./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.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_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/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_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/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_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/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 f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:41:39,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:41:39,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:41:39,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:41:39,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:41:39,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:41:39,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:41:39,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:41:39,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:41:39,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:41:39,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:41:39,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:41:39,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:41:39,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:41:39,265 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:41:39,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:41:39,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:41:39,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:41:39,266 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:41:39,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:41:39,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:41:39,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:41:39,267 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:41:39,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:41:39,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:41:39,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:41:39,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:41:39,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:41:39,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:41:39,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:41:39,268 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_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/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 -> f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 [2024-12-02 10:41:39,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:41:39,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:41:39,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:41:39,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:41:39,505 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:41:39,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2024-12-02 10:41:42,179 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/data/a366e002b/0295cdd9d39b47a2a50473f3f994306a/FLAGa0914612f [2024-12-02 10:41:42,547 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:41:42,548 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2024-12-02 10:41:42,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/data/a366e002b/0295cdd9d39b47a2a50473f3f994306a/FLAGa0914612f [2024-12-02 10:41:42,587 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/data/a366e002b/0295cdd9d39b47a2a50473f3f994306a [2024-12-02 10:41:42,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:41:42,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:41:42,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:41:42,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:41:42,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:41:42,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:41:42" (1/1) ... [2024-12-02 10:41:42,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39859f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:42, skipping insertion in model container [2024-12-02 10:41:42,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:41:42" (1/1) ... [2024-12-02 10:41:42,640 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:41:42,891 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_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2024-12-02 10:41:43,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:41:43,034 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:41:43,040 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-12-02 10:41:43,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [414] [2024-12-02 10:41:43,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1087] [2024-12-02 10:41:43,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1096] [2024-12-02 10:41:43,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1197] [2024-12-02 10:41:43,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1554] [2024-12-02 10:41:43,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1567] [2024-12-02 10:41:43,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1687] [2024-12-02 10:41:43,041 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1722] [2024-12-02 10:41:43,042 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3280] [2024-12-02 10:41:43,081 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_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2024-12-02 10:41:43,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:41:43,161 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:41:43,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43 WrapperNode [2024-12-02 10:41:43,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:41:43,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:41:43,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:41:43,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:41:43,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,219 INFO L138 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 863 [2024-12-02 10:41:43,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:41:43,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:41:43,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:41:43,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:41:43,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,255 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 10:41:43,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,273 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:41:43,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:41:43,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:41:43,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:41:43,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (1/1) ... [2024-12-02 10:41:43,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:41:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:43,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:41:43,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:41:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-12-02 10:41:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-12-02 10:41:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:41:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 10:41:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 10:41:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 10:41:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 10:41:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 10:41:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 10:41:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 10:41:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 10:41:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 10:41:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 10:41:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 10:41:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 10:41:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 10:41:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 10:41:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-12-02 10:41:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-12-02 10:41:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 10:41:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 10:41:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 10:41:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 10:41:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 10:41:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 10:41:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 10:41:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 10:41:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 10:41:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 10:41:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 10:41:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 10:41:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 10:41:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:41:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 10:41:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 10:41:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 10:41:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 10:41:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 10:41:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 10:41:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 10:41:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 10:41:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-12-02 10:41:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-12-02 10:41:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 10:41:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-12-02 10:41:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:41:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:41:43,365 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 10:41:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 10:41:43,535 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:41:43,537 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:41:44,661 INFO L? ?]: Removed 450 outVars from TransFormulas that were not future-live. [2024-12-02 10:41:44,661 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:41:44,681 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:41:44,682 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 10:41:44,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:41:44 BoogieIcfgContainer [2024-12-02 10:41:44,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:41:44,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:41:44,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:41:44,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:41:44,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:41:42" (1/3) ... [2024-12-02 10:41:44,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afcf06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:41:44, skipping insertion in model container [2024-12-02 10:41:44,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:41:43" (2/3) ... [2024-12-02 10:41:44,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5afcf06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:41:44, skipping insertion in model container [2024-12-02 10:41:44,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:41:44" (3/3) ... [2024-12-02 10:41:44,691 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2024-12-02 10:41:44,705 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:41:44,708 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product22.cil.c that has 27 procedures, 578 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:41:44,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:41:44,783 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;@109de614, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:41:44,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:41:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 449 states have (on average 1.688195991091314) internal successors, (758), 472 states have internal predecessors, (758), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2024-12-02 10:41:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 10:41:44,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:44,803 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 10:41:44,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:44,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:44,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1459709573, now seen corresponding path program 1 times [2024-12-02 10:41:44,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:44,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771707095] [2024-12-02 10:41:44,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:44,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:45,300 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 10:41:45,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:45,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771707095] [2024-12-02 10:41:45,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771707095] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:45,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462985541] [2024-12-02 10:41:45,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:45,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:45,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:45,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:45,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:41:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:45,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 10:41:45,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:45,750 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 10:41:45,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:45,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462985541] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:45,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:45,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-12-02 10:41:45,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856672894] [2024-12-02 10:41:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:45,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:41:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:45,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:41:45,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:41:45,780 INFO L87 Difference]: Start difference. First operand has 578 states, 449 states have (on average 1.688195991091314) internal successors, (758), 472 states have internal predecessors, (758), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) 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 10:41:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:45,839 INFO L93 Difference]: Finished difference Result 599 states and 990 transitions. [2024-12-02 10:41:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:41:45,840 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 10:41:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:45,853 INFO L225 Difference]: With dead ends: 599 [2024-12-02 10:41:45,853 INFO L226 Difference]: Without dead ends: 570 [2024-12-02 10:41:45,856 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 10:41:45,858 INFO L435 NwaCegarLoop]: 951 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, 951 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 10:41:45,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-12-02 10:41:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-12-02 10:41:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 464 states have internal predecessors, (747), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 10:41:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 944 transitions. [2024-12-02 10:41:45,940 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 944 transitions. Word has length 83 [2024-12-02 10:41:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:45,942 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 944 transitions. [2024-12-02 10:41:45,942 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 10:41:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 944 transitions. [2024-12-02 10:41:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 10:41:45,947 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:45,947 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 10:41:45,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:41:46,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 10:41:46,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:46,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:46,149 INFO L85 PathProgramCache]: Analyzing trace with hash -105446697, now seen corresponding path program 1 times [2024-12-02 10:41:46,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:46,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076179897] [2024-12-02 10:41:46,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:46,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:46,403 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 10:41:46,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076179897] [2024-12-02 10:41:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076179897] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:46,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121328913] [2024-12-02 10:41:46,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:46,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:46,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:46,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:46,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:41:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:46,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:46,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:46,866 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 10:41:46,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:46,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121328913] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:46,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150298601] [2024-12-02 10:41:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:46,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:46,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:46,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:46,869 INFO L87 Difference]: Start difference. First operand 570 states and 944 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 10:41:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:46,969 INFO L93 Difference]: Finished difference Result 1131 states and 1880 transitions. [2024-12-02 10:41:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:41:46,970 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 10:41:46,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:46,977 INFO L225 Difference]: With dead ends: 1131 [2024-12-02 10:41:46,977 INFO L226 Difference]: Without dead ends: 570 [2024-12-02 10:41:46,982 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 10:41:46,983 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 5 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2790 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 10:41:46,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2790 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-12-02 10:41:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-12-02 10:41:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 443 states have (on average 1.6839729119638827) internal successors, (746), 464 states have internal predecessors, (746), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 10:41:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 943 transitions. [2024-12-02 10:41:47,020 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 943 transitions. Word has length 84 [2024-12-02 10:41:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:47,021 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 943 transitions. [2024-12-02 10:41:47,021 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 10:41:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 943 transitions. [2024-12-02 10:41:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 10:41:47,024 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:47,024 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 10:41:47,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:41:47,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:47,225 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:47,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:47,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1762017825, now seen corresponding path program 1 times [2024-12-02 10:41:47,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:47,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151709700] [2024-12-02 10:41:47,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:47,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:47,417 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 10:41:47,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:47,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151709700] [2024-12-02 10:41:47,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151709700] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:47,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359512412] [2024-12-02 10:41:47,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:47,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:47,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:47,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:47,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:41:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:47,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:47,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:47,791 