./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:55:08,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:55:08,232 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:55:08,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:55:08,238 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:55:08,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:55:08,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:55:08,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:55:08,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:55:08,286 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:55:08,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:55:08,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:55:08,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:55:08,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:55:08,286 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:55:08,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:55:08,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:55:08,287 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:55:08,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:55:08,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:55:08,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:55:08,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:55:08,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:55:08,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:55:08,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:55:08,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:55:08,288 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:55:08,288 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:55:08,288 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:55:08,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:55:08,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:55:08,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:55:08,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:55:08,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:55:08,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:55:08,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:55:08,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:55:08,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:55:08,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:55:08,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:55:08,290 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:55:08,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:55:08,290 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:55:08,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:55:08,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:55:08,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:55:08,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:55:08,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:55:08,290 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_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 [2024-11-24 01:55:08,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:55:08,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:55:08,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:55:08,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:55:08,636 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:55:08,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2024-11-24 01:55:11,632 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/data/c17402a67/6c3b12ce39e747aca0a30b7b10a8f071/FLAG271bb3165 [2024-11-24 01:55:12,111 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:55:12,112 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2024-11-24 01:55:12,134 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/data/c17402a67/6c3b12ce39e747aca0a30b7b10a8f071/FLAG271bb3165 [2024-11-24 01:55:12,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/data/c17402a67/6c3b12ce39e747aca0a30b7b10a8f071 [2024-11-24 01:55:12,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:55:12,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:55:12,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:55:12,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:55:12,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:55:12,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:55:12" (1/1) ... [2024-11-24 01:55:12,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae7a7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:12, skipping insertion in model container [2024-11-24 01:55:12,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:55:12" (1/1) ... [2024-11-24 01:55:12,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:55:12,463 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_014fdf9e-9918-4f50-8ec7-98e94530b6b1/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2024-11-24 01:55:12,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:55:12,918 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:55:12,928 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-24 01:55:12,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2024-11-24 01:55:12,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [423] [2024-11-24 01:55:12,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [517] [2024-11-24 01:55:12,930 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [638] [2024-11-24 01:55:12,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1306] [2024-11-24 01:55:12,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1664] [2024-11-24 01:55:12,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1679] [2024-11-24 01:55:12,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1714] [2024-11-24 01:55:12,931 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3329] [2024-11-24 01:55:12,935 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_014fdf9e-9918-4f50-8ec7-98e94530b6b1/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c[1546,1559] [2024-11-24 01:55:13,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:55:13,148 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:55:13,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13 WrapperNode [2024-11-24 01:55:13,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:55:13,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:55:13,151 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:55:13,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:55:13,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,274 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 915 [2024-11-24 01:55:13,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:55:13,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:55:13,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:55:13,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:55:13,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,360 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]. [2024-11-24 01:55:13,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,400 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:55:13,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:55:13,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:55:13,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:55:13,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (1/1) ... [2024-11-24 01:55:13,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:55:13,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:13,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:13,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:55:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-24 01:55:13,570 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-24 01:55:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:55:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-24 01:55:13,571 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-24 01:55:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-24 01:55:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-24 01:55:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-24 01:55:13,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-24 01:55:13,573 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-24 01:55:13,573 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-24 01:55:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-24 01:55:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-24 01:55:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-24 01:55:13,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-24 01:55:13,574 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-24 01:55:13,577 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-24 01:55:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-24 01:55:13,577 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-24 01:55:13,577 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-24 01:55:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-24 01:55:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-24 01:55:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-24 01:55:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-24 01:55:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-24 01:55:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-24 01:55:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-24 01:55:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-24 01:55:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-24 01:55:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-24 01:55:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-24 01:55:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-24 01:55:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-24 01:55:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-24 01:55:13,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-24 01:55:13,578 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-24 01:55:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-24 01:55:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-24 01:55:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-24 01:55:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-24 01:55:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-24 01:55:13,579 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:55:13,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:55:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 01:55:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 01:55:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 01:55:13,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 01:55:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 01:55:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 01:55:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 01:55:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-24 01:55:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-24 01:55:13,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-24 01:55:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-24 01:55:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-24 01:55:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-24 01:55:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-24 01:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-24 01:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-24 01:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-24 01:55:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-24 01:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-24 01:55:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-24 01:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-24 01:55:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-24 01:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-24 01:55:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-24 01:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:55:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:55:13,585 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-24 01:55:13,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-24 01:55:13,851 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:55:13,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:55:15,625 INFO L? ?]: Removed 494 outVars from TransFormulas that were not future-live. [2024-11-24 01:55:15,625 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:55:15,668 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:55:15,672 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-24 01:55:15,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:55:15 BoogieIcfgContainer [2024-11-24 01:55:15,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:55:15,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:55:15,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:55:15,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:55:15,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:55:12" (1/3) ... [2024-11-24 01:55:15,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3307b162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:55:15, skipping insertion in model container [2024-11-24 01:55:15,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:13" (2/3) ... [2024-11-24 01:55:15,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3307b162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:55:15, skipping insertion in model container [2024-11-24 01:55:15,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:55:15" (3/3) ... [2024-11-24 01:55:15,690 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2024-11-24 01:55:15,710 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:55:15,714 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product31.cil.c that has 29 procedures, 625 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-24 01:55:15,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:55:15,849 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;@19634cd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:55:15,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:55:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 625 states, 487 states have (on average 1.6817248459958931) internal successors, (819), 505 states have internal predecessors, (819), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-24 01:55:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-24 01:55:15,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:15,919 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:15,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:15,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1539943334, now seen corresponding path program 1 times [2024-11-24 01:55:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755663928] [2024-11-24 01:55:15,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:15,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 01:55:17,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:17,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755663928] [2024-11-24 01:55:17,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755663928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:17,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975565130] [2024-11-24 01:55:17,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:17,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:17,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:17,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:17,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:55:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:17,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:55:17,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:55:17,776 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:17,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975565130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:17,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:17,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-24 01:55:17,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445755636] [2024-11-24 01:55:17,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:17,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:17,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:17,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:17,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:55:17,821 INFO L87 Difference]: Start difference. First operand has 625 states, 487 states have (on average 1.6817248459958931) internal successors, (819), 505 states have internal predecessors, (819), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:18,167 INFO L93 Difference]: Finished difference Result 1249 states and 2086 transitions. [2024-11-24 01:55:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:55:18,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2024-11-24 01:55:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:18,201 INFO L225 Difference]: With dead ends: 1249 [2024-11-24 01:55:18,202 INFO L226 Difference]: Without dead ends: 624 [2024-11-24 01:55:18,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:55:18,225 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 17 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:18,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3022 Invalid, 61 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-24 01:55:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2024-11-24 01:55:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 488 states have (on average 1.665983606557377) internal successors, (813), 504 states have internal predecessors, (813), 108 states have call successors, (108), 29 states have call predecessors, (108), 27 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-24 01:55:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1026 transitions. [2024-11-24 01:55:18,375 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1026 transitions. Word has length 131 [2024-11-24 01:55:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:18,377 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 1026 transitions. [2024-11-24 01:55:18,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1026 transitions. [2024-11-24 01:55:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-24 01:55:18,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:18,400 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:18,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:55:18,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:55:18,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:18,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash -890254002, now seen corresponding path program 1 times [2024-11-24 01:55:18,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:18,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574220237] [2024-11-24 01:55:18,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:18,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:19,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574220237] [2024-11-24 01:55:19,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574220237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:19,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214190441] [2024-11-24 01:55:19,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:19,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:19,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:19,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:19,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:55:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:19,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:55:19,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:55:19,828 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214190441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:19,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:19,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-24 01:55:19,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824322822] [2024-11-24 01:55:19,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:19,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:55:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:19,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:55:19,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:55:19,830 INFO L87 Difference]: Start difference. First operand 624 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:20,084 INFO L93 Difference]: Finished difference Result 1254 states and 2066 transitions. [2024-11-24 01:55:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:55:20,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2024-11-24 01:55:20,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:20,095 INFO L225 Difference]: With dead ends: 1254 [2024-11-24 01:55:20,095 INFO L226 Difference]: Without dead ends: 640 [2024-11-24 01:55:20,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:55:20,102 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 90 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5902 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:20,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5902 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-24 01:55:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2024-11-24 01:55:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 498 states have (on average 1.6626506024096386) internal successors, (828), 516 states have internal predecessors, (828), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2024-11-24 01:55:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1048 transitions. [2024-11-24 01:55:20,178 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1048 transitions. Word has length 133 [2024-11-24 01:55:20,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:20,180 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1048 transitions. [2024-11-24 01:55:20,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1048 transitions. [2024-11-24 01:55:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-24 01:55:20,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:20,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:20,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:55:20,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:20,393 