Finished difference Result 57573 states and 94843 transitions. [2024-12-02 12:53:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:53:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 394 [2024-12-02 12:53:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:33,239 INFO L225 Difference]: With dead ends: 57573 [2024-12-02 12:53:33,239 INFO L226 Difference]: Without dead ends: 29478 [2024-12-02 12:53:33,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:53:33,320 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 138 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:33,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2472 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:53:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29478 states. [2024-12-02 12:53:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29478 to 29118. [2024-12-02 12:53:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29118 states, 22596 states have (on average 1.596432996990618) internal successors, (36073), 23357 states have internal predecessors, (36073), 4826 states have call successors, (4826), 1104 states have call predecessors, (4826), 1695 states have return successors, (6796), 4928 states have call predecessors, (6796), 4822 states have call successors, (6796) [2024-12-02 12:53:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29118 states to 29118 states and 47695 transitions. [2024-12-02 12:53:34,897 INFO L78 Accepts]: Start accepts. Automaton has 29118 states and 47695 transitions. Word has length 394 [2024-12-02 12:53:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:34,897 INFO L471 AbstractCegarLoop]: Abstraction has 29118 states and 47695 transitions. [2024-12-02 12:53:34,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 12:53:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 29118 states and 47695 transitions. [2024-12-02 12:53:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-12-02 12:53:34,904 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:34,904 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 8, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:53:34,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-12-02 12:53:35,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:35,104 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:35,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:35,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1520017620, now seen corresponding path program 1 times [2024-12-02 12:53:35,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:35,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628373503] [2024-12-02 12:53:35,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:35,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 2 proven. 67 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2024-12-02 12:53:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628373503] [2024-12-02 12:53:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628373503] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355240093] [2024-12-02 12:53:35,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:35,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:35,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:35,515 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:35,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-12-02 12:53:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:35,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:53:35,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-12-02 12:53:36,017 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:53:36,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355240093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:53:36,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:53:36,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 12:53:36,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760576792] [2024-12-02 12:53:36,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:53:36,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:53:36,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:36,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:53:36,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:53:36,018 INFO L87 Difference]: Start difference. First operand 29118 states and 47695 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2024-12-02 12:53:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:37,531 INFO L93 Difference]: Finished difference Result 58365 states and 96807 transitions. [2024-12-02 12:53:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:53:37,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 396 [2024-12-02 12:53:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:37,670 INFO L225 Difference]: With dead ends: 58365 [2024-12-02 12:53:37,670 INFO L226 Difference]: Without dead ends: 29334 [2024-12-02 12:53:37,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:53:37,751 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 22 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:37,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2625 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:53:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29334 states. [2024-12-02 12:53:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29334 to 29334. [2024-12-02 12:53:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29334 states, 22788 states have (on average 1.5977268737932244) internal successors, (36409), 23549 states have internal predecessors, (36409), 4826 states have call successors, (4826), 1128 states have call predecessors, (4826), 1719 states have return successors, (6796), 4928 states have call predecessors, (6796), 4822 states have call successors, (6796) [2024-12-02 12:53:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29334 states to 29334 states and 48031 transitions. [2024-12-02 12:53:39,337 INFO L78 Accepts]: Start accepts. Automaton has 29334 states and 48031 transitions. Word has length 396 [2024-12-02 12:53:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:39,337 INFO L471 AbstractCegarLoop]: Abstraction has 29334 states and 48031 transitions. [2024-12-02 12:53:39,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2024-12-02 12:53:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 29334 states and 48031 transitions. [2024-12-02 12:53:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-12-02 12:53:39,343 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:39,343 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:39,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-12-02 12:53:39,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 12:53:39,544 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:39,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1047921307, now seen corresponding path program 1 times [2024-12-02 12:53:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:39,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62968248] [2024-12-02 12:53:39,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-12-02 12:53:39,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62968248] [2024-12-02 12:53:39,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62968248] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:39,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404762851] [2024-12-02 12:53:39,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:39,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:39,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:39,987 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:39,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-12-02 