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 10:41:47,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:47,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359512412] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:47,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:47,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:47,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078758117] [2024-12-02 10:41:47,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:47,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:47,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:47,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:47,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:47,793 INFO L87 Difference]: Start difference. First operand 570 states and 943 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 10:41:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:47,855 INFO L93 Difference]: Finished difference Result 1131 states and 1878 transitions. [2024-12-02 10:41:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:41:47,855 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 10:41:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:47,861 INFO L225 Difference]: With dead ends: 1131 [2024-12-02 10:41:47,861 INFO L226 Difference]: Without dead ends: 570 [2024-12-02 10:41:47,864 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 10:41:47,864 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 4 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2790 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 10:41:47,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2790 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-12-02 10:41:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-12-02 10:41:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 443 states have (on average 1.6817155756207676) internal successors, (745), 464 states have internal predecessors, (745), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 10:41:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 942 transitions. [2024-12-02 10:41:47,888 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 942 transitions. Word has length 86 [2024-12-02 10:41:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:47,888 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 942 transitions. [2024-12-02 10:41:47,888 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 10:41:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 942 transitions. [2024-12-02 10:41:47,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 10:41:47,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:47,890 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 10:41:47,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:41:48,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:48,091 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:48,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:48,091 INFO L85 PathProgramCache]: Analyzing trace with hash -490345001, now seen corresponding path program 1 times [2024-12-02 10:41:48,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:48,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027538501] [2024-12-02 10:41:48,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:48,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:48,197 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 10:41:48,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027538501] [2024-12-02 10:41:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027538501] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216587093] [2024-12-02 10:41:48,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:48,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:48,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:48,200 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:48,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:41:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:48,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:48,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:48,551 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 10:41:48,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216587093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:48,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:48,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:48,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460186174] [2024-12-02 10:41:48,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:48,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:48,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:48,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:48,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:48,553 INFO L87 Difference]: Start difference. First operand 570 states and 942 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 10:41:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:48,640 INFO L93 Difference]: Finished difference Result 1138 states and 1885 transitions. [2024-12-02 10:41:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:41:48,641 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 10:41:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:48,646 INFO L225 Difference]: With dead ends: 1138 [2024-12-02 10:41:48,646 INFO L226 Difference]: Without dead ends: 579 [2024-12-02 10:41:48,649 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 10:41:48,650 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 13 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2787 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 10:41:48,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2787 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:48,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-12-02 10:41:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-12-02 10:41:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6784922394678492) internal successors, (757), 472 states have internal predecessors, (757), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 10:41:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 954 transitions. [2024-12-02 10:41:48,675 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 954 transitions. Word has length 88 [2024-12-02 10:41:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:48,675 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 954 transitions. [2024-12-02 10:41:48,675 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 10:41:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 954 transitions. [2024-12-02 10:41:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 10:41:48,677 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:48,677 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 10:41:48,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 10:41:48,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:48,878 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:48,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash -787474959, now seen corresponding path program 1 times [2024-12-02 10:41:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222885826] [2024-12-02 10:41:48,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:48,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:49,000 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 10:41:49,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:49,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222885826] [2024-12-02 10:41:49,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222885826] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:49,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754644163] [2024-12-02 10:41:49,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:49,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:49,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:49,002 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:49,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:41:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:49,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:49,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:49,380 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 10:41:49,380 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:49,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754644163] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:49,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:49,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:49,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029627336] [2024-12-02 10:41:49,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:49,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:49,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:49,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:49,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:49,382 INFO L87 Difference]: Start difference. First operand 579 states and 954 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 10:41:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:49,463 INFO L93 Difference]: Finished difference Result 1140 states and 1886 transitions. [2024-12-02 10:41:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:41:49,464 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 10:41:49,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:49,470 INFO L225 Difference]: With dead ends: 1140 [2024-12-02 10:41:49,470 INFO L226 Difference]: Without dead ends: 579 [2024-12-02 10:41:49,474 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 10:41:49,474 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 11 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2787 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 10:41:49,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2787 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-12-02 10:41:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-12-02 10:41:49,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6762749445676275) internal successors, (756), 472 states have internal predecessors, (756), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 10:41:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 953 transitions. [2024-12-02 10:41:49,502 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 953 transitions. Word has length 89 [2024-12-02 10:41:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:49,502 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 953 transitions. [2024-12-02 10:41:49,502 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 10:41:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 953 transitions. [2024-12-02 10:41:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 10:41:49,504 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:49,504 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 10:41:49,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 10:41:49,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:49,704 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:49,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash 365876627, now seen corresponding path program 1 times [2024-12-02 10:41:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:49,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525192012] [2024-12-02 10:41:49,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:49,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:49,807 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 10:41:49,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:49,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525192012] [2024-12-02 10:41:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525192012] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006694550] [2024-12-02 10:41:49,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:49,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:49,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:49,810 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:49,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:41:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:50,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:50,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:50,164 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 10:41:50,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006694550] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:50,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:50,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:50,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770897455] [2024-12-02 10:41:50,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:50,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:50,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:50,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:50,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:50,166 INFO L87 Difference]: Start difference. First operand 579 states and 953 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 10:41:50,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:50,221 INFO L93 Difference]: Finished difference Result 1140 states and 1885 transitions. [2024-12-02 10:41:50,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:41:50,221 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 10:41:50,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:50,224 INFO L225 Difference]: With dead ends: 1140 [2024-12-02 10:41:50,224 INFO L226 Difference]: Without dead ends: 579 [2024-12-02 10:41:50,226 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 10:41:50,226 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 10 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2787 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 10:41:50,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2787 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:50,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-12-02 10:41:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-12-02 10:41:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6740576496674058) internal successors, (755), 472 states have internal predecessors, (755), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 10:41:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 952 transitions. [2024-12-02 10:41:50,242 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 952 transitions. Word has length 90 [2024-12-02 10:41:50,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:50,242 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 952 transitions. [2024-12-02 10:41:50,242 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 10:41:50,242 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 952 transitions. [2024-12-02 10:41:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 10:41:50,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:50,243 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 10:41:50,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 10:41:50,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:50,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:50,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash -760484179, now seen corresponding path program 1 times [2024-12-02 10:41:50,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:50,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368404816] [2024-12-02 10:41:50,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:50,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:50,593 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 10:41:50,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:50,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368404816] [2024-12-02 10:41:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368404816] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:50,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910130906] [2024-12-02 10:41:50,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:50,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:50,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:50,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:50,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:41:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:50,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:41:50,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:50,982 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 10:41:50,982 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:50,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910130906] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:50,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:50,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-02 10:41:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793521148] [2024-12-02 10:41:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:50,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:41:50,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:50,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:41:50,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:41:50,984 INFO L87 Difference]: Start difference. First operand 579 states and 952 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 10:41:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:51,090 INFO L93 Difference]: Finished difference Result 1159 states and 1915 transitions. [2024-12-02 10:41:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:41:51,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 91 [2024-12-02 10:41:51,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:51,095 INFO L225 Difference]: With dead ends: 1159 [2024-12-02 10:41:51,095 INFO L226 Difference]: Without dead ends: 602 [2024-12-02 10:41:51,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:41:51,099 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 100 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5506 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:41:51,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5506 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:41:51,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-12-02 10:41:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 598. [2024-12-02 10:41:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 467 states have (on average 1.6723768736616702) internal successors, (781), 490 states have internal predecessors, (781), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-12-02 10:41:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 983 transitions. [2024-12-02 10:41:51,124 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 983 transitions. Word has length 91 [2024-12-02 10:41:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:51,124 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 983 transitions. [2024-12-02 10:41:51,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 10:41:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 983 transitions. [2024-12-02 10:41:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 10:41:51,126 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:51,126 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 10:41:51,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 10:41:51,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:51,327 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:51,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash -316872756, now seen corresponding path program 1 times [2024-12-02 10:41:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:51,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753712681] [2024-12-02 10:41:51,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:51,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:51,424 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 10:41:51,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:51,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753712681] [2024-12-02 10:41:51,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753712681] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:51,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734240027] [2024-12-02 10:41:51,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:51,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:51,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:51,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:51,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:41:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:51,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:51,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:51,763 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 10:41:51,763 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:51,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734240027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:51,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:51,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:51,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768432980] [2024-12-02 10:41:51,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:51,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:51,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:51,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:51,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:51,764 INFO L87 Difference]: Start difference. First operand 598 states and 983 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 10:41:51,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:51,910 INFO L93 Difference]: Finished difference Result 1215 states and 2016 transitions. [2024-12-02 10:41:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:41:51,911 