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:20,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:20,394 INFO L85 PathProgramCache]: Analyzing trace with hash -393674420, now seen corresponding path program 1 times [2024-11-24 01:55:20,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:20,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876156729] [2024-11-24 01:55:20,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:20,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:20,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876156729] [2024-11-24 01:55:20,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876156729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:20,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824607193] [2024-11-24 01:55:20,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:20,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:20,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:20,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:20,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:55:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:21,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:55:21,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:55:21,413 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:21,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824607193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:21,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:21,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-24 01:55:21,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757700197] [2024-11-24 01:55:21,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:21,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:55:21,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:21,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:55:21,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:55:21,415 INFO L87 Difference]: Start difference. First operand 637 states and 1048 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:21,625 INFO L93 Difference]: Finished difference Result 1274 states and 2099 transitions. [2024-11-24 01:55:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:55:21,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2024-11-24 01:55:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:21,632 INFO L225 Difference]: With dead ends: 1274 [2024-11-24 01:55:21,632 INFO L226 Difference]: Without dead ends: 649 [2024-11-24 01:55:21,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:55:21,637 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 101 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:21,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 5890 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-24 01:55:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 637. [2024-11-24 01:55:21,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 498 states have (on average 1.6626506024096386) internal successors, (828), 516 states have internal predecessors, (828), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2024-11-24 01:55:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1048 transitions. [2024-11-24 01:55:21,678 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1048 transitions. Word has length 134 [2024-11-24 01:55:21,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:21,678 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1048 transitions. [2024-11-24 01:55:21,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1048 transitions. [2024-11-24 01:55:21,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-24 01:55:21,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:21,685 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:21,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:55:21,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:21,886 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:21,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:21,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1477525374, now seen corresponding path program 1 times [2024-11-24 01:55:21,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:21,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416518600] [2024-11-24 01:55:21,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:21,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 01:55:22,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:22,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416518600] [2024-11-24 01:55:22,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416518600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:22,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999254080] [2024-11-24 01:55:22,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:22,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:22,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:22,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:22,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:55:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:22,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:55:22,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:55:22,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999254080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:22,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:22,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:55:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512534937] [2024-11-24 01:55:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:22,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:22,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:22,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:55:22,521 INFO L87 Difference]: Start difference. First operand 637 states and 1048 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:22,657 INFO L93 Difference]: Finished difference Result 1277 states and 2102 transitions. [2024-11-24 01:55:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:55:22,658 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2024-11-24 01:55:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:22,664 INFO L225 Difference]: With dead ends: 1277 [2024-11-24 01:55:22,664 INFO L226 Difference]: Without dead ends: 648 [2024-11-24 01:55:22,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:22,669 INFO L435 NwaCegarLoop]: 1000 mSDtfsCounter, 12 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:22,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2991 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-24 01:55:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2024-11-24 01:55:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 506 states have (on average 1.6541501976284585) internal successors, (837), 524 states have internal predecessors, (837), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2024-11-24 01:55:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1056 transitions. [2024-11-24 01:55:22,709 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1056 transitions. Word has length 134 [2024-11-24 01:55:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:22,710 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 1056 transitions. [2024-11-24 01:55:22,710 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, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1056 transitions. [2024-11-24 01:55:22,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-24 01:55:22,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:22,716 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:22,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:55:22,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:22,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:22,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash 422781546, now seen corresponding path program 1 times [2024-11-24 01:55:22,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:22,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039692770] [2024-11-24 01:55:22,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:22,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:23,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:23,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039692770] [2024-11-24 01:55:23,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039692770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:23,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675894122] [2024-11-24 01:55:23,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:23,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:23,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:23,218 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:23,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:55:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:23,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:55:23,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:55:23,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:23,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675894122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:23,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:23,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-24 01:55:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389846108] [2024-11-24 01:55:23,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:23,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:55:23,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:23,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:55:23,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:55:23,752 INFO L87 Difference]: Start difference. First operand 646 states and 1056 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:23,940 INFO L93 Difference]: Finished difference Result 1283 states and 2102 transitions. [2024-11-24 01:55:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:55:23,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2024-11-24 01:55:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:23,948 INFO L225 Difference]: With dead ends: 1283 [2024-11-24 01:55:23,948 INFO L226 Difference]: Without dead ends: 660 [2024-11-24 01:55:23,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:55:23,953 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 112 mSDsluCounter, 4879 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 5878 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:23,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 5878 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:23,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-24 01:55:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 646. [2024-11-24 01:55:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 506 states have (on average 1.6541501976284585) internal successors, (837), 524 states have internal predecessors, (837), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2024-11-24 01:55:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1056 transitions. [2024-11-24 01:55:24,004 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1056 transitions. Word has length 135 [2024-11-24 01:55:24,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:24,004 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 1056 transitions. [2024-11-24 01:55:24,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1056 transitions. [2024-11-24 01:55:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-24 01:55:24,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:24,014 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:24,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:55:24,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:24,215 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:24,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1729496472, now seen corresponding path program 1 times [2024-11-24 01:55:24,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:24,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958423162] [2024-11-24 01:55:24,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:24,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 01:55:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958423162] [2024-11-24 01:55:24,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958423162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043561894] [2024-11-24 01:55:24,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:24,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:24,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:24,453 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:24,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:55:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:24,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:55:24,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:55:24,895 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:24,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043561894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:24,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:24,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-24 01:55:24,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918116725] [2024-11-24 01:55:24,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:24,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:24,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:24,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:24,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:55:24,898 INFO L87 Difference]: Start difference. First operand 646 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:25,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:25,228 INFO L93 Difference]: Finished difference Result 1341 states and 2213 transitions. [2024-11-24 01:55:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:55:25,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2024-11-24 01:55:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:25,234 INFO L225 Difference]: With dead ends: 1341 [2024-11-24 01:55:25,235 INFO L226 Difference]: Without dead ends: 718 [2024-11-24 01:55:25,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:55:25,239 INFO L435 NwaCegarLoop]: 986 mSDtfsCounter, 119 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:25,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2881 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:55:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-24 01:55:25,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 691. [2024-11-24 01:55:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6745454545454546) internal successors, (921), 568 states have internal predecessors, (921), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-24 01:55:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1139 transitions. [2024-11-24 01:55:25,277 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1139 transitions. Word has length 136 [2024-11-24 01:55:25,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:25,277 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1139 transitions. [2024-11-24 01:55:25,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:25,278 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1139 transitions. [2024-11-24 01:55:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 01:55:25,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:25,284 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:25,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:55:25,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:25,484 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:25,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1521314598, now seen corresponding path program 1 times [2024-11-24 01:55:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695645607] [2024-11-24 01:55:25,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695645607] [2024-11-24 01:55:25,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695645607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672818861] [2024-11-24 01:55:25,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:25,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:25,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:25,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:25,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:55:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:26,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:55:26,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:55:26,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:26,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672818861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:26,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:26,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 01:55:26,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806777861] [2024-11-24 01:55:26,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:26,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:55:26,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:26,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:55:26,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:55:26,304 INFO L87 Difference]: Start difference. First operand 691 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:26,586 INFO L93 Difference]: Finished difference Result 1385 states and 2285 transitions. [2024-11-24 01:55:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:55:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2024-11-24 01:55:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:26,594 INFO L225 Difference]: With dead ends: 1385 [2024-11-24 01:55:26,595 INFO L226 Difference]: Without dead ends: 717 [2024-11-24 01:55:26,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:55:26,601 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 95 mSDsluCounter, 5837 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6826 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:26,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6826 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:55:26,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-24 01:55:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 691. [2024-11-24 01:55:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6745454545454546) internal successors, (921), 568 states have internal predecessors, (921), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-24 01:55:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1139 transitions. [2024-11-24 01:55:26,662 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1139 transitions. Word has length 137 [2024-11-24 01:55:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:26,663 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1139 transitions. [2024-11-24 01:55:26,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1139 transitions. [2024-11-24 01:55:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-24 01:55:26,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:26,671 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:26,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:55:26,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-24 01:55:26,872 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:26,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1712500486, now seen corresponding path program 1 times [2024-11-24 01:55:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:26,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811884754] [2024-11-24 01:55:26,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:27,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:27,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811884754] [2024-11-24 01:55:27,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811884754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:27,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048635478] [2024-11-24 01:55:27,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:27,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:27,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:27,095 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:27,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:55:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:27,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:55:27,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:55:27,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:27,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048635478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:27,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:27,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 01:55:27,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363799574] [2024-11-24 01:55:27,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:27,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:55:27,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:27,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:55:27,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:55:27,604 INFO L87 Difference]: Start difference. First operand 691 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:27,869 INFO L93 Difference]: Finished difference Result 1385 states and 2285 transitions. [2024-11-24 01:55:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:55:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2024-11-24 01:55:27,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:27,877 INFO L225 Difference]: With dead ends: 1385 [2024-11-24 01:55:27,877 INFO L226 Difference]: Without dead ends: 717 [2024-11-24 01:55:27,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:55:27,883 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 105 mSDsluCounter, 5825 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6814 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:27,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6814 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:55:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-24 01:55:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 691. [2024-11-24 01:55:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6745454545454546) internal