12:53:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:40,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:53:40,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-12-02 12:53:40,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:53:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-12-02 12:53:41,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404762851] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:53:41,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:53:41,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 7] total 18 [2024-12-02 12:53:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120636210] [2024-12-02 12:53:41,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:53:41,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 12:53:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:41,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 12:53:41,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:53:41,187 INFO L87 Difference]: Start difference. First operand 29334 states and 48031 transitions. Second operand has 18 states, 18 states have (on average 25.055555555555557) internal successors, (451), 17 states have internal predecessors, (451), 9 states have call successors, (88), 4 states have call predecessors, (88), 8 states have return successors, (88), 10 states have call predecessors, (88), 8 states have call successors, (88) [2024-12-02 12:53:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:53:45,997 INFO L93 Difference]: Finished difference Result 62912 states and 104941 transitions. [2024-12-02 12:53:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 12:53:45,998 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 25.055555555555557) internal successors, (451), 17 states have internal predecessors, (451), 9 states have call successors, (88), 4 states have call predecessors, (88), 8 states have return successors, (88), 10 states have call predecessors, (88), 8 states have call successors, (88) Word has length 343 [2024-12-02 12:53:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:53:46,281 INFO L225 Difference]: With dead ends: 62912 [2024-12-02 12:53:46,281 INFO L226 Difference]: Without dead ends: 33665 [2024-12-02 12:53:46,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2024-12-02 12:53:46,424 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 2458 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 5951 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 6700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 5951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:53:46,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2458 Valid, 3267 Invalid, 6700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 5951 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 12:53:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33665 states. [2024-12-02 12:53:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33665 to 31965. [2024-12-02 12:53:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31965 states, 24909 states have (on average 1.5700349271347707) internal successors, (39108), 25576 states have internal predecessors, (39108), 5312 states have call successors, (5312), 1128 states have call predecessors, (5312), 1743 states have return successors, (8119), 5532 states have call predecessors, (8119), 5308 states have call successors, (8119) [2024-12-02 12:53:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31965 states to 31965 states and 52539 transitions. [2024-12-02 12:53:49,050 INFO L78 Accepts]: Start accepts. Automaton has 31965 states and 52539 transitions. Word has length 343 [2024-12-02 12:53:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:53:49,050 INFO L471 AbstractCegarLoop]: Abstraction has 31965 states and 52539 transitions. [2024-12-02 12:53:49,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 25.055555555555557) internal successors, (451), 17 states have internal predecessors, (451), 9 states have call successors, (88), 4 states have call predecessors, (88), 8 states have return successors, (88), 10 states have call predecessors, (88), 8 states have call successors, (88) [2024-12-02 12:53:49,051 INFO L276 IsEmpty]: Start isEmpty. Operand 31965 states and 52539 transitions. [2024-12-02 12:53:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-12-02 12:53:49,064 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:53:49,064 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:53:49,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-12-02 12:53:49,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 12:53:49,265 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:53:49,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:53:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1512180093, now seen corresponding path program 1 times [2024-12-02 12:53:49,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:53:49,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505013904] [2024-12-02 12:53:49,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:53:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-12-02 12:53:49,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:53:49,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505013904] [2024-12-02 12:53:49,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505013904] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:53:49,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887384530] [2024-12-02 12:53:49,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:53:49,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:53:49,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:53:49,541 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:53:49,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-12-02 12:53:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:53:50,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:53:50,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:53:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-12-02 12:53:50,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:53:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-12-02 12:53:51,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887384530] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:53:51,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:53:51,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2024-12-02 12:53:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038693345] [2024-12-02 12:53:51,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:53:51,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 12:53:51,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:53:51,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 12:53:51,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:53:51,362 INFO L87 Difference]: Start difference. First operand 31965 states and 52539 transitions. Second operand has 18 states, 18 states have (on average 21.166666666666668) internal successors, (381), 18 states have internal predecessors, (381), 11 states have call successors, (75), 7 states have call predecessors, (75), 10 states have return successors, (75), 12 states have call predecessors, (75), 10 states have call successors, (75) [2024-12-02 12:54:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:10,688 INFO L93 Difference]: Finished difference Result 170208 states and 286969 transitions. [2024-12-02 12:54:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-12-02 12:54:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 21.166666666666668) internal successors, (381), 18 states have internal predecessors, (381), 11 states have call successors, (75), 7 states have call predecessors, (75), 10 states have return successors, (75), 12 