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 10:41:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:51,915 INFO L225 Difference]: With dead ends: 1215 [2024-12-02 10:41:51,915 INFO L226 Difference]: Without dead ends: 613 [2024-12-02 10:41:51,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 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 10:41:51,918 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 76 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2678 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 10:41:51,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2678 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:41:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-12-02 10:41:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 598. [2024-12-02 10:41:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 467 states have (on average 1.6616702355460387) internal successors, (776), 490 states have internal predecessors, (776), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-12-02 10:41:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 978 transitions. [2024-12-02 10:41:51,943 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 978 transitions. Word has length 91 [2024-12-02 10:41:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:51,944 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 978 transitions. [2024-12-02 10:41:51,944 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 10:41:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 978 transitions. [2024-12-02 10:41:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 10:41:51,945 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:51,946 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 10:41:51,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:41:52,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:52,146 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:52,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1135472298, now seen corresponding path program 1 times [2024-12-02 10:41:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989951076] [2024-12-02 10:41:52,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 10:41:52,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:52,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989951076] [2024-12-02 10:41:52,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989951076] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:52,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430483350] [2024-12-02 10:41:52,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:52,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:52,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:52,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:52,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:41:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:52,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:52,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:52,594 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 10:41:52,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:52,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430483350] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:52,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:52,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:52,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386781211] [2024-12-02 10:41:52,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:52,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:52,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:52,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:52,596 INFO L87 Difference]: Start difference. First operand 598 states and 978 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 10:41:52,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:52,700 INFO L93 Difference]: Finished difference Result 1215 states and 2006 transitions. [2024-12-02 10:41:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:41:52,701 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 10:41:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:52,704 INFO L225 Difference]: With dead ends: 1215 [2024-12-02 10:41:52,704 INFO L226 Difference]: Without dead ends: 613 [2024-12-02 10:41:52,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 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 10:41:52,706 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 75 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2678 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 10:41:52,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2678 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:41:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-12-02 10:41:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 598. [2024-12-02 10:41:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 467 states have (on average 1.6509635974304069) internal successors, (771), 490 states have internal predecessors, (771), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-12-02 10:41:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 973 transitions. [2024-12-02 10:41:52,723 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 973 transitions. Word has length 93 [2024-12-02 10:41:52,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:52,724 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 973 transitions. [2024-12-02 10:41:52,724 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 10:41:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 973 transitions. [2024-12-02 10:41:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 10:41:52,725 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:52,725 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 10:41:52,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:41:52,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:52,926 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:52,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:52,926 INFO L85 PathProgramCache]: Analyzing trace with hash -634205844, now seen corresponding path program 1 times [2024-12-02 10:41:52,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:52,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630617489] [2024-12-02 10:41:52,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:52,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 10:41:53,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:53,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630617489] [2024-12-02 10:41:53,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630617489] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:53,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146211516] [2024-12-02 10:41:53,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:53,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:53,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:53,006 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:53,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:41:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:53,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:53,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:53,303 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 10:41:53,303 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:53,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146211516] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:53,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:53,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078654000] [2024-12-02 10:41:53,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:53,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:53,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:53,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:53,304 INFO L87 Difference]: Start difference. First operand 598 states and 973 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 10:41:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:53,460 INFO L93 Difference]: Finished difference Result 1266 states and 2078 transitions. [2024-12-02 10:41:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:41:53,461 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 10:41:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:53,466 INFO L225 Difference]: With dead ends: 1266 [2024-12-02 10:41:53,466 INFO L226 Difference]: Without dead ends: 694 [2024-12-02 10:41:53,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:41:53,469 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 130 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2709 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 10:41:53,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2709 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:41:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-12-02 10:41:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 649. [2024-12-02 10:41:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 517 states have (on average 1.6557059961315281) internal successors, (856), 540 states have internal predecessors, (856), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-12-02 10:41:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1057 transitions. [2024-12-02 10:41:53,495 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1057 transitions. Word has length 95 [2024-12-02 10:41:53,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:53,495 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1057 transitions. [2024-12-02 10:41:53,495 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 10:41:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1057 transitions. [2024-12-02 10:41:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 10:41:53,497 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:53,497 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 10:41:53,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:41:53,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 10:41:53,698 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:53,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1502716548, now seen corresponding path program 1 times [2024-12-02 10:41:53,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:53,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877271727] [2024-12-02 10:41:53,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:53,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:53,839 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 10:41:53,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:53,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877271727] [2024-12-02 10:41:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877271727] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:53,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899577835] [2024-12-02 10:41:53,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:53,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:53,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:53,842 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:53,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:41:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:54,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:41:54,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:54,221 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 10:41:54,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:54,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899577835] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:54,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 10:41:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388899024] [2024-12-02 10:41:54,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:54,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:41:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:54,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:41:54,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:41:54,223 INFO L87 Difference]: Start difference. First operand 649 states and 1057 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 10:41:54,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:54,367 INFO L93 Difference]: Finished difference Result 1228 states and 2007 transitions. [2024-12-02 10:41:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:41:54,368 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 10:41:54,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:54,373 INFO L225 Difference]: With dead ends: 1228 [2024-12-02 10:41:54,373 INFO L226 Difference]: Without dead ends: 671 [2024-12-02 10:41:54,376 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 10:41:54,377 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 113 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6295 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 10:41:54,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6295 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:41:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-12-02 10:41:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 649. [2024-12-02 10:41:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 517 states have (on average 1.6557059961315281) internal successors, (856), 540 states have internal predecessors, (856), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-12-02 10:41:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1057 transitions. [2024-12-02 10:41:54,410 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1057 transitions. Word has length 96 [2024-12-02 10:41:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:54,410 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1057 transitions. [2024-12-02 10:41:54,410 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 10:41:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1057 transitions. [2024-12-02 10:41:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 10:41:54,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:54,413 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 10:41:54,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 10:41:54,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 10:41:54,613 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:54,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1158810716, now seen corresponding path program 1 times [2024-12-02 10:41:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378089326] [2024-12-02 10:41:54,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 10:41:54,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:54,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378089326] [2024-12-02 10:41:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378089326] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:54,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905017314] [2024-12-02 10:41:54,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:54,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:54,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:54,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:54,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:41:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:54,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:54,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:54,997 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 10:41:54,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905017314] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:54,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:54,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:54,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724798481] [2024-12-02 10:41:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:54,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:54,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:54,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:54,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:54,999 INFO L87 Difference]: Start difference. First operand 649 states and 1057 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 10:41:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:55,119 INFO L93 Difference]: Finished difference Result 1269 states and 2079 transitions. [2024-12-02 10:41:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:41:55,119 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 10:41:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:55,122 INFO L225 Difference]: With dead ends: 1269 [2024-12-02 10:41:55,122 INFO L226 Difference]: Without dead ends: 682 [2024-12-02 10:41:55,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:41:55,124 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 124 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:41:55,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2682 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:41:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-12-02 10:41:55,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2024-12-02 10:41:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 517 states have (on average 1.6460348162475822) internal successors, (851), 540 states have internal predecessors, (851), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-12-02 10:41:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1052 transitions. [2024-12-02 10:41:55,139 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1052 transitions. Word has length 96 [2024-12-02 10:41:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:55,139 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1052 transitions. [2024-12-02 10:41:55,139 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 10:41:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1052 transitions. [2024-12-02 10:41:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 10:41:55,141 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:55,141 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 10:41:55,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 10:41:55,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 10:41:55,341 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:55,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:55,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1382596675, now seen corresponding path program 1 times [2024-12-02 10:41:55,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:55,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795392607] [2024-12-02 10:41:55,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:55,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:55,432 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 10:41:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:55,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795392607] [2024-12-02 10:41:55,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795392607] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:55,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331511984] [2024-12-02 10:41:55,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:55,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:55,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:55,435 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:55,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 10:41:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:55,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:41:55,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:55,753 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 10:41:55,753 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:55,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331511984] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:55,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:55,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 10:41:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240601865] [2024-12-02 10:41:55,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:55,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:41:55,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:55,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:41:55,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:41:55,755 INFO L87 Difference]: Start difference. First operand 649 states and 1052 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 10:41:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:55,827 INFO L93 Difference]: Finished difference Result 1163 states and 1899 transitions. [2024-12-02 10:41:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:41:55,827 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 10:41:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:55,831 INFO L225 Difference]: With dead ends: 1163 [2024-12-02 10:41:55,831 INFO L226 Difference]: Without dead ends: 673 [2024-12-02 10:41:55,832 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 10:41:55,833 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 86 mSDsluCounter, 4546 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5471 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 10:41:55,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5471 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:55,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-12-02 10:41:55,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 668. [2024-12-02 10:41:55,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.6454033771106942) internal successors, (877), 558 states have internal predecessors, (877), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 10:41:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1082 transitions. [2024-12-02 10:41:55,852 