successors, (921), 568 states have internal predecessors, (921), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-24 01:55:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1139 transitions. [2024-11-24 01:55:27,927 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1139 transitions. Word has length 138 [2024-11-24 01:55:27,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:27,927 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1139 transitions. [2024-11-24 01:55:27,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1139 transitions. [2024-11-24 01:55:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 01:55:27,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:27,933 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:27,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:55:28,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:28,135 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:28,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash -669448801, now seen corresponding path program 1 times [2024-11-24 01:55:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740117550] [2024-11-24 01:55:28,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:28,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:28,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:28,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740117550] [2024-11-24 01:55:28,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740117550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:28,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63224443] [2024-11-24 01:55:28,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:28,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:28,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:28,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:28,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:55:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:28,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:55:28,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-24 01:55:28,881 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:28,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63224443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:28,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:28,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 01:55:28,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615386893] [2024-11-24 01:55:28,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:28,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:55:28,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:28,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:55:28,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:55:28,884 INFO L87 Difference]: Start difference. First operand 691 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:29,137 INFO L93 Difference]: Finished difference Result 1376 states and 2270 transitions. [2024-11-24 01:55:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:55:29,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2024-11-24 01:55:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:29,147 INFO L225 Difference]: With dead ends: 1376 [2024-11-24 01:55:29,147 INFO L226 Difference]: Without dead ends: 708 [2024-11-24 01:55:29,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:55:29,153 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 115 mSDsluCounter, 5813 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6802 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:29,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6802 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:55:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-24 01:55:29,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 691. [2024-11-24 01:55:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6745454545454546) internal successors, (921), 568 states have internal predecessors, (921), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-24 01:55:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1139 transitions. [2024-11-24 01:55:29,192 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1139 transitions. Word has length 139 [2024-11-24 01:55:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:29,193 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1139 transitions. [2024-11-24 01:55:29,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:29,193 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1139 transitions. [2024-11-24 01:55:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-24 01:55:29,199 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:29,199 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:29,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:55:29,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-24 01:55:29,400 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:29,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash -33985283, now seen corresponding path program 1 times [2024-11-24 01:55:29,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:29,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299064373] [2024-11-24 01:55:29,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:29,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:55:29,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:29,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299064373] [2024-11-24 01:55:29,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299064373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:29,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743983763] [2024-11-24 01:55:29,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:29,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:29,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:29,521 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:29,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:55:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:29,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:55:29,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 01:55:29,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:29,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743983763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:29,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:29,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:55:29,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227226479] [2024-11-24 01:55:29,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:29,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:29,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:29,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:55:29,921 INFO L87 Difference]: Start difference. First operand 691 states and 1139 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:30,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:30,027 INFO L93 Difference]: Finished difference Result 1348 states and 2230 transitions. [2024-11-24 01:55:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:55:30,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-24 01:55:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:30,035 INFO L225 Difference]: With dead ends: 1348 [2024-11-24 01:55:30,035 INFO L226 Difference]: Without dead ends: 691 [2024-11-24 01:55:30,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:30,040 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 20 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:30,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2985 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:55:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-24 01:55:30,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2024-11-24 01:55:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 550 states have (on average 1.6654545454545455) internal successors, (916), 568 states have internal predecessors, (916), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2024-11-24 01:55:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1134 transitions. [2024-11-24 01:55:30,080 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1134 transitions. Word has length 139 [2024-11-24 01:55:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:30,080 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1134 transitions. [2024-11-24 01:55:30,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1134 transitions. [2024-11-24 01:55:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-24 01:55:30,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:30,086 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:30,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:55:30,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:30,290 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:30,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:30,291 INFO L85 PathProgramCache]: Analyzing trace with hash 947141029, now seen corresponding path program 1 times [2024-11-24 01:55:30,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:30,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565162117] [2024-11-24 01:55:30,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:30,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:55:30,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:30,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565162117] [2024-11-24 01:55:30,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565162117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:30,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274666652] [2024-11-24 01:55:30,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:30,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:30,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:30,416 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:30,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:55:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:30,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:55:30,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:55:30,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274666652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:30,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:30,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-24 01:55:30,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202272588] [2024-11-24 01:55:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:30,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:55:30,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:30,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:55:30,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:55:30,886 INFO L87 Difference]: Start difference. First operand 691 states and 1134 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:31,090 INFO L93 Difference]: Finished difference Result 1316 states and 2162 transitions. [2024-11-24 01:55:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:55:31,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2024-11-24 01:55:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:31,098 INFO L225 Difference]: With dead ends: 1316 [2024-11-24 01:55:31,099 INFO L226 Difference]: Without dead ends: 717 [2024-11-24 01:55:31,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:55:31,103 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 90 mSDsluCounter, 4920 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5922 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:31,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5922 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:31,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-24 01:55:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 704. [2024-11-24 01:55:31,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6625) internal successors, (931), 580 states have internal predecessors, (931), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-24 01:55:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1155 transitions. [2024-11-24 01:55:31,141 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1155 transitions. Word has length 140 [2024-11-24 01:55:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:31,142 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1155 transitions. [2024-11-24 01:55:31,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1155 transitions. [2024-11-24 01:55:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 01:55:31,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:31,147 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:31,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:31,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:31,348 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:31,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:31,348 INFO L85 PathProgramCache]: Analyzing trace with hash 492880895, now seen corresponding path program 1 times [2024-11-24 01:55:31,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:31,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573149289] [2024-11-24 01:55:31,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:31,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:55:31,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:31,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573149289] [2024-11-24 01:55:31,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573149289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:31,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023584817] [2024-11-24 01:55:31,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:31,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:31,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:31,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:31,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:55:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:31,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:55:31,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:55:31,917 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:31,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023584817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:31,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:31,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-24 01:55:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049825467] [2024-11-24 01:55:31,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:31,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:55:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:31,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:55:31,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:55:31,919 INFO L87 Difference]: Start difference. First operand 704 states and 1155 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:32,064 INFO L93 Difference]: Finished difference Result 1325 states and 2177 transitions. [2024-11-24 01:55:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:55:32,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-24 01:55:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:32,073 INFO L225 Difference]: With dead ends: 1325 [2024-11-24 01:55:32,073 INFO L226 Difference]: Without dead ends: 726 [2024-11-24 01:55:32,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:55:32,078 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 101 mSDsluCounter, 4908 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 5910 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:32,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 5910 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-24 01:55:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 704. [2024-11-24 01:55:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6625) internal successors, (931), 580 states have internal predecessors, (931), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-24 01:55:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1155 transitions. [2024-11-24 01:55:32,119 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1155 transitions. Word has length 141 [2024-11-24 01:55:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:32,120 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1155 transitions. [2024-11-24 01:55:32,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1155 transitions. [2024-11-24 01:55:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 01:55:32,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:32,125 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:32,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:55:32,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:32,326 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:32,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1534168577, now seen corresponding path program 1 times [2024-11-24 01:55:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:32,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641365793] [2024-11-24 01:55:32,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:32,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:55:32,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641365793] [2024-11-24 01:55:32,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641365793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77424711] [2024-11-24 01:55:32,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:32,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:32,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:32,443 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:32,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:55:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:32,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:55:32,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 01:55:32,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:32,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77424711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:32,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:32,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:55:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986637050] [2024-11-24 01:55:32,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:32,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:32,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:32,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:55:32,864 INFO L87 Difference]: Start difference. First operand 704 states and 1155 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:32,934 INFO L93 Difference]: Finished difference Result 1370 states and 2260 transitions. [2024-11-24 01:55:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:55:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2024-11-24 01:55:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:32,941 INFO L225 Difference]: With dead ends: 1370 [2024-11-24 01:55:32,941 INFO L226 Difference]: Without dead ends: 704 [2024-11-24 01:55:32,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:55:32,946 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 2 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:32,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2994 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:55:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-24 01:55:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2024-11-24 01:55:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6571428571428573) internal successors, (928), 580 states have internal predecessors, (928), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-24 01:55:32,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1152 transitions. [2024-11-24 01:55:32,986 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1152 transitions. Word has length 141 [2024-11-24 01:55:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:32,988 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1152 transitions. [2024-11-24 01:55:32,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1152 transitions. [2024-11-24 01:55:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 01:55:32,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:32,994 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:33,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:55:33,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 01:55:33,196 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:33,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1644675339, now seen corresponding path program 1 times [2024-11-24 01:55:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898836540] [2024-11-24 01:55:33,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:55:33,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898836540] [2024-11-24 01:55:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898836540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046473599] [2024-11-24 01:55:33,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:33,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:33,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:33,318 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:33,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:55:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:33,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:55:33,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:55:33,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:33,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046473599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:33,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:33,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-24 01:55:33,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828280659] [2024-11-24 01:55:33,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:33,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:55:33,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:33,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:55:33,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:55:33,835 INFO L87 Difference]: Start difference. First operand 704 states and 1152 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:34,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:34,044 