states have call predecessors, (75), 10 states have call successors, (75) Word has length 291 [2024-12-02 12:54:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:11,558 INFO L225 Difference]: With dead ends: 170208 [2024-12-02 12:54:11,558 INFO L226 Difference]: Without dead ends: 136468 [2024-12-02 12:54:11,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 599 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1522 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 12:54:11,853 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 10616 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 8599 mSolverCounterSat, 3631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10717 SdHoareTripleChecker+Valid, 4403 SdHoareTripleChecker+Invalid, 12230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3631 IncrementalHoareTripleChecker+Valid, 8599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:11,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10717 Valid, 4403 Invalid, 12230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3631 Valid, 8599 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-12-02 12:54:11,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136468 states. [2024-12-02 12:54:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136468 to 133572. [2024-12-02 12:54:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133572 states, 103633 states have (on average 1.5747011087201952) internal successors, (163191), 106633 states have internal predecessors, (163191), 22346 states have call successors, (22346), 5212 states have call predecessors, (22346), 7592 states have return successors, (35374), 23018 states have call predecessors, (35374), 22342 states have call successors, (35374) [2024-12-02 12:54:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133572 states to 133572 states and 220911 transitions. [2024-12-02 12:54:24,384 INFO L78 Accepts]: Start accepts. Automaton has 133572 states and 220911 transitions. Word has length 291 [2024-12-02 12:54:24,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:24,385 INFO L471 AbstractCegarLoop]: Abstraction has 133572 states and 220911 transitions. [2024-12-02 12:54:24,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.166666666666668) internal successors, (381), 18 states have internal predecessors, (381), 11 states have call successors, (75), 7 states have call predecessors, (75), 10 states have return successors, (75), 12 states have call predecessors, (75), 10 states have call successors, (75) [2024-12-02 12:54:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 133572 states and 220911 transitions. [2024-12-02 12:54:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-12-02 12:54:24,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:24,399 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:54:24,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-12-02 12:54:24,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-12-02 12:54:24,599 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:24,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:24,600 INFO L85 PathProgramCache]: Analyzing trace with hash 222661502, now seen corresponding path program 1 times [2024-12-02 12:54:24,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:24,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122914911] [2024-12-02 12:54:24,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:24,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-12-02 12:54:24,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:24,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122914911] [2024-12-02 12:54:24,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122914911] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:54:24,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78919437] [2024-12-02 12:54:24,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:24,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:54:24,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:54:24,833 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:54:24,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-12-02 12:54:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:25,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:54:25,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:54:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-12-02 12:54:25,445 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:54:25,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78919437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:25,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:54:25,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 12:54:25,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592128387] [2024-12-02 12:54:25,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:25,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:54:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:25,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:54:25,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:54:25,446 INFO L87 Difference]: Start difference. First operand 133572 states and 220911 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 12:54:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:37,742 INFO L93 Difference]: Finished difference Result 268017 states and 449709 transitions. [2024-12-02 12:54:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:54:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 293 [2024-12-02 12:54:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:38,899 INFO L225 Difference]: With dead ends: 268017 [2024-12-02 12:54:38,899 INFO L226 Difference]: Without dead ends: 134616 [2024-12-02 12:54:39,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 296 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 12:54:39,743 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 20 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:39,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2619 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:54:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134616 states. [2024-12-02 12:54:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134616 to 134616. [2024-12-02 12:54:52,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134616 states, 104561 states have (on average 1.5762569217968458) internal successors, (164815), 107561 states have internal predecessors, (164815), 22346 states have call successors, (22346), 5328 states have call predecessors, (22346), 7708 states have return successors, (35374), 23018 states have call predecessors, (35374), 22342 states have call successors, (35374) [2024-12-02 12:54:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134616 states to 134616 states and 222535 transitions. [2024-12-02 12:54:53,475 INFO L78 Accepts]: Start accepts. Automaton has 134616 states and 222535 transitions. Word has length 293 [2024-12-02 12:54:53,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:53,476 INFO L471 AbstractCegarLoop]: Abstraction has 134616 states and 222535 transitions. [2024-12-02 12:54:53,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 12:54:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 134616 states and 222535 transitions. [2024-12-02 12:54:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-12-02 12:54:53,490 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:53,491 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:53,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-12-02 12:54:53,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:54:53,691 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:53,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:53,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1023152889, now