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1082 transitions. Word has length 96 [2024-12-02 10:41:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:55,853 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1082 transitions. [2024-12-02 10:41:55,853 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 10:41:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1082 transitions. [2024-12-02 10:41:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 10:41:55,855 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:55,855 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 10:41:55,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 10:41:56,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 10:41:56,056 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:56,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1495186314, now seen corresponding path program 1 times [2024-12-02 10:41:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:56,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329007539] [2024-12-02 10:41:56,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:56,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:56,125 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 10:41:56,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:56,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329007539] [2024-12-02 10:41:56,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329007539] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:56,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363087117] [2024-12-02 10:41:56,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:56,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:56,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:56,128 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:56,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 10:41:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:56,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:41:56,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:56,524 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 10:41:56,524 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:56,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363087117] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:56,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:56,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 10:41:56,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404199255] [2024-12-02 10:41:56,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:56,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:41:56,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:56,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:41:56,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:41:56,526 INFO L87 Difference]: Start difference. First operand 668 states and 1082 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 10:41:56,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:56,604 INFO L93 Difference]: Finished difference Result 1193 states and 1950 transitions. [2024-12-02 10:41:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:41:56,605 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 10:41:56,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:56,608 INFO L225 Difference]: With dead ends: 1193 [2024-12-02 10:41:56,608 INFO L226 Difference]: Without dead ends: 703 [2024-12-02 10:41:56,610 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 10:41:56,610 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 95 mSDsluCounter, 4536 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5461 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 10:41:56,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5461 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-12-02 10:41:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 668. [2024-12-02 10:41:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.6454033771106942) internal successors, (877), 558 states have internal predecessors, (877), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 10:41:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1082 transitions. [2024-12-02 10:41:56,626 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1082 transitions. Word has length 97 [2024-12-02 10:41:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:56,627 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1082 transitions. [2024-12-02 10:41:56,627 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 10:41:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1082 transitions. [2024-12-02 10:41:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 10:41:56,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:56,628 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 10:41:56,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 10:41:56,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:56,829 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:56,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:56,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1281495286, now seen corresponding path program 1 times [2024-12-02 10:41:56,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:56,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755180778] [2024-12-02 10:41:56,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:56,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:56,924 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 10:41:56,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755180778] [2024-12-02 10:41:56,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755180778] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894975481] [2024-12-02 10:41:56,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:56,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:56,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:56,927 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:56,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 10:41:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:57,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:41:57,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:57,255 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 10:41:57,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894975481] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:57,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 10:41:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238978607] [2024-12-02 10:41:57,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:57,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:41:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:57,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:41:57,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:41:57,257 INFO L87 Difference]: Start difference. First operand 668 states and 1082 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 10:41:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:57,372 INFO L93 Difference]: Finished difference Result 1178 states and 1924 transitions. [2024-12-02 10:41:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:41:57,373 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 10:41:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:57,377 INFO L225 Difference]: With dead ends: 1178 [2024-12-02 10:41:57,377 INFO L226 Difference]: Without dead ends: 688 [2024-12-02 10:41:57,379 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 10:41:57,380 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 113 mSDsluCounter, 5389 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6303 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 10:41:57,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6303 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:41:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-12-02 10:41:57,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 668. [2024-12-02 10:41:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.6454033771106942) internal successors, (877), 558 states have internal predecessors, (877), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 10:41:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1082 transitions. [2024-12-02 10:41:57,403 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1082 transitions. Word has length 97 [2024-12-02 10:41:57,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:57,403 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1082 transitions. [2024-12-02 10:41:57,403 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 10:41:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1082 transitions. [2024-12-02 10:41:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 10:41:57,405 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:57,405 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 10:41:57,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 10:41:57,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 10:41:57,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:57,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1116006671, now seen corresponding path program 1 times [2024-12-02 10:41:57,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:57,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405266086] [2024-12-02 10:41:57,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:57,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:57,684 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 10:41:57,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405266086] [2024-12-02 10:41:57,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405266086] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251316763] [2024-12-02 10:41:57,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:57,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:57,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:57,686 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:57,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 10:41:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:57,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:41:57,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:57,988 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 10:41:57,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:57,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251316763] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:57,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:57,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:57,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614951505] [2024-12-02 10:41:57,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:57,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:57,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:57,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:57,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:57,990 INFO L87 Difference]: Start difference. First operand 668 states and 1082 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 10:41:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:58,045 INFO L93 Difference]: Finished difference Result 1230 states and 2009 transitions. [2024-12-02 10:41:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:41:58,045 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 10:41:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:58,050 INFO L225 Difference]: With dead ends: 1230 [2024-12-02 10:41:58,050 INFO L226 Difference]: Without dead ends: 668 [2024-12-02 10:41:58,053 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 10:41:58,053 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 13 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2756 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 10:41:58,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2756 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:58,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-12-02 10:41:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2024-12-02 10:41:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.6378986866791745) internal successors, (873), 558 states have internal predecessors, (873), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 10:41:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1078 transitions. [2024-12-02 10:41:58,067 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1078 transitions. Word has length 97 [2024-12-02 10:41:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:58,067 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1078 transitions. [2024-12-02 10:41:58,067 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 10:41:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1078 transitions. [2024-12-02 10:41:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 10:41:58,069 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:58,069 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 10:41:58,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 10:41:58,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:41:58,269 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:58,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash -633616571, now seen corresponding path program 1 times [2024-12-02 10:41:58,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:58,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56565196] [2024-12-02 10:41:58,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:58,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:58,322 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 10:41:58,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56565196] [2024-12-02 10:41:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56565196] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875263152] [2024-12-02 10:41:58,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:58,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:58,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:58,325 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:58,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 10:41:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:58,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:41:58,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:58,628 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 10:41:58,628 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:58,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875263152] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:58,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:58,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:41:58,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320186815] [2024-12-02 10:41:58,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:58,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:41:58,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:58,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:41:58,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:41:58,630 INFO L87 Difference]: Start difference. First operand 668 states and 1078 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 10:41:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:58,671 INFO L93 Difference]: Finished difference Result 1274 states and 2077 transitions. [2024-12-02 10:41:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:41:58,671 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 10:41:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:58,674 INFO L225 Difference]: With dead ends: 1274 [2024-12-02 10:41:58,674 INFO L226 Difference]: Without dead ends: 692 [2024-12-02 10:41:58,675 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 10:41:58,675 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 7 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2729 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 10:41:58,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2729 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:41:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-12-02 10:41:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2024-12-02 10:41:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 557 states have (on average 1.6175942549371634) internal successors, (901), 582 states have internal predecessors, (901), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 10:41:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1106 transitions. [2024-12-02 10:41:58,695 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1106 transitions. Word has length 98 [2024-12-02 10:41:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:58,695 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1106 transitions. [2024-12-02 10:41:58,696 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 10:41:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1106 transitions. [2024-12-02 10:41:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 10:41:58,698 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:58,698 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 10:41:58,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 10:41:58,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 10:41:58,898 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:58,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1073365364, now seen corresponding path program 1 times [2024-12-02 10:41:58,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:58,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459005088] [2024-12-02 10:41:58,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:58,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:58,960 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 10:41:58,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459005088] [2024-12-02 10:41:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459005088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:58,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057916726] [2024-12-02 10:41:58,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:58,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:58,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:58,962 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:58,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 10:41:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:59,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:41:59,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:59,305 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 10:41:59,305 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:41:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057916726] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:59,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:41:59,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 10:41:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882493852] [2024-12-02 10:41:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:59,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:41:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:59,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:41:59,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:41:59,307 INFO L87 Difference]: Start difference. First operand 692 states and 1106 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 10:41:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:59,425 INFO L93 Difference]: Finished difference Result 1208 states and 1956 transitions. [2024-12-02 10:41:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:41:59,428 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 10:41:59,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:59,433 INFO L225 Difference]: With dead ends: 1208 [2024-12-02 10:41:59,433 INFO L226 Difference]: Without dead ends: 718 [2024-12-02 10:41:59,435 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 10:41:59,436 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 119 mSDsluCounter, 5351 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6259 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 10:41:59,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6259 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:41:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-12-02 10:41:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 692. [2024-12-02 10:41:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 557 states have (on average 1.6175942549371634) internal successors, (901), 582 states have internal predecessors, (901), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 10:41:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1106 transitions. [2024-12-02 10:41:59,456 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1106 transitions. Word has length 99 [2024-12-02 10:41:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:59,457 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1106 transitions. [2024-12-02 10:41:59,457 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 10:41:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1106 transitions. [2024-12-02 10:41:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 10:41:59,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:59,459 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 10:41:59,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 10:41:59,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:41:59,659 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:59,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1344587658, now seen corresponding path program 1 times [2024-12-02 10:41:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943937862] [2024-12-02 10:41:59,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:59,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:59,736 