INFO L93 Difference]: Finished difference Result 1328 states and 2178 transitions. [2024-11-24 01:55:34,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:55:34,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2024-11-24 01:55:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:34,051 INFO L225 Difference]: With dead ends: 1328 [2024-11-24 01:55:34,051 INFO L226 Difference]: Without dead ends: 729 [2024-11-24 01:55:34,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:55:34,055 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 96 mSDsluCounter, 5842 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6831 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:34,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6831 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:34,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-24 01:55:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 704. [2024-11-24 01:55:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6571428571428573) internal successors, (928), 580 states have internal predecessors, (928), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-24 01:55:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1152 transitions. [2024-11-24 01:55:34,093 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1152 transitions. Word has length 142 [2024-11-24 01:55:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:34,094 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1152 transitions. [2024-11-24 01:55:34,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:34,094 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1152 transitions. [2024-11-24 01:55:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-24 01:55:34,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:34,100 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:34,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:34,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 01:55:34,301 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:34,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:34,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1274569187, now seen corresponding path program 1 times [2024-11-24 01:55:34,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:34,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141710907] [2024-11-24 01:55:34,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:55:34,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:34,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141710907] [2024-11-24 01:55:34,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141710907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:34,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145622515] [2024-11-24 01:55:34,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:34,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:34,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:34,409 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:34,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:55:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:34,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:55:34,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 01:55:34,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:34,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145622515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:34,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:34,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-24 01:55:34,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994925844] [2024-11-24 01:55:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:34,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:55:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:34,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:55:34,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:55:34,891 INFO L87 Difference]: Start difference. First operand 704 states and 1152 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:35,103 INFO L93 Difference]: Finished difference Result 1319 states and 2163 transitions. [2024-11-24 01:55:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:55:35,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2024-11-24 01:55:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:35,111 INFO L225 Difference]: With dead ends: 1319 [2024-11-24 01:55:35,112 INFO L226 Difference]: Without dead ends: 720 [2024-11-24 01:55:35,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:55:35,116 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 106 mSDsluCounter, 5830 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6819 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:35,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6819 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-24 01:55:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 704. [2024-11-24 01:55:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 560 states have (on average 1.6571428571428573) internal successors, (928), 580 states have internal predecessors, (928), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-24 01:55:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1152 transitions. [2024-11-24 01:55:35,149 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1152 transitions. Word has length 143 [2024-11-24 01:55:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:35,149 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 1152 transitions. [2024-11-24 01:55:35,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1152 transitions. [2024-11-24 01:55:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-24 01:55:35,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:35,155 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:35,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 01:55:35,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 01:55:35,360 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:35,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:35,360 INFO L85 PathProgramCache]: Analyzing trace with hash -963632634, now seen corresponding path program 1 times [2024-11-24 01:55:35,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:35,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082163784] [2024-11-24 01:55:35,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:35,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:55:35,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:35,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082163784] [2024-11-24 01:55:35,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082163784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:35,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244475337] [2024-11-24 01:55:35,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:35,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:35,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:35,544 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:35,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:55:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:35,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:55:35,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:55:35,962 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:35,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244475337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:35,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:35,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:55:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133477814] [2024-11-24 01:55:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:35,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:35,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:35,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:35,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:55:35,965 INFO L87 Difference]: Start difference. First operand 704 states and 1152 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:36,199 INFO L93 Difference]: Finished difference Result 1405 states and 2312 transitions. [2024-11-24 01:55:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:55:36,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2024-11-24 01:55:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:36,206 INFO L225 Difference]: With dead ends: 1405 [2024-11-24 01:55:36,206 INFO L226 Difference]: Without dead ends: 806 [2024-11-24 01:55:36,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:36,211 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 171 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:36,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2845 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:55:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-24 01:55:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 749. [2024-11-24 01:55:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 604 states have (on average 1.6754966887417218) internal successors, (1012), 624 states have internal predecessors, (1012), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2024-11-24 01:55:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1233 transitions. [2024-11-24 01:55:36,283 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1233 transitions. Word has length 143 [2024-11-24 01:55:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:36,284 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1233 transitions. [2024-11-24 01:55:36,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1233 transitions. [2024-11-24 01:55:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-24 01:55:36,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:36,291 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:36,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:36,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 01:55:36,495 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:36,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:36,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1769676112, now seen corresponding path program 1 times [2024-11-24 01:55:36,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:36,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527104541] [2024-11-24 01:55:36,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:36,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:55:36,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:36,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527104541] [2024-11-24 01:55:36,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527104541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:36,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039267281] [2024-11-24 01:55:36,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:36,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:36,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:36,634 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:36,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:55:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:37,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:37,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:37,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:37,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039267281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:37,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:37,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:55:37,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93596109] [2024-11-24 01:55:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:37,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:55:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:37,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:55:37,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:37,208 INFO L87 Difference]: Start difference. First operand 749 states and 1233 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, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:38,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:38,008 INFO L93 Difference]: Finished difference Result 1352 states and 2254 transitions. [2024-11-24 01:55:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:55:38,009 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, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2024-11-24 01:55:38,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:38,018 INFO L225 Difference]: With dead ends: 1352 [2024-11-24 01:55:38,020 INFO L226 Difference]: Without dead ends: 757 [2024-11-24 01:55:38,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:55:38,024 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 952 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:38,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 2553 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:55:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2024-11-24 01:55:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2024-11-24 01:55:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 611 states have (on average 1.6759410801963994) internal successors, (1024), 631 states have internal predecessors, (1024), 110 states have call successors, (110), 33 states have call predecessors, (110), 35 states have return successors, (112), 105 states have call predecessors, (112), 107 states have call successors, (112) [2024-11-24 01:55:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1246 transitions. [2024-11-24 01:55:38,063 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1246 transitions. Word has length 144 [2024-11-24 01:55:38,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:38,066 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 1246 transitions. [2024-11-24 01:55:38,067 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, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1246 transitions. [2024-11-24 01:55:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 01:55:38,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:38,073 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:38,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:55:38,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 01:55:38,274 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:38,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1586343808, now seen corresponding path program 1 times [2024-11-24 01:55:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141093210] [2024-11-24 01:55:38,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:38,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 01:55:38,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:38,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141093210] [2024-11-24 01:55:38,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141093210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:38,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448116533] [2024-11-24 01:55:38,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:38,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:38,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:38,386 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:38,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 01:55:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:38,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:38,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:38,907 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448116533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:38,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:38,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:55:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140839040] [2024-11-24 01:55:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:38,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:55:38,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:38,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:55:38,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:38,909 INFO L87 Difference]: Start difference. First operand 757 states and 1246 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:39,631 INFO L93 Difference]: Finished difference Result 1368 states and 2277 transitions. [2024-11-24 01:55:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:55:39,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2024-11-24 01:55:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:39,639 INFO L225 Difference]: With dead ends: 1368 [2024-11-24 01:55:39,639 INFO L226 Difference]: Without dead ends: 765 [2024-11-24 01:55:39,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:55:39,644 INFO L435 NwaCegarLoop]: 988 mSDtfsCounter, 953 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:39,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2550 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:55:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-24 01:55:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2024-11-24 01:55:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 618 states have (on average 1.6763754045307444) internal successors, (1036), 638 states have internal predecessors, (1036), 110 states have call successors, (110), 34 states have call predecessors, (110), 36 states have return successors, (113), 105 states have call predecessors, (113), 107 states have call successors, (113) [2024-11-24 01:55:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1259 transitions. [2024-11-24 01:55:39,679 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1259 transitions. Word has length 146 [2024-11-24 01:55:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:39,680 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1259 transitions. [2024-11-24 01:55:39,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1259 transitions. [2024-11-24 01:55:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 01:55:39,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:39,685 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:39,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-24 01:55:39,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 01:55:39,886 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:39,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash -723077680, now seen corresponding path program 1 times [2024-11-24 01:55:39,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:39,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471770325] [2024-11-24 01:55:39,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-24 01:55:40,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:40,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471770325] [2024-11-24 01:55:40,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471770325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:40,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769991027] [2024-11-24 01:55:40,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:40,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:40,024 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:40,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 01:55:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:40,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:40,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:40,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:40,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769991027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:40,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:40,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:55:40,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114874757] [2024-11-24 01:55:40,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:40,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:55:40,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:40,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:55:40,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:40,546 INFO L87 Difference]: Start difference. First operand 765 states and 1259 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:41,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:41,249 INFO L93 Difference]: Finished difference Result 1384 states and 2300 transitions. [2024-11-24 01:55:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:55:41,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2024-11-24 01:55:41,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:41,256 INFO L225 Difference]: With dead ends: 1384 [2024-11-24 01:55:41,257 INFO L226 Difference]: Without dead ends: 773 [2024-11-24 01:55:41,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:55:41,261 INFO L435 NwaCegarLoop]: 985 mSDtfsCounter, 947 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2547 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:41,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 2547 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:55:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-24 01:55:41,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2024-11-24 01:55:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 625 states have (on average 1.6768) internal successors, (1048), 645 states have internal predecessors, (1048), 110 states have call successors, (110), 35 states have call predecessors, (110), 37 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2024-11-24 01:55:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1272 transitions. [2024-11-24 01:55:41,298 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1272 transitions. Word has length 148 [2024-11-24 01:55:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:41,299 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 1272 transitions. [2024-11-24 01:55:41,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1272 transitions. [2024-11-24 01:55:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-24 01:55:41,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:41,304 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:41,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-24 01:55:41,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:41,509 