seen corresponding path program 1 times [2024-12-02 12:54:53,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:53,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594467249] [2024-12-02 12:54:53,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:53,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-12-02 12:54:53,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:53,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594467249] [2024-12-02 12:54:53,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594467249] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:54:53,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064840811] [2024-12-02 12:54:53,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:53,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:54:53,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:54:53,988 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:54:53,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-12-02 12:54:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:54,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 12:54:54,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:54:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-12-02 12:54:54,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:54:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064840811] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:54,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:54:54,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2024-12-02 12:54:54,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950173256] [2024-12-02 12:54:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:54,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:54:54,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:54,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:54:54,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:54:54,999 INFO L87 Difference]: Start difference. First operand 134616 states and 222535 transitions. Second operand has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 6 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2024-12-02 12:55:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:22,049 INFO L93 Difference]: Finished difference Result 372241 states and 619205 transitions. [2024-12-02 12:55:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:55:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 6 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) Word has length 287 [2024-12-02 12:55:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:24,040 INFO L225 Difference]: With dead ends: 372241 [2024-12-02 12:55:24,041 INFO L226 Difference]: Without dead ends: 238460 [2024-12-02 12:55:24,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2024-12-02 12:55:24,683 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 2952 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 6559 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 7355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 6559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:24,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3074 Valid, 2955 Invalid, 7355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 6559 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 12:55:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238460 states. [2024-12-02 12:55:45,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238460 to 236585. [2024-12-02 12:55:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236585 states, 183272 states have (on average 1.580126806058754) internal successors, (289593), 188776 states have internal predecessors, (289593), 39384 states have call successors, (39384), 9939 states have call predecessors, (39384), 13928 states have return successors, (64357), 40252 states have call predecessors, (64357), 39380 states have call successors, (64357) [2024-12-02 12:55:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236585 states to 236585 states and 393334 transitions. [2024-12-02 12:55:47,181 INFO L78 Accepts]: Start accepts. Automaton has 236585 states and 393334 transitions. Word has length 287 [2024-12-02 12:55:47,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:47,181 INFO L471 AbstractCegarLoop]: Abstraction has 236585 states and 393334 transitions. [2024-12-02 12:55:47,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 6 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2024-12-02 12:55:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 236585 states and 393334 transitions. [2024-12-02 12:55:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-12-02 12:55:47,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:47,194 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:55:47,560 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forcibly destroying the process [2024-12-02 12:55:47,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-12-02 12:55:47,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:55:47,561 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:47,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1050781955, now seen corresponding path program 1 times [2024-12-02 12:55:47,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:47,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048947753] [2024-12-02 12:55:47,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:47,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-12-02 12:55:47,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:47,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048947753] [2024-12-02 12:55:47,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048947753] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:55:47,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926333141] [2024-12-02 12:55:47,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:47,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:55:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:55:47,794 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:55:47,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3e58f2-73e5-4295-a3a2-d79605ec5b2c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-12-02 12:55:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:48,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 12:55:48,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:55:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-12-02 12:55:48,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:55:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-12-02 12:55:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926333141] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:55:49,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:55:49,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 8] total 17 [2024-12-02 12:55:49,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313957420] [2024-12-02 12:55:49,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:55:49,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:55:49,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:49,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:55:49,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:55:49,749 INFO L87 Difference]: Start difference. First operand 236585 states and 393334 transitions. Second operand has 17 states, 17 states have (on average 21.647058823529413) internal successors, (368), 15 states have internal predecessors, (368), 11 states have call successors, (76), 7 states have call predecessors, (76), 8 states have return successors, (74), 13 states have call predecessors, (74), 10 states have call successors, (74)