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 10:41:59,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:59,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943937862] [2024-12-02 10:41:59,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943937862] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:59,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940696186] [2024-12-02 10:41:59,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:59,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:59,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:59,738 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:59,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 10:41:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:59,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:41:59,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:00,263 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 10:42:00,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940696186] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:00,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:00,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2024-12-02 10:42:00,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37418401] [2024-12-02 10:42:00,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:00,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:42:00,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:00,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:42:00,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:42:00,264 INFO L87 Difference]: Start difference. First operand 692 states and 1106 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 10:42:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:03,005 INFO L93 Difference]: Finished difference Result 2252 states and 3723 transitions. [2024-12-02 10:42:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:03,005 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 10:42:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:03,012 INFO L225 Difference]: With dead ends: 2252 [2024-12-02 10:42:03,012 INFO L226 Difference]: Without dead ends: 1767 [2024-12-02 10:42:03,014 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 10:42:03,014 INFO L435 NwaCegarLoop]: 595 mSDtfsCounter, 2870 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 3854 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 4391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 3854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:03,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 1669 Invalid, 4391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 3854 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 10:42:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2024-12-02 10:42:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1580. [2024-12-02 10:42:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1258 states have (on average 1.6597774244833068) internal successors, (2088), 1301 states have internal predecessors, (2088), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2024-12-02 10:42:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2609 transitions. [2024-12-02 10:42:03,058 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2609 transitions. Word has length 99 [2024-12-02 10:42:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:03,058 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2609 transitions. [2024-12-02 10:42:03,058 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 10:42:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2609 transitions. [2024-12-02 10:42:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 10:42:03,061 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:03,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:03,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 10:42:03,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:03,262 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:03,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:03,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1248155968, now seen corresponding path program 1 times [2024-12-02 10:42:03,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:03,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627472509] [2024-12-02 10:42:03,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:03,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:03,391 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 10:42:03,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:03,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627472509] [2024-12-02 10:42:03,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627472509] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:03,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802218043] [2024-12-02 10:42:03,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:03,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:03,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:03,393 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:03,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 10:42:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:03,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:42:03,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:03,832 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 10:42:03,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802218043] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:03,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-12-02 10:42:03,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081072877] [2024-12-02 10:42:03,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:03,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:42:03,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:03,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:42:03,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:42:03,834 INFO L87 Difference]: Start difference. First operand 1580 states and 2609 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 10:42:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:03,915 INFO L93 Difference]: Finished difference Result 2961 states and 4936 transitions. [2024-12-02 10:42:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:42:03,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-12-02 10:42:03,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:03,924 INFO L225 Difference]: With dead ends: 2961 [2024-12-02 10:42:03,924 INFO L226 Difference]: Without dead ends: 1589 [2024-12-02 10:42:03,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:42:03,930 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 0 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:03,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3700 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2024-12-02 10:42:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2024-12-02 10:42:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1267 states have (on average 1.6550907655880032) internal successors, (2097), 1310 states have internal predecessors, (2097), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2024-12-02 10:42:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2618 transitions. [2024-12-02 10:42:03,996 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2618 transitions. Word has length 138 [2024-12-02 10:42:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:03,996 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2618 transitions. [2024-12-02 10:42:03,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 10:42:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2618 transitions. [2024-12-02 10:42:04,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 10:42:04,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:04,000 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:04,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 10:42:04,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:04,200 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:04,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:04,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1156104562, now seen corresponding path program 1 times [2024-12-02 10:42:04,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:04,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541119766] [2024-12-02 10:42:04,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:04,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 10:42:04,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541119766] [2024-12-02 10:42:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541119766] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593052898] [2024-12-02 10:42:04,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:04,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:04,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:04,294 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:04,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 10:42:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:04,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 10:42:04,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:04,731 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:04,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593052898] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:04,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:04,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 10:42:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795787960] [2024-12-02 10:42:04,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:04,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:42:04,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:04,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:42:04,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:04,732 INFO L87 Difference]: Start difference. First operand 1589 states and 2618 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, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 10:42:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:07,102 INFO L93 Difference]: Finished difference Result 4252 states and 7059 transitions. [2024-12-02 10:42:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 10:42:07,102 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, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2024-12-02 10:42:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:07,114 INFO L225 Difference]: With dead ends: 4252 [2024-12-02 10:42:07,114 INFO L226 Difference]: Without dead ends: 2704 [2024-12-02 10:42:07,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 136 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 10:42:07,119 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 1696 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 5098 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 5349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 5098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:07,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2266 Invalid, 5349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 5098 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 10:42:07,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2024-12-02 10:42:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2479. [2024-12-02 10:42:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1950 states have (on average 1.6374358974358973) internal successors, (3193), 2002 states have internal predecessors, (3193), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2024-12-02 10:42:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 4076 transitions. [2024-12-02 10:42:07,198 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 4076 transitions. Word has length 140 [2024-12-02 10:42:07,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:07,198 INFO L471 AbstractCegarLoop]: Abstraction has 2479 states and 4076 transitions. [2024-12-02 10:42:07,199 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, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 10:42:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 4076 transitions. [2024-12-02 10:42:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 10:42:07,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:07,202 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:07,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 10:42:07,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:07,402 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:07,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1914828772, now seen corresponding path program 1 times [2024-12-02 10:42:07,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:07,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339660964] [2024-12-02 10:42:07,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:07,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 10:42:07,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339660964] [2024-12-02 10:42:07,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339660964] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506123593] [2024-12-02 10:42:07,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:07,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:07,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:07,523 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:07,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 10:42:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:07,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:42:07,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:07,993 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:07,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506123593] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:07,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:07,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 10:42:07,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939175884] [2024-12-02 10:42:07,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:07,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:42:07,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:07,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:42:07,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:42:07,994 INFO L87 Difference]: Start difference. First operand 2479 states and 4076 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 10:42:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:08,336 INFO L93 Difference]: Finished difference Result 2591 states and 4263 transitions. [2024-12-02 10:42:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:42:08,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 141 [2024-12-02 10:42:08,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:08,348 INFO L225 Difference]: With dead ends: 2591 [2024-12-02 10:42:08,348 INFO L226 Difference]: Without dead ends: 2576 [2024-12-02 10:42:08,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 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 10:42:08,352 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 892 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:08,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1680 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:42:08,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2024-12-02 10:42:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2485. [2024-12-02 10:42:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 1956 states have (on average 1.635480572597137) internal successors, (3199), 2008 states have internal predecessors, (3199), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2024-12-02 10:42:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4082 transitions. [2024-12-02 10:42:08,432 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4082 transitions. Word has length 141 [2024-12-02 10:42:08,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:08,432 INFO L471 AbstractCegarLoop]: Abstraction has 2485 states and 4082 transitions. [2024-12-02 10:42:08,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 10:42:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4082 transitions. [2024-12-02 10:42:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 10:42:08,435 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:08,435 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:08,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 10:42:08,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:08,635 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:08,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash 732025855, now seen corresponding path program 1 times [2024-12-02 10:42:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:08,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103525399] [2024-12-02 10:42:08,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:08,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 10:42:08,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:08,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103525399] [2024-12-02 10:42:08,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103525399] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:08,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977415211] [2024-12-02 10:42:08,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:08,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:08,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:08,736 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:08,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 10:42:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:09,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:42:09,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:09,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977415211] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:09,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-12-02 10:42:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255227673] [2024-12-02 10:42:09,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:09,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:09,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:09,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:42:09,147 INFO L87 Difference]: Start difference. First operand 2485 states and 4082 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 10:42:09,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:09,498 INFO L93 Difference]: Finished difference Result 2621 states and 4272 transitions. [2024-12-02 10:42:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:42:09,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-12-02 10:42:09,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:09,507 INFO L225 Difference]: With dead ends: 2621 [2024-12-02 10:42:09,507 INFO L226 Difference]: Without dead ends: 2606 [2024-12-02 10:42:09,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 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 10:42:09,509 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 865 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:09,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 3647 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:42:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2024-12-02 10:42:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2585. [2024-12-02 10:42:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2032 states have (on average 1.626476377952756) internal successors, (3305), 2084 states have internal predecessors, (3305), 436 states have call successors, (436), 99 states have call predecessors, (436), 116 states have return successors, (482), 412 states have call predecessors, (482), 431 states have call successors, (482) [2024-12-02 10:42:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4223 transitions. [2024-12-02 10:42:09,602 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4223 transitions. Word has length 147 [2024-12-02 10:42:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:09,602 INFO L471 AbstractCegarLoop]: Abstraction has 2585 states and 4223 transitions. [2024-12-02 10:42:09,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-02 10:42:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4223 transitions. [2024-12-02 10:42:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 10:42:09,605 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:09,605 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:09,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 10:42:09,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:09,806 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:09,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1367078640, now seen corresponding path program 1 times [2024-12-02 10:42:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:09,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560886379] [2024-12-02 10:42:09,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 10:42:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560886379] [2024-12-02 10:42:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560886379] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623960414] [2024-12-02 10:42:09,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:09,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:09,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:09,889 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:09,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 10:42:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:10,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:42:10,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 