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:41,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:41,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1204207480, now seen corresponding path program 1 times [2024-11-24 01:55:41,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:41,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276739864] [2024-11-24 01:55:41,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:41,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 01:55:41,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:41,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276739864] [2024-11-24 01:55:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276739864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:41,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504304204] [2024-11-24 01:55:41,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:41,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:41,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:41,624 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:41,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 01:55:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:42,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:42,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:42,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:42,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504304204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:42,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:42,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-24 01:55:42,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299277622] [2024-11-24 01:55:42,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:42,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:55:42,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:42,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:55:42,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:42,171 INFO L87 Difference]: Start difference. First operand 773 states and 1272 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:42,900 INFO L93 Difference]: Finished difference Result 1400 states and 2323 transitions. [2024-11-24 01:55:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:55:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2024-11-24 01:55:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:42,906 INFO L225 Difference]: With dead ends: 1400 [2024-11-24 01:55:42,907 INFO L226 Difference]: Without dead ends: 781 [2024-11-24 01:55:42,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:55:42,911 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 925 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:42,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2544 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:55:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-11-24 01:55:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2024-11-24 01:55:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 632 states have (on average 1.6772151898734178) internal successors, (1060), 652 states have internal predecessors, (1060), 110 states have call successors, (110), 36 states have call predecessors, (110), 38 states have return successors, (115), 105 states have call predecessors, (115), 107 states have call successors, (115) [2024-11-24 01:55:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1285 transitions. [2024-11-24 01:55:42,945 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1285 transitions. Word has length 150 [2024-11-24 01:55:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:42,946 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 1285 transitions. [2024-11-24 01:55:42,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1285 transitions. [2024-11-24 01:55:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-24 01:55:42,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:42,951 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:42,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 01:55:43,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:43,152 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:43,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1396936624, now seen corresponding path program 1 times [2024-11-24 01:55:43,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859727237] [2024-11-24 01:55:43,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 01:55:43,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:43,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859727237] [2024-11-24 01:55:43,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859727237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:43,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948587609] [2024-11-24 01:55:43,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:43,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:43,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:43,255 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:43,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 01:55:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:43,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:55:43,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 01:55:43,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:43,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948587609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:43,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:43,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-24 01:55:43,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224828140] [2024-11-24 01:55:43,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:43,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:43,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:43,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:43,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:55:43,634 INFO L87 Difference]: Start difference. First operand 781 states and 1285 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:43,743 INFO L93 Difference]: Finished difference Result 1539 states and 2544 transitions. [2024-11-24 01:55:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:55:43,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2024-11-24 01:55:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:43,750 INFO L225 Difference]: With dead ends: 1539 [2024-11-24 01:55:43,750 INFO L226 Difference]: Without dead ends: 746 [2024-11-24 01:55:43,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:55:43,753 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 7 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:43,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2986 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:55:43,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-24 01:55:43,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2024-11-24 01:55:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 600 states have (on average 1.6566666666666667) internal successors, (994), 618 states have internal predecessors, (994), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2024-11-24 01:55:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1215 transitions. [2024-11-24 01:55:43,786 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1215 transitions. Word has length 152 [2024-11-24 01:55:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:43,786 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 1215 transitions. [2024-11-24 01:55:43,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1215 transitions. [2024-11-24 01:55:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 01:55:43,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:43,791 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:43,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 01:55:43,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 01:55:43,993 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:43,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:43,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1946789330, now seen corresponding path program 1 times [2024-11-24 01:55:43,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:43,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136685281] [2024-11-24 01:55:43,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:43,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:55:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:44,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136685281] [2024-11-24 01:55:44,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136685281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404904836] [2024-11-24 01:55:44,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:44,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:44,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:44,185 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:44,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 01:55:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:44,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:55:44,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-24 01:55:44,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:44,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404904836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:44,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:44,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-24 01:55:44,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413664492] [2024-11-24 01:55:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:44,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:55:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:44,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:55:44,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:44,590 INFO L87 Difference]: Start difference. First operand 746 states and 1215 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:44,726 INFO L93 Difference]: Finished difference Result 1489 states and 2424 transitions. [2024-11-24 01:55:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:55:44,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2024-11-24 01:55:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:44,733 INFO L225 Difference]: With dead ends: 1489 [2024-11-24 01:55:44,733 INFO L226 Difference]: Without dead ends: 760 [2024-11-24 01:55:44,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:55:44,738 INFO L435 NwaCegarLoop]: 1008 mSDtfsCounter, 122 mSDsluCounter, 4901 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5909 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:44,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5909 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-24 01:55:44,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 739. [2024-11-24 01:55:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 593 states have (on average 1.6492411467116357) internal successors, (978), 611 states have internal predecessors, (978), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2024-11-24 01:55:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1199 transitions. [2024-11-24 01:55:44,782 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1199 transitions. Word has length 153 [2024-11-24 01:55:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:44,782 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 1199 transitions. [2024-11-24 01:55:44,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1199 transitions. [2024-11-24 01:55:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-24 01:55:44,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:44,788 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:44,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:44,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-24 01:55:44,989 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:44,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1983977010, now seen corresponding path program 1 times [2024-11-24 01:55:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585488324] [2024-11-24 01:55:44,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:44,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:55:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585488324] [2024-11-24 01:55:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585488324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:45,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:55:45,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:55:45,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334085203] [2024-11-24 01:55:45,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:45,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:55:45,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:45,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:55:45,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:55:45,164 INFO L87 Difference]: Start difference. First operand 739 states and 1199 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:45,284 INFO L93 Difference]: Finished difference Result 1393 states and 2272 transitions. [2024-11-24 01:55:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:55:45,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 154 [2024-11-24 01:55:45,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:45,292 INFO L225 Difference]: With dead ends: 1393 [2024-11-24 01:55:45,292 INFO L226 Difference]: Without dead ends: 762 [2024-11-24 01:55:45,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:55:45,298 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 126 mSDsluCounter, 4857 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5853 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:45,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5853 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:55:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-24 01:55:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 739. [2024-11-24 01:55:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 593 states have (on average 1.6492411467116357) internal successors, (978), 611 states have internal predecessors, (978), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2024-11-24 01:55:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1199 transitions. [2024-11-24 01:55:45,333 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1199 transitions. Word has length 154 [2024-11-24 01:55:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:45,333 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 1199 transitions. [2024-11-24 01:55:45,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 01:55:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1199 transitions. [2024-11-24 01:55:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-24 01:55:45,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:45,337 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:45,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:55:45,337 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:45,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:45,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1547062338, now seen corresponding path program 1 times [2024-11-24 01:55:45,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:45,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583074171] [2024-11-24 01:55:45,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:45,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 01:55:45,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:45,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583074171] [2024-11-24 01:55:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583074171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:45,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:55:45,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:55:45,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113436933] [2024-11-24 01:55:45,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:45,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:45,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:45,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:55:45,451 INFO L87 Difference]: Start difference. First operand 739 states and 1199 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:45,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:45,518 INFO L93 Difference]: Finished difference Result 1433 states and 2341 transitions. [2024-11-24 01:55:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:55:45,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2024-11-24 01:55:45,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:45,525 INFO L225 Difference]: With dead ends: 1433 [2024-11-24 01:55:45,525 INFO L226 Difference]: Without dead ends: 697 [2024-11-24 01:55:45,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:55:45,529 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 8 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:45,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2985 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:55:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-24 01:55:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2024-11-24 01:55:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 554 states have (on average 1.6335740072202165) internal successors, (905), 570 states have internal predecessors, (905), 108 states have call successors, (108), 36 states have call predecessors, (108), 34 states have return successors, (109), 103 states have call predecessors, (109), 105 states have call successors, (109) [2024-11-24 01:55:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1122 transitions. [2024-11-24 01:55:45,558 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1122 transitions. Word has length 154 [2024-11-24 01:55:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:45,559 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1122 transitions. [2024-11-24 01:55:45,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1122 transitions. [2024-11-24 01:55:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 01:55:45,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:45,562 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:45,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:55:45,562 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:45,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1179844116, now seen corresponding path program 1 times [2024-11-24 01:55:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879147222] [2024-11-24 01:55:45,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:45,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:55:45,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879147222] [2024-11-24 01:55:45,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879147222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557848787] [2024-11-24 01:55:45,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:45,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:45,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:45,943 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:45,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 01:55:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:46,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:55:46,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:55:46,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:46,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557848787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:46,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:46,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-24 01:55:46,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465464619] [2024-11-24 01:55:46,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:46,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:55:46,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:46,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:55:46,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:55:46,513 INFO L87 Difference]: Start difference. First operand 697 states and 1122 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:47,132 INFO L93 Difference]: Finished difference Result 1957 states and 3236 transitions. [2024-11-24 01:55:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:55:47,132 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2024-11-24 01:55:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:47,142 INFO L225 Difference]: With dead ends: 1957 [2024-11-24 01:55:47,143 INFO L226 Difference]: Without dead ends: 1330 [2024-11-24 01:55:47,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:55:47,147 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 923 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:47,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 3932 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:55:47,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-11-24 01:55:47,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1320. [2024-11-24 01:55:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1048 states have (on average 1.6498091603053435) internal successors, (1729), 1080 states have internal predecessors, (1729), 206 states have call successors, (206), 66 states have call predecessors, (206), 65 states have return successors, (230), 199 states have call predecessors, (230), 202 states have call successors, (230) [2024-11-24 01:55:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2165 transitions. [2024-11-24 01:55:47,205 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2165 transitions. Word has length 155 [2024-11-24 01:55:47,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:47,205 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 2165 transitions. [2024-11-24 01:55:47,205 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:55:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2165 transitions. [2024-11-24 01:55:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 01:55:47,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:47,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:47,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:47,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 01:55:47,410 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:47,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:47,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1991027621, now seen corresponding path program 1 times [2024-11-24 01:55:47,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:47,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970685322] [2024-11-24 01:55:47,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:47,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:55:47,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:47,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970685322] [2024-11-24 01:55:47,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970685322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:47,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884871328] [2024-11-24 01:55:47,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:47,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:47,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:47,828 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:47,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 01:55:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:48,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 1443 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:55:48,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:55:48,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884871328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:48,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-24 01:55:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247835619] [2024-11-24 01:55:48,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:48,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:55:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:48,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:55:48,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:55:48,242 INFO L87 Difference]: Start difference. First operand 1320 states and 2165 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:48,353 INFO L93 Difference]: Finished difference Result 3188 states and 5307 transitions. [2024-11-24 01:55:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:55:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-11-24 01:55:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:48,369 INFO L225 Difference]: With dead ends: 3188 [2024-11-24 01:55:48,369 INFO L226 Difference]: Without dead ends: 1939 [2024-11-24 01:55:48,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:55:48,377 INFO L435 NwaCegarLoop]: 1878 mSDtfsCounter, 974 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:48,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 2878 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:55:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2024-11-24 01:55:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1320. [2024-11-24 01:55:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1048 states have (on average 1.6488549618320612) internal successors, (1728), 1080 states have internal predecessors, (1728), 206 states have call successors, (206), 66 states have call predecessors, (206), 65 states have return successors, (230), 199 states have call predecessors, (230), 202 states have call successors, (230) [2024-11-24 01:55:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2164 transitions. [2024-11-24 01:55:48,448 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2164 transitions. Word has length 160 [2024-11-24 01:55:48,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:48,449 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 2164 transitions. [2024-11-24 01:55:48,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2164 transitions. [2024-11-24 01:55:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 01:55:48,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:48,453 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:48,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-24 01:55:48,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 01:55:48,653 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:48,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1716268007, now seen corresponding path program 1 times [2024-11-24 01:55:48,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716665280] [2024-11-24 01:55:48,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:55:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716665280] [2024-11-24 01:55:48,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716665280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823812158] [2024-11-24 01:55:48,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:48,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:48,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:48,985 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:48,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-24 01:55:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:49,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:55:49,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:55:49,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823812158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:49,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-24 01:55:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588938770] [2024-11-24 01:55:49,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:49,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:55:49,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:49,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:55:49,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:55:49,475 INFO L87 Difference]: Start difference. First operand 1320 states and 2164 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:50,116 INFO L93 Difference]: Finished difference Result 1941 states and 3213 transitions. [2024-11-24 01:55:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:55:50,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-11-24 01:55:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:50,131 INFO L225 Difference]: With dead ends: 1941 [2024-11-24 01:55:50,131 INFO L226 Difference]: Without dead ends: 1938 [2024-11-24 01:55:50,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:55:50,136 INFO L435 NwaCegarLoop]: 1874 mSDtfsCounter, 947 mSDsluCounter, 5499 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 7373 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:50,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 7373 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:55:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2024-11-24 01:55:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1930. [2024-11-24 01:55:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1534 states have (on average 1.6577574967405475) internal successors, (2543), 1578 states have internal predecessors, (2543), 302 states have call successors, (302), 95 states have call predecessors, (302), 93 states have return successors, (346), 295 states have call predecessors, (346), 297 states have call successors, (346) [2024-11-24 01:55:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3191 transitions. [2024-11-24 01:55:50,227 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3191 transitions. Word has length 160 [2024-11-24 01:55:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:50,228 INFO L471 AbstractCegarLoop]: Abstraction has 1930 states and 3191 transitions. [2024-11-24 01:55:50,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3191 transitions. [2024-11-24 01:55:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 01:55:50,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:50,232 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:50,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-24 01:55:50,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 01:55:50,433 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:50,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:50,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2063414179, now seen corresponding path program 1 times [2024-11-24 01:55:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:50,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428811119] [2024-11-24 01:55:50,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:55:50,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:50,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428811119] [2024-11-24 01:55:50,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428811119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:50,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840841642] [2024-11-24 01:55:50,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:50,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:50,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:50,783 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:50,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 01:55:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:51,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:55:51,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-24 01:55:51,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:51,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840841642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:51,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:51,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 01:55:51,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819923132] [2024-11-24 01:55:51,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:51,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:55:51,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:51,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:55:51,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:55:51,217 INFO L87 Difference]: Start difference. First operand 1930 states and 3191 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:51,339 INFO L93 Difference]: Finished difference Result 3808 states and 6364 transitions. [2024-11-24 01:55:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:55:51,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2024-11-24 01:55:51,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:51,354 INFO L225 Difference]: With dead ends: 3808 [2024-11-24 01:55:51,355 INFO L226 Difference]: Without dead ends: 1948 [2024-11-24 01:55:51,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:55:51,364 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 25 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:51,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2976 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:55:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-11-24 01:55:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2024-11-24 01:55:51,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1549 states have (on average 1.6533247256294383) internal successors, (2561), 1593 states have internal predecessors, (2561), 302 states have call successors, (302), 98 states have call predecessors, (302), 96 states have return successors, (346), 295 states have call predecessors, (346), 297 states have call successors, (346) [2024-11-24 01:55:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 3209 transitions. [2024-11-24 01:55:51,529 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 3209 transitions. Word has length 160 [2024-11-24 01:55:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:51,533 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 3209 transitions. [2024-11-24 01:55:51,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:55:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 3209 transitions. [2024-11-24 01:55:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 01:55:51,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:51,538 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:55:51,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 01:55:51,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:55:51,739 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:51,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:51,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1065403566, now seen corresponding path program 1 times [2024-11-24 01:55:51,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:51,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669011299] [2024-11-24 01:55:51,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:51,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:55:52,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:52,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669011299] [2024-11-24 01:55:52,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669011299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:52,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965508607] [2024-11-24 01:55:52,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:52,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:52,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:52,187 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:52,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-24 01:55:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:52,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:55:52,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:55:52,815 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:52,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965508607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:52,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:52,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-24 01:55:52,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360146196] [2024-11-24 01:55:52,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:52,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:55:52,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:52,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:55:52,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:55:52,818 INFO L87 Difference]: Start difference. First operand 1948 states and 3209 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:55:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:58,405 INFO L93 Difference]: Finished difference Result 6834 states and 11518 transitions. [2024-11-24 01:55:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:55:58,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 161 [2024-11-24 01:55:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:58,447 INFO L225 Difference]: With dead ends: 6834 [2024-11-24 01:55:58,448 INFO L226 Difference]: Without dead ends: 4956 [2024-11-24 01:55:58,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:55:58,470 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 3333 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 5870 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 5870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:58,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3450 Valid, 1633 Invalid, 6667 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [797 Valid, 5870 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-24 01:55:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2024-11-24 01:55:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4682. [2024-11-24 01:55:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4682 states, 3705 states have (on average 1.641565452091768) internal successors, (6082), 3804 states have internal predecessors, (6082), 733 states have call successors, (733), 244 states have call predecessors, (733), 243 states have return successors, (951), 717 states have call predecessors, (951), 724 states have call successors, (951) [2024-11-24 01:55:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 7766 transitions. [2024-11-24 01:55:58,743 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 7766 transitions. Word has length 161 [2024-11-24 01:55:58,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:58,744 INFO L471 AbstractCegarLoop]: Abstraction has 4682 states and 7766 transitions. [2024-11-24 01:55:58,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:55:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 7766 transitions. [2024-11-24 01:55:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 01:55:58,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:58,749 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:58,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-24 01:55:58,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:55:58,950 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:58,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash 536596573, now seen corresponding path program 1 times [2024-11-24 01:55:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:58,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742154331] [2024-11-24 01:55:58,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:58,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 01:55:59,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:59,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742154331] [2024-11-24 01:55:59,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742154331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:59,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810523692] [2024-11-24 01:55:59,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:59,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:59,345 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:59,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-24 01:55:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:59,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:55:59,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-24 01:55:59,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:55:59,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810523692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:55:59,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:55:59,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-24 01:55:59,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639177459] [2024-11-24 01:55:59,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:55:59,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:55:59,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:59,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:55:59,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:55:59,992 INFO L87 Difference]: Start difference. First operand 4682 states and 7766 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 01:56:00,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:00,917 INFO L93 Difference]: Finished difference Result 10517 states and 17626 transitions. [2024-11-24 01:56:00,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:56:00,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 162 [2024-11-24 01:56:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:00,964 INFO L225 Difference]: With dead ends: 10517 [2024-11-24 01:56:00,964 INFO L226 Difference]: Without dead ends: 5894 [2024-11-24 01:56:00,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:56:00,993 INFO L435 NwaCegarLoop]: 1332 mSDtfsCounter, 1751 mSDsluCounter, 4348 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 5680 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:00,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1753 Valid, 5680 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:56:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2024-11-24 01:56:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 5879. [2024-11-24 01:56:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5879 states, 4727 states have (on average 1.6333826951554897) internal successors, (7721), 4828 states have internal predecessors, (7721), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2024-11-24 01:56:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 9819 transitions. [2024-11-24 01:56:01,406 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 9819 transitions. Word has length 162 [2024-11-24 01:56:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:01,407 INFO L471 AbstractCegarLoop]: Abstraction has 5879 states and 9819 transitions. [2024-11-24 01:56:01,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-24 01:56:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 9819 transitions. [2024-11-24 01:56:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-24 01:56:01,411 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:01,411 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:01,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-24 01:56:01,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:01,612 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:01,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash -751535514, now seen corresponding path program 1 times [2024-11-24 01:56:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:01,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613575297] [2024-11-24 01:56:01,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:01,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:56:01,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:01,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613575297] [2024-11-24 01:56:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613575297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:01,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916615327] [2024-11-24 01:56:01,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:01,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:01,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:01,940 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:01,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-24 01:56:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:02,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:56:02,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:56:02,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:56:02,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916615327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:02,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:56:02,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-24 