10:42:10,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:10,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623960414] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:10,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:10,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 10:42:10,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408734951] [2024-12-02 10:42:10,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:10,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:42:10,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:10,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:42:10,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:42:10,271 INFO L87 Difference]: Start difference. First operand 2585 states and 4223 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 10:42:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:10,402 INFO L93 Difference]: Finished difference Result 5144 states and 8416 transitions. [2024-12-02 10:42:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:42:10,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2024-12-02 10:42:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:10,416 INFO L225 Difference]: With dead ends: 5144 [2024-12-02 10:42:10,417 INFO L226 Difference]: Without dead ends: 2554 [2024-12-02 10:42:10,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 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 10:42:10,426 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 7 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2759 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 10:42:10,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2759 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2024-12-02 10:42:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2554. [2024-12-02 10:42:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2004 states have (on average 1.62624750499002) internal successors, (3259), 2054 states have internal predecessors, (3259), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-12-02 10:42:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 4173 transitions. [2024-12-02 10:42:10,568 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 4173 transitions. Word has length 158 [2024-12-02 10:42:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:10,568 INFO L471 AbstractCegarLoop]: Abstraction has 2554 states and 4173 transitions. [2024-12-02 10:42:10,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 10:42:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 4173 transitions. [2024-12-02 10:42:10,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 10:42:10,572 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:10,572 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:10,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 10:42:10,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:10,773 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:10,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:10,773 INFO L85 PathProgramCache]: Analyzing trace with hash 165079877, now seen corresponding path program 1 times [2024-12-02 10:42:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:10,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788168720] [2024-12-02 10:42:10,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:10,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 10:42:10,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788168720] [2024-12-02 10:42:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788168720] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757704072] [2024-12-02 10:42:10,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:10,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:10,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:10,990 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:10,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 10:42:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:11,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 10:42:11,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:42:11,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:11,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757704072] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:11,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:11,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-12-02 10:42:11,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871608916] [2024-12-02 10:42:11,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:11,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:42:11,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:11,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:42:11,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:42:11,344 INFO L87 Difference]: Start difference. First operand 2554 states and 4173 transitions. Second operand has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 10:42:11,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:11,461 INFO L93 Difference]: Finished difference Result 5077 states and 8310 transitions. [2024-12-02 10:42:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:11,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2024-12-02 10:42:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:11,472 INFO L225 Difference]: With dead ends: 5077 [2024-12-02 10:42:11,472 INFO L226 Difference]: Without dead ends: 2554 [2024-12-02 10:42:11,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 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 10:42:11,477 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 119 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5514 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 10:42:11,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5514 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2024-12-02 10:42:11,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2533. [2024-12-02 10:42:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1983 states have (on average 1.626323751891074) internal successors, (3225), 2033 states have internal predecessors, (3225), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-12-02 10:42:11,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 4139 transitions. [2024-12-02 10:42:11,594 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 4139 transitions. Word has length 160 [2024-12-02 10:42:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:11,594 INFO L471 AbstractCegarLoop]: Abstraction has 2533 states and 4139 transitions. [2024-12-02 10:42:11,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 10:42:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 4139 transitions. [2024-12-02 10:42:11,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 10:42:11,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:11,598 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:11,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 10:42:11,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 10:42:11,799 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:11,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2010328374, now seen corresponding path program 1 times [2024-12-02 10:42:11,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:11,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364457145] [2024-12-02 10:42:11,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:11,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:42:11,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:11,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364457145] [2024-12-02 10:42:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364457145] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:11,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639248055] [2024-12-02 10:42:11,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:11,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:11,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:11,904 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:11,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 10:42:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:12,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:42:12,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:42:12,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:42:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639248055] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:12,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:42:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 10:42:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854215166] [2024-12-02 10:42:12,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:12,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:42:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:12,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:42:12,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:42:12,316 INFO L87 Difference]: Start difference. First operand 2533 states and 4139 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 10:42:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:12,473 INFO L93 Difference]: Finished difference Result 5059 states and 8280 transitions. [2024-12-02 10:42:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:42:12,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2024-12-02 10:42:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:12,489 INFO L225 Difference]: With dead ends: 5059 [2024-12-02 10:42:12,489 INFO L226 Difference]: Without dead ends: 2557 [2024-12-02 10:42:12,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 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 10:42:12,500 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 128 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2638 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 10:42:12,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2638 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:42:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2024-12-02 10:42:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2533. [2024-12-02 10:42:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1983 states have (on average 1.6258194654563791) internal successors, (3224), 2033 states have internal predecessors, (3224), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-12-02 10:42:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 4138 transitions. [2024-12-02 10:42:12,624 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 4138 transitions. Word has length 162 [2024-12-02 10:42:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:12,624 INFO L471 AbstractCegarLoop]: Abstraction has 2533 states and 4138 transitions. [2024-12-02 10:42:12,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 10:42:12,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 4138 transitions. [2024-12-02 10:42:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 10:42:12,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:12,627 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:12,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 10:42:12,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 10:42:12,828 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:12,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1424922018, now seen corresponding path program 1 times [2024-12-02 10:42:12,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:12,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897990417] [2024-12-02 10:42:12,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 10:42:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897990417] [2024-12-02 10:42:12,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897990417] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:12,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:12,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:42:12,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854224518] [2024-12-02 10:42:12,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:12,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:42:12,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:12,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:42:12,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:42:12,906 INFO L87 Difference]: Start difference. First operand 2533 states and 4138 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 10:42:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:12,984 INFO L93 Difference]: Finished difference Result 4994 states and 8189 transitions. [2024-12-02 10:42:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:42:12,985 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), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2024-12-02 10:42:12,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:12,997 INFO L225 Difference]: With dead ends: 4994 [2024-12-02 10:42:12,997 INFO L226 Difference]: Without dead ends: 2493 [2024-12-02 10:42:13,003 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 10:42:13,003 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 8 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2756 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 10:42:13,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2756 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2024-12-02 10:42:13,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2024-12-02 10:42:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 1946 states have (on average 1.6243576567317575) internal successors, (3161), 1994 states have internal predecessors, (3161), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-12-02 10:42:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 4071 transitions. [2024-12-02 10:42:13,093 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 4071 transitions. Word has length 163 [2024-12-02 10:42:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:13,093 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 4071 transitions. [2024-12-02 10:42:13,094 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), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 10:42:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 4071 transitions. [2024-12-02 10:42:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 10:42:13,097 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:13,097 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:13,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 10:42:13,098 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:13,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:13,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1305349310, now seen corresponding path program 1 times [2024-12-02 10:42:13,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:13,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745463408] [2024-12-02 10:42:13,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:13,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 10:42:13,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:13,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745463408] [2024-12-02 10:42:13,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745463408] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:13,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:13,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:42:13,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288768489] [2024-12-02 10:42:13,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:13,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:42:13,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:13,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:42:13,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:42:13,333 INFO L87 Difference]: Start difference. First operand 2493 states and 4071 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, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 10:42:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:13,466 INFO L93 Difference]: Finished difference Result 4897 states and 8028 transitions. [2024-12-02 10:42:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:13,467 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, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2024-12-02 10:42:13,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:13,488 INFO L225 Difference]: With dead ends: 4897 [2024-12-02 10:42:13,489 INFO L226 Difference]: Without dead ends: 2479 [2024-12-02 10:42:13,492 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 10:42:13,492 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 88 mSDsluCounter, 4437 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5340 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 10:42:13,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5340 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:42:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2024-12-02 10:42:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2479. [2024-12-02 10:42:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1932 states have (on average 1.6231884057971016) internal successors, (3136), 1980 states have internal predecessors, (3136), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-12-02 10:42:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 4046 transitions. [2024-12-02 10:42:13,554 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 4046 transitions. Word has length 164 [2024-12-02 10:42:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:13,554 INFO L471 AbstractCegarLoop]: Abstraction has 2479 states and 4046 transitions. [2024-12-02 10:42:13,554 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, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 10:42:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 4046 transitions. [2024-12-02 10:42:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 10:42:13,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:13,557 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:13,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 10:42:13,557 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:13,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:13,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2127229875, now seen corresponding path program 1 times [2024-12-02 10:42:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840985838] [2024-12-02 10:42:13,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:42:13,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840985838] [2024-12-02 10:42:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840985838] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:13,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:13,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 10:42:13,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874987555] [2024-12-02 10:42:13,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:13,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 10:42:13,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:13,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 10:42:13,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:13,797 INFO L87 Difference]: Start difference. First operand 2479 states and 4046 transitions. Second operand has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 10:42:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:14,029 INFO L93 Difference]: Finished difference Result 4924 states and 8056 transitions. [2024-12-02 10:42:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:42:14,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 165 [2024-12-02 10:42:14,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:14,042 INFO L225 Difference]: With dead ends: 4924 [2024-12-02 10:42:14,042 INFO L226 Difference]: Without dead ends: 2470 [2024-12-02 10:42:14,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:42:14,048 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 45 mSDsluCounter, 6857 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7720 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:14,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7720 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:42:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2024-12-02 10:42:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2470. [2024-12-02 10:42:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1923 states have (on average 1.6229849193967758) internal successors, (3121), 1971 states have internal predecessors, (3121), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-12-02 10:42:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 4031 transitions. [2024-12-02 10:42:14,125 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 4031 transitions. Word has length 165 [2024-12-02 10:42:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:14,125 INFO L471 AbstractCegarLoop]: Abstraction has 2470 states and 4031 transitions. [2024-12-02 10:42:14,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 10:42:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 4031 transitions. [2024-12-02 10:42:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 10:42:14,128 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:14,128 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:14,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 10:42:14,128 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:14,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash 733621867, now seen corresponding path program 1 times [2024-12-02 10:42:14,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802359673] [2024-12-02 10:42:14,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:42:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802359673] [2024-12-02 10:42:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802359673] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 10:42:14,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970021811] [2024-12-02 10:42:14,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:14,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 10:42:14,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:14,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 10:42:14,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:14,533 INFO L87 Difference]: Start difference. First operand 2470 states and 4031 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, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 10:42:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:14,675 INFO L93 Difference]: Finished difference Result 4856 states and 7962 transitions. [2024-12-02 10:42:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:42:14,676 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, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 166 [2024-12-02 10:42:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:14,690 INFO L225 Difference]: With dead ends: 4856 [2024-12-02 10:42:14,690 INFO L226 Difference]: Without dead ends: 2464 [2024-12-02 10:42:14,698 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 10:42:14,698 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 31 mSDsluCounter, 6060 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6932 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:14,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6932 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:42:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2024-12-02 10:42:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2464. [2024-12-02 10:42:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1917 states have (on average 1.624413145539906) internal successors, (3114), 1965 states have internal predecessors, (3114), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-12-02 10:42:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4024 transitions. [2024-12-02 10:42:14,832 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4024 transitions. Word has length 166 [2024-12-02 10:42:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:14,833 INFO L471 AbstractCegarLoop]: Abstraction has 2464 states and 4024 transitions. [2024-12-02 10:42:14,833 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, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 10:42:14,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4024 transitions. [2024-12-02 10:42:14,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 10:42:14,837 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:14,837 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:14,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 10:42:14,837 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:14,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash 287949225, now seen corresponding path program 1 times [2024-12-02 10:42:14,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:14,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625214249] [2024-12-02 10:42:14,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:14,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:15,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:15,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625214249] [2024-12-02 10:42:15,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625214249] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:15,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:15,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:42:15,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361797159] [2024-12-02 10:42:15,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:15,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:15,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:15,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:15,023 INFO L87 Difference]: Start difference. First operand 2464 states and 4024 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:17,308 INFO L93 Difference]: Finished difference Result 6926 states and 11521 transitions. [2024-12-02 10:42:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 166 [2024-12-02 10:42:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:17,320 INFO L225 Difference]: With dead ends: 6926 [2024-12-02 10:42:17,320 INFO L226 Difference]: Without dead ends: 4551 [2024-12-02 10:42:17,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:17,326 INFO L435 NwaCegarLoop]: 705 mSDtfsCounter, 3258 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 3416 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 4305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 3416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:17,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3294 Valid, 1773 Invalid, 4305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 3416 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 10:42:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2024-12-02 10:42:17,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4168. [2024-12-02 10:42:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 3219 states have (on average 1.6126126126126126) internal successors, (5191), 3306 states have internal predecessors, (5191), 754 states have call successors, (754), 162 states have call predecessors, (754), 194 states have return successors, (859), 726 states have call predecessors, (859), 749 states have call successors, (859) [2024-12-02 10:42:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6804 transitions. [2024-12-02 10:42:17,490 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6804 transitions. Word has length 166 [2024-12-02 10:42:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:17,490 INFO L471 AbstractCegarLoop]: Abstraction has 4168 states and 6804 transitions. [2024-12-02 10:42:17,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6804 transitions. [2024-12-02 10:42:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-02 10:42:17,493 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:17,493 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:17,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 10:42:17,493 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:17,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:17,494 INFO L85 PathProgramCache]: Analyzing trace with hash -496879624, now seen corresponding path program 1 times [2024-12-02 10:42:17,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:17,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920926688] [2024-12-02 10:42:17,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:17,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920926688] [2024-12-02 10:42:17,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920926688] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:17,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:17,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:42:17,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428054303] [2024-12-02 10:42:17,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:17,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:17,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:17,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:17,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:17,646 INFO L87 Difference]: Start difference. First operand 4168 states and 6804 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:20,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:20,182 INFO L93 Difference]: Finished difference Result 12926 states and 21539 transitions. [2024-12-02 10:42:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:20,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 167 [2024-12-02 10:42:20,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:20,208 INFO L225 Difference]: With dead ends: 12926 [2024-12-02 10:42:20,208 INFO L226 Difference]: Without dead ends: 8850 [2024-12-02 10:42:20,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:20,219 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 3271 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 3379 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 4291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 3379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:20,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3308 Valid, 1786 Invalid, 4291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 3379 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 10:42:20,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8850 states. [2024-12-02 10:42:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8850 to 8086. [2024-12-02 10:42:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 6186 states have (on average 1.603297769156159) internal successors, (9918), 6366 states have internal predecessors, (9918), 1521 states have call successors, (1521), 288 states have call predecessors, (1521), 378 states have return successors, (1820), 1499 states have call predecessors, (1820), 1516 states have call successors, (1820) [2024-12-02 10:42:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 13259 transitions. [2024-12-02 10:42:20,711 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 13259 transitions. Word has length 167 [2024-12-02 10:42:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:20,712 INFO L471 AbstractCegarLoop]: Abstraction has 8086 states and 13259 transitions. [2024-12-02 10:42:20,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 13259 transitions. [2024-12-02 10:42:20,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 10:42:20,716 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:20,716 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:20,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 10:42:20,717 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:20,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -100261682, now seen corresponding path program 1 times [2024-12-02 10:42:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:20,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027059660] [2024-12-02 10:42:20,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:20,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:20,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027059660] [2024-12-02 10:42:20,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027059660] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:20,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:20,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:42:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87089161] [2024-12-02 10:42:20,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:20,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:20,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:20,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:20,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:20,956 INFO L87 Difference]: Start difference. First operand 8086 states and 13259 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:23,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:23,882 INFO L93 Difference]: Finished difference Result 27383 states and 45981 transitions. [2024-12-02 10:42:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:23,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 168 [2024-12-02 10:42:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:23,941 INFO L225 Difference]: With dead ends: 27383 [2024-12-02 10:42:23,941 INFO L226 Difference]: Without dead ends: 19395 [2024-12-02 10:42:23,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:23,964 INFO L435 NwaCegarLoop]: 710 mSDtfsCounter, 3283 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 3386 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 4301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 3386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:23,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3321 Valid, 1807 Invalid, 4301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 3386 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 10:42:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19395 states. [2024-12-02 10:42:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19395 to 17442. [2024-12-02 10:42:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17442 states, 13208 states have (on average 1.596305269533616) internal successors, (21084), 13616 states have internal predecessors, (21084), 3426 states have call successors, (3426), 540 states have call predecessors, (3426), 807 states have return successors, (4334), 3460 states have call predecessors, (4334), 3421 states have call successors, (4334) [2024-12-02 10:42:24,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17442 states to 17442 states and 28844 transitions. [2024-12-02 10:42:24,966 INFO L78 Accepts]: Start accepts. Automaton has 17442 states and 28844 transitions. Word has length 168 [2024-12-02 10:42:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:24,967 INFO L471 AbstractCegarLoop]: Abstraction has 17442 states and 28844 transitions. [2024-12-02 10:42:24,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 17442 states and 28844 transitions. [2024-12-02 10:42:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 10:42:24,969 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:24,970 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:24,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 10:42:24,970 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:24,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1733498883, now seen corresponding path program 1 times [2024-12-02 10:42:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:24,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047872405] [2024-12-02 10:42:24,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:25,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:25,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047872405] [2024-12-02 10:42:25,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047872405] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:25,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:25,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:42:25,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101563225] [2024-12-02 10:42:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:25,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:25,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:25,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:25,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:25,113 INFO L87 Difference]: Start difference. First operand 17442 states and 28844 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:29,889 INFO L93 Difference]: Finished difference Result 63872 states and 108494 transitions. [2024-12-02 10:42:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:29,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 169 [2024-12-02 10:42:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:30,029 INFO L225 Difference]: With dead ends: 63872 [2024-12-02 10:42:30,029 INFO L226 Difference]: Without dead ends: 46540 [2024-12-02 10:42:30,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:30,081 INFO L435 NwaCegarLoop]: 716 mSDtfsCounter, 3295 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 4311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:30,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3334 Valid, 1828 Invalid, 4311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 10:42:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46540 states. [2024-12-02 10:42:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46540 to 40862. [2024-12-02 10:42:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40862 states, 30650 states have (on average 1.591451876019576) internal successors, (48778), 31634 states have internal predecessors, (48778), 8355 states have call successors, (8355), 1044 states have call predecessors, (8355), 1856 states have return successors, (11198), 8641 states have call predecessors, (11198), 8350 states have call successors, (11198) [2024-12-02 10:42:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40862 states to 40862 states and 68331 transitions. [2024-12-02 10:42:32,705 INFO L78 Accepts]: Start accepts. Automaton has 40862 states and 68331 transitions. Word has length 169 [2024-12-02 10:42:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:32,706 INFO L471 AbstractCegarLoop]: Abstraction has 40862 states and 68331 transitions. [2024-12-02 10:42:32,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 40862 states and 68331 transitions. [2024-12-02 10:42:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 10:42:32,711 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:32,712 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:32,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 10:42:32,712 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:32,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:32,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1867736077, now seen corresponding path program 1 times [2024-12-02 10:42:32,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:32,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012189209] [2024-12-02 10:42:32,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:32,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:32,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:32,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012189209] [2024-12-02 10:42:32,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012189209] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:32,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:32,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:42:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497457359] [2024-12-02 10:42:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:32,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:42:32,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:32,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:42:32,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:42:32,966 INFO L87 Difference]: Start difference. First operand 40862 states and 68331 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:42,222 INFO L93 Difference]: Finished difference Result 160709 states and 276545 transitions. [2024-12-02 10:42:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:42:42,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 170 [2024-12-02 10:42:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:42,661 INFO L225 Difference]: With dead ends: 160709 [2024-12-02 10:42:42,661 INFO L226 Difference]: Without dead ends: 119981 [2024-12-02 10:42:42,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:42:42,800 INFO L435 NwaCegarLoop]: 722 mSDtfsCounter, 3307 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3347 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 4322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:42,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3347 Valid, 1849 Invalid, 4322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 3402 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 10:42:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119981 states. [2024-12-02 10:42:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119981 to 102518. [2024-12-02 10:42:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102518 states, 76320 states have (on average 1.588679245283019) internal successors, (121248), 78804 states have internal predecessors, (121248), 21636 states have call successors, (21636), 2052 states have call predecessors, (21636), 4561 states have return successors, (30664), 22874 states have call predecessors, (30664), 21631 states have call successors, (30664) [2024-12-02 10:42:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102518 states to 102518 states and 173548 transitions. [2024-12-02 10:42:50,099 INFO L78 Accepts]: Start accepts. Automaton has 102518 states and 173548 transitions. Word has length 170 [2024-12-02 10:42:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:50,099 INFO L471 AbstractCegarLoop]: Abstraction has 102518 states and 173548 transitions. [2024-12-02 10:42:50,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:42:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 102518 states and 173548 transitions. [2024-12-02 10:42:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 10:42:50,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:50,103 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:42:50,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 10:42:50,103 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:50,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2009834613, now seen corresponding path program 1 times [2024-12-02 10:42:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:50,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096314475] [2024-12-02 10:42:50,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:42:50,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:50,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096314475] [2024-12-02 10:42:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096314475] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:50,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:50,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 10:42:50,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385718849] [2024-12-02 