01:56:02,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912461902] [2024-11-24 01:56:02,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:02,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:56:02,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:02,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:56:02,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:56:02,624 INFO L87 Difference]: Start difference. First operand 5879 states and 9819 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:56:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:07,310 INFO L93 Difference]: Finished difference Result 11436 states and 19114 transitions. [2024-11-24 01:56:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:56:07,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 164 [2024-11-24 01:56:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:07,360 INFO L225 Difference]: With dead ends: 11436 [2024-11-24 01:56:07,360 INFO L226 Difference]: Without dead ends: 6342 [2024-11-24 01:56:07,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:56:07,390 INFO L435 NwaCegarLoop]: 454 mSDtfsCounter, 3545 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 837 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 5995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 837 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:07,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 1377 Invalid, 5995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [837 Valid, 5158 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 01:56:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2024-11-24 01:56:07,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 5875. [2024-11-24 01:56:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 4723 states have (on average 1.6322252805420283) internal successors, (7709), 4824 states have internal predecessors, (7709), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2024-11-24 01:56:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 9807 transitions. [2024-11-24 01:56:07,813 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 9807 transitions. Word has length 164 [2024-11-24 01:56:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:07,814 INFO L471 AbstractCegarLoop]: Abstraction has 5875 states and 9807 transitions. [2024-11-24 01:56:07,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:56:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 9807 transitions. [2024-11-24 01:56:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-24 01:56:07,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:07,820 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:07,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-24 01:56:08,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:08,021 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:08,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1217994614, now seen corresponding path program 1 times [2024-11-24 01:56:08,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:08,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997086426] [2024-11-24 01:56:08,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:08,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-24 01:56:08,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997086426] [2024-11-24 01:56:08,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997086426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:08,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581400980] [2024-11-24 01:56:08,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:08,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:08,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:08,324 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:08,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-24 01:56:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:08,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:56:08,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:56:08,941 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:56:08,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581400980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:08,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:56:08,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-24 01:56:08,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400364820] [2024-11-24 01:56:08,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:08,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:56:08,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:08,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:56:08,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:56:08,943 INFO L87 Difference]: Start difference. First operand 5875 states and 9807 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:56:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:13,618 INFO L93 Difference]: Finished difference Result 17700 states and 30875 transitions. [2024-11-24 01:56:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:56:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 165 [2024-11-24 01:56:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:13,716 INFO L225 Difference]: With dead ends: 17700 [2024-11-24 01:56:13,717 INFO L226 Difference]: Without dead ends: 11893 [2024-11-24 01:56:13,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:56:13,771 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 4174 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 1076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4287 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 4674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:13,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4287 Valid, 1132 Invalid, 4674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1076 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-24 01:56:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11893 states. [2024-11-24 01:56:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11893 to 10456. [2024-11-24 01:56:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10456 states, 8386 states have (on average 1.6050560457906033) internal successors, (13460), 8574 states have internal predecessors, (13460), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2024-11-24 01:56:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10456 states to 10456 states and 17168 transitions. [2024-11-24 01:56:14,912 INFO L78 Accepts]: Start accepts. Automaton has 10456 states and 17168 transitions. Word has length 165 [2024-11-24 01:56:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:14,913 INFO L471 AbstractCegarLoop]: Abstraction has 10456 states and 17168 transitions. [2024-11-24 01:56:14,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:56:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 10456 states and 17168 transitions. [2024-11-24 01:56:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 01:56:14,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:14,919 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:56:14,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-24 01:56:15,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-24 01:56:15,120 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:15,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:15,121 INFO L85 PathProgramCache]: Analyzing trace with hash 517217660, now seen corresponding path program 1 times [2024-11-24 01:56:15,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:15,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859282145] [2024-11-24 01:56:15,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:15,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:56:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:15,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859282145] [2024-11-24 01:56:15,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859282145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:15,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190614799] [2024-11-24 01:56:15,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:15,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:15,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:15,583 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:15,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-24 01:56:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:15,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:56:15,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 01:56:15,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:56:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190614799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:15,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:56:15,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-24 01:56:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040006124] [2024-11-24 01:56:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:15,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:56:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:15,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:56:15,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:56:15,990 INFO L87 Difference]: Start difference. First operand 10456 states and 17168 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:56:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:16,604 INFO L93 Difference]: Finished difference Result 20912 states and 34967 transitions. [2024-11-24 01:56:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:56:16,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2024-11-24 01:56:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:16,669 INFO L225 Difference]: With dead ends: 20912 [2024-11-24 01:56:16,669 INFO L226 Difference]: Without dead ends: 10431 [2024-11-24 01:56:16,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:56:16,732 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 31 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:16,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2971 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:56:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2024-11-24 01:56:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10431. [2024-11-24 01:56:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 8361 states have (on average 1.5978949886377227) internal successors, (13360), 8549 states have internal predecessors, (13360), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2024-11-24 01:56:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 17068 transitions. [2024-11-24 01:56:17,671 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 17068 transitions. Word has length 166 [2024-11-24 01:56:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:17,671 INFO L471 AbstractCegarLoop]: Abstraction has 10431 states and 17068 transitions. [2024-11-24 01:56:17,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:56:17,672 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 17068 transitions. [2024-11-24 01:56:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 01:56:17,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:17,678 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:17,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-24 01:56:17,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-24 01:56:17,879 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:17,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash 381597227, now seen corresponding path program 1 times [2024-11-24 01:56:17,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:17,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162476154] [2024-11-24 01:56:17,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:17,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:56:18,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:18,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162476154] [2024-11-24 01:56:18,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162476154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:18,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442207487] [2024-11-24 01:56:18,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:18,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:18,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:18,214 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:18,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-24 01:56:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:18,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:56:18,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:56:18,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:56:18,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442207487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:18,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:56:18,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-24 01:56:18,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905528084] [2024-11-24 01:56:18,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:18,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:56:18,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:18,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:56:18,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:56:18,844 INFO L87 Difference]: Start difference. First operand 10431 states and 17068 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:56:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:23,910 INFO L93 Difference]: Finished difference Result 22321 states and 37860 transitions. [2024-11-24 01:56:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:56:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 166 [2024-11-24 01:56:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:24,012 INFO L225 Difference]: With dead ends: 22321 [2024-11-24 01:56:24,012 INFO L226 Difference]: Without dead ends: 11965 [2024-11-24 01:56:24,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:56:24,088 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 5462 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 3777 mSolverCounterSat, 1401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 5178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1401 IncrementalHoareTripleChecker+Valid, 3777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:24,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 1186 Invalid, 5178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1401 Valid, 3777 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 01:56:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11965 states. [2024-11-24 01:56:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11965 to 10539. [2024-11-24 01:56:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10539 states, 8469 states have (on average 1.597355059629236) internal successors, (13528), 8657 states have internal predecessors, (13528), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2024-11-24 01:56:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10539 states to 10539 states and 17236 transitions. [2024-11-24 01:56:24,843 INFO L78 Accepts]: Start accepts. Automaton has 10539 states and 17236 transitions. Word has length 166 [2024-11-24 01:56:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:24,844 INFO L471 AbstractCegarLoop]: Abstraction has 10539 states and 17236 transitions. [2024-11-24 01:56:24,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:56:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 10539 states and 17236 transitions. [2024-11-24 01:56:24,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-24 01:56:24,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:24,847 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:56:24,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-24 01:56:25,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:25,048 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:25,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash -644345306, now seen corresponding path program 1 times [2024-11-24 01:56:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079145425] [2024-11-24 01:56:25,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:56:25,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:25,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079145425] [2024-11-24 01:56:25,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079145425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:25,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211672983] [2024-11-24 01:56:25,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:25,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:25,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:25,586 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:25,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-24 01:56:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:26,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:56:26,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:56:26,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:56:26,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211672983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:26,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:56:26,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-24 01:56:26,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795560409] [2024-11-24 01:56:26,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:26,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:56:26,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:26,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:56:26,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:56:26,369 INFO L87 Difference]: Start difference. First operand 10539 states and 17236 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:56:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:31,458 INFO L93 Difference]: Finished difference Result 20957 states and 34457 transitions. [2024-11-24 01:56:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:56:31,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 167 [2024-11-24 01:56:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:31,532 INFO L225 Difference]: With dead ends: 20957 [2024-11-24 01:56:31,533 INFO L226 Difference]: Without dead ends: 11283 [2024-11-24 01:56:31,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:56:31,588 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 2923 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 5747 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 6394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 5747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:31,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 1926 Invalid, 6394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 5747 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 01:56:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11283 states. [2024-11-24 01:56:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11283 to 10527. [2024-11-24 01:56:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10527 states, 8457 states have (on average 1.5953647865673406) internal successors, (13492), 8645 states have internal predecessors, (13492), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2024-11-24 01:56:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10527 states to 10527 states and 17200 transitions. [2024-11-24 01:56:32,436 INFO L78 Accepts]: Start accepts. Automaton has 10527 states and 17200 transitions. Word has length 167 [2024-11-24 01:56:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:32,437 INFO L471 AbstractCegarLoop]: Abstraction has 10527 states and 17200 transitions. [2024-11-24 01:56:32,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-24 01:56:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 10527 states and 17200 transitions. [2024-11-24 01:56:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 01:56:32,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:32,448 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:32,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-24 01:56:32,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:32,649 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:32,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash 563500752, now seen corresponding path program 1 times [2024-11-24 01:56:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879559438] [2024-11-24 01:56:32,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:32,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:56:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:33,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879559438] [2024-11-24 01:56:33,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879559438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:33,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176425520] [2024-11-24 01:56:33,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:33,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:33,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:33,023 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:33,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-24 01:56:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:33,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:56:33,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:56:33,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:56:33,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176425520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:56:33,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:56:33,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-24 01:56:33,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621191556] [2024-11-24 01:56:33,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:56:33,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:56:33,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:33,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:56:33,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:56:33,498 INFO L87 Difference]: Start difference. First operand 10527 states and 17200 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:56:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:34,175 INFO L93 Difference]: Finished difference Result 21129 states and 34919 transitions. [2024-11-24 01:56:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:56:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2024-11-24 01:56:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:34,263 INFO L225 Difference]: With dead ends: 21129 [2024-11-24 01:56:34,263 INFO L226 Difference]: Without dead ends: 10677 [2024-11-24 01:56:34,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:56:34,330 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 0 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:34,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4019 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:56:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10677 states. [2024-11-24 01:56:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10677 to 10603. [2024-11-24 01:56:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10603 states, 8520 states have (on average 1.590962441314554) internal successors, (13555), 8696 states have internal predecessors, (13555), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 633 states have return successors, (2284), 1451 states have call predecessors, (2284), 1430 states have call successors, (2284) [2024-11-24 01:56:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10603 states to 10603 states and 17288 transitions. [2024-11-24 01:56:35,103 INFO L78 Accepts]: Start accepts. Automaton has 10603 states and 17288 transitions. Word has length 169 [2024-11-24 01:56:35,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:35,104 INFO L471 AbstractCegarLoop]: Abstraction has 10603 states and 17288 transitions. [2024-11-24 01:56:35,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:56:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 10603 states and 17288 transitions. [2024-11-24 01:56:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-24 01:56:35,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:35,108 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:35,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-24 01:56:35,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:35,311 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:35,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1946716336, now seen corresponding path program 1 times [2024-11-24 01:56:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:35,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351118730] [2024-11-24 01:56:35,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-24 01:56:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:56:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351118730] [2024-11-24 01:56:35,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351118730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:56:35,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591936649] [2024-11-24 01:56:35,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:35,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:56:35,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:56:35,749 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:56:35,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-24 01:56:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:56:36,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:56:36,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:56:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 01:56:36,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:56:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-24 01:56:36,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591936649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:56:36,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:56:36,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2024-11-24 01:56:36,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000475246] [2024-11-24 01:56:36,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:56:36,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:56:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:56:36,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:56:36,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:56:36,864 INFO L87 Difference]: Start difference. First operand 10603 states and 17288 transitions. Second operand has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 19 states have internal predecessors, (282), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2024-11-24 01:57:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:10,924 INFO L93 Difference]: Finished difference Result 77950 states and 150331 transitions. [2024-11-24 01:57:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-24 01:57:10,924 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 19 states have internal predecessors, (282), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) Word has length 173 [2024-11-24 01:57:10,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:11,497 INFO L225 Difference]: With dead ends: 77950 [2024-11-24 01:57:11,497 INFO L226 Difference]: Without dead ends: 67370 [2024-11-24 01:57:11,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8817 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3487, Invalid=17105, Unknown=0, NotChecked=0, Total=20592 [2024-11-24 01:57:11,908 INFO L435 NwaCegarLoop]: 1183 mSDtfsCounter, 17426 mSDsluCounter, 9343 mSDsCounter, 0 mSdLazyCounter, 34785 mSolverCounterSat, 6454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17447 SdHoareTripleChecker+Valid, 10526 SdHoareTripleChecker+Invalid, 41239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 6454 IncrementalHoareTripleChecker+Valid, 34785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:11,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17447 Valid, 10526 Invalid, 41239 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [6454 Valid, 34785 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2024-11-24 01:57:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67370 states. [2024-11-24 01:57:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67370 to 49973. [2024-11-24 01:57:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49973 states, 39276 states have (on average 1.5719523373052247) internal successors, (61740), 40570 states have internal predecessors, (61740), 7456 states have call successors, (7456), 2699 states have call predecessors, (7456), 3240 states have return successors, (12464), 7602 states have call predecessors, (12464), 7416 states have call successors, (12464) [2024-11-24 01:57:16,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49973 states to 49973 states and 81660 transitions. [2024-11-24 01:57:16,886 INFO L78 Accepts]: Start accepts. Automaton has 49973 states and 81660 transitions. Word has length 173 [2024-11-24 01:57:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:16,887 INFO L471 AbstractCegarLoop]: Abstraction has 49973 states and 81660 transitions. [2024-11-24 01:57:16,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 19 states have internal predecessors, (282), 9 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2024-11-24 01:57:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 49973 states and 81660 transitions. [2024-11-24 01:57:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-24 01:57:16,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:16,894 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:16,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-24 01:57:17,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 01:57:17,095 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:57:17,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1282697468, now seen corresponding path program 1 times [2024-11-24 01:57:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:17,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614771918] [2024-11-24 01:57:17,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:17,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-24 01:57:17,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:17,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614771918] [2024-11-24 01:57:17,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614771918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:57:17,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28648713] [2024-11-24 01:57:17,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:17,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:17,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:17,285 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:17,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-24 01:57:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:17,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:57:17,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 01:57:17,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:57:17,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28648713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:17,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:57:17,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-24 01:57:17,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921688035] [2024-11-24 01:57:17,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:17,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:57:17,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:17,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:57:17,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:57:17,740 INFO L87 Difference]: Start difference. First operand 49973 states and 81660 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:57:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:20,766 INFO L93 Difference]: Finished difference Result 98392 states and 160514 transitions. [2024-11-24 01:57:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:57:20,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 189 [2024-11-24 01:57:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:21,101 INFO L225 Difference]: With dead ends: 98392 [2024-11-24 01:57:21,101 INFO L226 Difference]: Without dead ends: 48844 [2024-11-24 01:57:21,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:57:21,357 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 46 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:21,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2933 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:57:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48844 states. [2024-11-24 01:57:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48844 to 48844. [2024-11-24 01:57:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48844 states, 38290 states have (on average 1.5680856620527552) internal successors, (60042), 39582 states have internal predecessors, (60042), 7377 states have call successors, (7377), 2637 states have call predecessors, (7377), 3176 states have return successors, (12191), 7523 states have call predecessors, (12191), 7337 states have call successors, (12191) [2024-11-24 01:57:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48844 states to 48844 states and 79610 transitions. [2024-11-24 01:57:24,880 INFO L78 Accepts]: Start accepts. Automaton has 48844 states and 79610 transitions. Word has length 189 [2024-11-24 01:57:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:24,880 INFO L471 AbstractCegarLoop]: Abstraction has 48844 states and 79610 transitions. [2024-11-24 01:57:24,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 01:57:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 48844 states and 79610 transitions. [2024-11-24 01:57:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-24 01:57:24,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:24,883 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:24,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-24 01:57:25,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-24 01:57:25,084 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:57:25,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash 567608911, now seen corresponding path program 1 times [2024-11-24 01:57:25,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:25,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751555008] [2024-11-24 01:57:25,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:25,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-24 01:57:25,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:25,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751555008] [2024-11-24 01:57:25,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751555008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:57:25,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124864629] [2024-11-24 01:57:25,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:25,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:25,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:25,688 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:25,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-24 01:57:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:26,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:57:26,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:57:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-24 01:57:26,251 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:57:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124864629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:26,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:57:26,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-24 01:57:26,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148134364] [2024-11-24 01:57:26,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:26,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:57:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:26,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:57:26,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:57:26,254 INFO L87 Difference]: Start difference. First operand 48844 states and 79610 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:57:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:29,583 INFO L93 Difference]: Finished difference Result 97015 states and 160327 transitions. [2024-11-24 01:57:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:57:29,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 196 [2024-11-24 01:57:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:29,869 INFO L225 Difference]: With dead ends: 97015 [2024-11-24 01:57:29,869 INFO L226 Difference]: Without dead ends: 49216 [2024-11-24 01:57:30,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:57:30,396 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 0 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6041 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:30,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6041 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:57:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49216 states. [2024-11-24 01:57:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49216 to 49216. [2024-11-24 01:57:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49216 states, 38600 states have (on average 1.5635233160621762) internal successors, (60352), 39892 states have internal predecessors, (60352), 7377 states have call successors, (7377), 2637 states have call predecessors, (7377), 3238 states have return successors, (12284), 7585 states have call predecessors, (12284), 7337 states have call successors, (12284) [2024-11-24 01:57:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49216 states to 49216 states and 80013 transitions. [2024-11-24 01:57:33,977 INFO L78 Accepts]: Start accepts. Automaton has 49216 states and 80013 transitions. Word has length 196 [2024-11-24 01:57:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:33,978 INFO L471 AbstractCegarLoop]: Abstraction has 49216 states and 80013 transitions. [2024-11-24 01:57:33,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 01:57:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 49216 states and 80013 transitions. [2024-11-24 01:57:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-24 01:57:33,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:33,983 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:33,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-24 01:57:34,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_014fdf9e-9918-4f50-8ec7-98e94530b6b1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 01:57:34,183 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:57:34,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1339037571, now seen corresponding path program 1 times [2024-11-24 01:57:34,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:34,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636496948] [2024-11-24 01:57:34,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:34,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-24 01:57:34,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636496948] [2024-11-24 01:57:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636496948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:34,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:34,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:57:34,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227597092] [2024-11-24 01:57:34,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:34,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:57:34,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:34,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:57:34,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:57:34,629 INFO L87 Difference]: Start difference. First operand 49216 states and 80013 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-24 01:57:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:57:43,900 INFO L93 Difference]: Finished difference Result 100124 states and 167075 transitions. [2024-11-24 01:57:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:57:43,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 199 [2024-11-24 01:57:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:57:44,268 INFO L225 Difference]: With dead ends: 100124 [2024-11-24 01:57:44,269 INFO L226 Difference]: Without dead ends: 51969 [2024-11-24 01:57:44,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:57:44,726 INFO L435 NwaCegarLoop]: 742 mSDtfsCounter, 3050 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 9226 mSolverCounterSat, 854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3089 SdHoareTripleChecker+Valid, 4278 SdHoareTripleChecker+Invalid, 10080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 854 IncrementalHoareTripleChecker+Valid, 9226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:57:44,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3089 Valid, 4278 Invalid, 10080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [854 Valid, 9226 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-24 01:57:44,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51969 states. [2024-11-24 01:57:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51969 to 49393. [2024-11-24 01:57:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49393 states, 38746 states have (on average 1.5603159035771434) internal successors, (60456), 40038 states have internal predecessors, (60456), 7335 states have call successors, (7335), 2626 states have call predecessors, (7335), 3311 states have return successors, (12437), 7627 states have call predecessors, (12437), 7295 states have call successors, (12437) [2024-11-24 01:57:48,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49393 states to 49393 states and 80228 transitions. [2024-11-24 01:57:48,232 INFO L78 Accepts]: Start accepts. Automaton has 49393 states and 80228 transitions. Word has length 199 [2024-11-24 01:57:48,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:57:48,232 INFO L471 AbstractCegarLoop]: Abstraction has 49393 states and 80228 transitions. [2024-11-24 01:57:48,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-24 01:57:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 49393 states and 80228 transitions. [2024-11-24 01:57:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-24 01:57:48,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:57:48,236 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:57:48,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-24 01:57:48,236 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:57:48,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:57:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash 750838839, now seen corresponding path program 1 times [2024-11-24 01:57:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:57:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432591555] [2024-11-24 01:57:48,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-24 01:57:48,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:48,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432591555] [2024-11-24 01:57:48,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432591555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:57:48,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:57:48,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:57:48,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828028056] [2024-11-24 01:57:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:57:48,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:57:48,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:57:48,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:57:48,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:57:48,402 INFO L87 Difference]: Start difference. First operand 49393 states and 80228 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19)