10:42:50,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:50,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:42:50,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:50,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:42:50,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:42:50,298 INFO L87 Difference]: Start difference. First operand 102518 states and 173548 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:43:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:06,449 INFO L93 Difference]: Finished difference Result 339605 states and 579704 transitions. [2024-12-02 10:43:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 10:43:06,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 170 [2024-12-02 10:43:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:07,577 INFO L225 Difference]: With dead ends: 339605 [2024-12-02 10:43:07,577 INFO L226 Difference]: Without dead ends: 237269 [2024-12-02 10:43:07,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-12-02 10:43:07,868 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 2496 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 5576 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 6147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 5576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:07,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 2748 Invalid, 6147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 5576 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 10:43:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237269 states. [2024-12-02 10:43:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237269 to 228483. [2024-12-02 10:43:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228483 states, 170776 states have (on average 1.5856033634702769) internal successors, (270783), 176033 states have internal predecessors, (270783), 46989 states have call successors, (46989), 4586 states have call predecessors, (46989), 10717 states have return successors, (68456), 50289 states have call predecessors, (68456), 46984 states have call successors, (68456) [2024-12-02 10:43:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228483 states to 228483 states and 386228 transitions. [2024-12-02 10:43:22,844 INFO L78 Accepts]: Start accepts. Automaton has 228483 states and 386228 transitions. Word has length 170 [2024-12-02 10:43:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:22,845 INFO L471 AbstractCegarLoop]: Abstraction has 228483 states and 386228 transitions. [2024-12-02 10:43:22,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 10:43:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 228483 states and 386228 transitions. [2024-12-02 10:43:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 10:43:22,855 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:22,855 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:22,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 10:43:22,856 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:43:22,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1580436745, now seen corresponding path program 1 times [2024-12-02 10:43:22,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:22,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412631372] [2024-12-02 10:43:22,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:22,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:43:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412631372] [2024-12-02 10:43:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412631372] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:23,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:43:23,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:43:23,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679056821] [2024-12-02 10:43:23,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:23,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:43:23,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:23,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:43:23,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:43:23,064 INFO L87 Difference]: Start difference. First operand 228483 states and 386228 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 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 10:43:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:37,185 INFO L93 Difference]: Finished difference Result 460020 states and 779523 transitions. [2024-12-02 10:43:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:43:37,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 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 175 [2024-12-02 10:43:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:38,385 INFO L225 Difference]: With dead ends: 460020 [2024-12-02 10:43:38,385 INFO L226 Difference]: Without dead ends: 231719 [2024-12-02 10:43:39,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:43:39,254 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 0 mSDsluCounter, 4398 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5284 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:43:39,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5284 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:43:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231719 states. [2024-12-02 10:43:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231719 to 230739. [2024-12-02 10:43:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230739 states, 172444 states have (on average 1.5799389946881306) internal successors, (272451), 177602 states have internal predecessors, (272451), 46989 states have call successors, (46989), 4586 states have call predecessors, (46989), 11305 states have return successors, (70124), 50976 states have call predecessors, (70124), 46984 states have call successors, (70124) [2024-12-02 10:43:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230739 states to 230739 states and 389564 transitions. [2024-12-02 10:43:55,400 INFO L78 Accepts]: Start accepts. Automaton has 230739 states and 389564 transitions. Word has length 175 [2024-12-02 10:43:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:55,401 INFO L471 AbstractCegarLoop]: Abstraction has 230739 states and 389564 transitions. [2024-12-02 10:43:55,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 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 10:43:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 230739 states and 389564 transitions. [2024-12-02 10:43:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 10:43:55,407 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:55,407 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:55,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 10:43:55,407 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:43:55,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1045627132, now seen corresponding path program 1 times [2024-12-02 10:43:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:55,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796389061] [2024-12-02 10:43:55,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:55,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:43:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:43:55,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:43:55,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796389061] [2024-12-02 10:43:55,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796389061] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:55,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:43:55,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:43:55,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785433138] [2024-12-02 10:43:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:55,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:43:55,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:55,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:43:55,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:43:55,571 INFO L87 Difference]: Start difference. First operand 230739 states and 389564 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 10:44:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:44:10,962 INFO L93 Difference]: Finished difference Result 461306 states and 779070 transitions. [2024-12-02 10:44:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:44:10,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 176 [2024-12-02 10:44:10,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:44:12,212 INFO L225 Difference]: With dead ends: 461306 [2024-12-02 10:44:12,212 INFO L226 Difference]: Without dead ends: 230749 [2024-12-02 10:44:12,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:44:12,753 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 3 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:44:12,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2654 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:44:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230749 states. [2024-12-02 10:44:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230749 to 230699. [2024-12-02 10:44:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230699 states, 172419 states have (on average 1.579936085930205) internal successors, (272411), 177587 states have internal predecessors, (272411), 46974 states have call successors, (46974), 4586 states have call predecessors, (46974), 11305 states have return successors, (70084), 50951 states have call predecessors, (70084), 46969 states have call successors, (70084) [2024-12-02 10:44:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230699 states to 230699 states and 389469 transitions. [2024-12-02 10:44:29,682 INFO L78 Accepts]: Start accepts. Automaton has 230699 states and 389469 transitions. Word has length 176 [2024-12-02 10:44:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:44:29,683 INFO L471 AbstractCegarLoop]: Abstraction has 230699 states and 389469 transitions. [2024-12-02 10:44:29,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 10:44:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 230699 states and 389469 transitions. [2024-12-02 10:44:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 10:44:29,687 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:44:29,687 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:29,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 10:44:29,687 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:44:29,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:44:29,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1018539458, now seen corresponding path program 1 times [2024-12-02 10:44:29,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:44:29,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099466855] [2024-12-02 10:44:29,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:44:29,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:44:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:44:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 10:44:29,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:44:29,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099466855] [2024-12-02 10:44:29,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099466855] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:44:29,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:44:29,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:44:29,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423304261] [2024-12-02 10:44:29,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:44:29,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:44:29,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:44:29,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:44:29,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:44:29,851 INFO L87 Difference]: Start difference. First operand 230699 states and 389469 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (20), 2 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 10:44:45,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:44:45,908 INFO L93 Difference]: Finished difference Result 463864 states and 784819 transitions. [2024-12-02 10:44:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:44:45,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (20), 2 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 176 [2024-12-02 10:44:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:44:46,900 INFO L225 Difference]: With dead ends: 463864 [2024-12-02 10:44:46,900 INFO L226 Difference]: Without dead ends: 233347 [2024-12-02 10:44:47,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:44:47,490 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 0 mSDsluCounter, 4408 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:44:47,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5297 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:44:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233347 states. [2024-12-02 10:45:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233347 to 230993. [2024-12-02 10:45:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230993 states, 172713 states have (on average 1.5789488920926624) internal successors, (272705), 177587 states have internal predecessors, (272705), 46974 states have call successors, (46974), 4586 states have call predecessors, (46974), 11305 states have return successors, (70084), 51245 states have call predecessors, (70084), 46969 states have call successors, (70084) [2024-12-02 10:45:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230993 states to 230993 states and 389763 transitions. [2024-12-02 10:45:04,698 INFO L78 Accepts]: Start accepts. Automaton has 230993 states and 389763 transitions. Word has length 176 [2024-12-02 10:45:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:45:04,698 INFO L471 AbstractCegarLoop]: Abstraction has 230993 states and 389763 transitions. [2024-12-02 10:45:04,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (20), 2 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 10:45:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 230993 states and 389763 transitions. [2024-12-02 10:45:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 10:45:04,703 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:45:04,704 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:04,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 10:45:04,704 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:45:04,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:45:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1979608727, now seen corresponding path program 1 times [2024-12-02 10:45:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:45:04,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003561063] [2024-12-02 10:45:04,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:45:04,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:45:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:45:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 10:45:05,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:45:05,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003561063] [2024-12-02 10:45:05,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003561063] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:45:05,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:45:05,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 10:45:05,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797195305] [2024-12-02 10:45:05,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:45:05,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:45:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:45:05,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:45:05,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:45:05,287 INFO L87 Difference]: Start difference. First operand 230993 states and 389763 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-12-02 10:45:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:45:42,884 INFO L93 Difference]: Finished difference Result 744892 states and 1274492 transitions. [2024-12-02 10:45:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:45:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 184 [2024-12-02 10:45:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:45:45,836 INFO L225 Difference]: With dead ends: 744892 [2024-12-02 10:45:45,836 INFO L226 Difference]: Without dead ends: 514081 [2024-12-02 10:45:47,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:45:47,073 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 3504 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3666 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 3933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:45:47,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3666 Valid, 1703 Invalid, 3933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 10:45:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514081 states. [2024-12-02 10:46:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514081 to 512292. [2024-12-02 10:46:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512292 states, 379241 states have (on average 1.5677207896825502) internal successors, (594544), 391274 states have internal predecessors, (594544), 107012 states have call successors, (107012), 10372 states have call predecessors, (107012), 26038 states have return successors, (167469), 116741 states have call predecessors, (167469), 107007 states have call successors, (167469) [2024-12-02 10:46:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512292 states to 512292 states and 869025 transitions. [2024-12-02 10:46:28,449 INFO L78 Accepts]: Start accepts. Automaton has 512292 states and 869025 transitions. Word has length 184 [2024-12-02 10:46:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:46:28,449 INFO L471 AbstractCegarLoop]: Abstraction has 512292 states and 869025 transitions. [2024-12-02 10:46:28,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-12-02 10:46:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 512292 states and 869025 transitions. [2024-12-02 10:46:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 10:46:28,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:46:28,459 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:28,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 10:46:28,459 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:46:28,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:46:28,460 INFO L85 PathProgramCache]: Analyzing trace with hash -410250754, now seen corresponding path program 1 times [2024-12-02 10:46:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:46:28,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645939766] [2024-12-02 10:46:28,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:46:28,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:46:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:46:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 10:46:29,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:46:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645939766] [2024-12-02 10:46:29,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645939766] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:46:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484917378] [2024-12-02 10:46:29,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:46:29,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:46:29,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:46:29,072 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:46:29,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ec4a72-b8bd-4d14-bca7-ab9896ec6f07/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 10:46:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:46:29,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:46:29,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:46:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 10:46:29,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:46:29,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484917378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:46:29,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:46:29,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-12-02 10:46:29,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970421434] [2024-12-02 10:46:29,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:46:29,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:46:29,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:46:29,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:46:29,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:46:29,603 INFO L87 Difference]: Start difference. First operand 512292 states and 869025 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 10:47:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:47:06,753 INFO L93 Difference]: Finished difference Result 1030509 states and 1771259 transitions. [2024-12-02 10:47:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:47:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 186 [2024-12-02 10:47:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:47:10,107 INFO L225 Difference]: With dead ends: 1030509 [2024-12-02 10:47:10,107 INFO L226 Difference]: Without dead ends: 518140 [2024-12-02 10:47:12,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 187 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 10:47:12,062 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 14 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:47:12,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2588 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:47:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518140 states.