./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product20.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_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/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_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/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_41634dde-e7a0-4ea0-bab8-e19e9df6416e/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 e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:35:52,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:35:52,486 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:35:52,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:35:52,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:35:52,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:35:52,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:35:52,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:35:52,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:35:52,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:35:52,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:35:52,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:35:52,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:35:52,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:35:52,550 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:35:52,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:35:52,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:35:52,550 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:35:52,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:35:52,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:35:52,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:35:52,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:35:52,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:35:52,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:35:52,552 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:35:52,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:35:52,552 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:35:52,552 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:35:52,552 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:35:52,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:52,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:52,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:52,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:52,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:35:52,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:52,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:52,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:52,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:52,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:35:52,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:35:52,554 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:35:52,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:35:52,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:35:52,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:35:52,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:35:52,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:35:52,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:35:52,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:35:52,554 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_41634dde-e7a0-4ea0-bab8-e19e9df6416e/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 -> e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 [2024-11-23 22:35:52,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:35:53,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:35:53,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:35:53,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:35:53,012 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:35:53,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2024-11-23 22:35:56,549 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/data/8f618cfda/e4a960bf2714468999730a18d61d2be5/FLAG71092fbb5 [2024-11-23 22:35:56,985 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:35:56,985 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2024-11-23 22:35:57,022 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/data/8f618cfda/e4a960bf2714468999730a18d61d2be5/FLAG71092fbb5 [2024-11-23 22:35:57,046 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/data/8f618cfda/e4a960bf2714468999730a18d61d2be5 [2024-11-23 22:35:57,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:35:57,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:35:57,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:57,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:35:57,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:35:57,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,064 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2dba92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57, skipping insertion in model container [2024-11-23 22:35:57,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:35:57,726 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_41634dde-e7a0-4ea0-bab8-e19e9df6416e/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2024-11-23 22:35:57,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:57,994 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:35:58,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [48] [2024-11-23 22:35:58,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [236] [2024-11-23 22:35:58,008 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1824] [2024-11-23 22:35:58,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1833] [2024-11-23 22:35:58,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2199] [2024-11-23 22:35:58,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2861] [2024-11-23 22:35:58,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2875] [2024-11-23 22:35:58,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2913] [2024-11-23 22:35:58,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3006] [2024-11-23 22:35:58,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3356] [2024-11-23 22:35:58,097 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_41634dde-e7a0-4ea0-bab8-e19e9df6416e/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2024-11-23 22:35:58,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:58,212 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:35:58,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58 WrapperNode [2024-11-23 22:35:58,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:58,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:58,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:35:58,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:35:58,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,337 INFO L138 Inliner]: procedures = 96, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1132 [2024-11-23 22:35:58,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:58,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:35:58,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:35:58,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:35:58,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,427 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-23 22:35:58,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,454 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:35:58,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:35:58,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:35:58,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:35:58,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (1/1) ... [2024-11-23 22:35:58,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:58,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:58,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:35:58,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:35:58,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:35:58,615 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 22:35:58,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 22:35:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-23 22:35:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-23 22:35:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-23 22:35:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-23 22:35:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 22:35:58,617 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 22:35:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-23 22:35:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-23 22:35:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 22:35:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 22:35:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 22:35:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 22:35:58,618 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 22:35:58,618 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 22:35:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 22:35:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 22:35:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-23 22:35:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-23 22:35:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 22:35:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 22:35:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 22:35:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 22:35:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 22:35:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 22:35:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 22:35:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-23 22:35:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 22:35:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 22:35:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 22:35:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 22:35:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 22:35:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:35:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 22:35:58,624 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 22:35:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 22:35:58,624 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 22:35:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 22:35:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 22:35:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:35:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:35:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 22:35:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 22:35:58,625 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-23 22:35:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-23 22:35:58,896 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:35:58,900 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:36:00,752 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-11-23 22:36:00,753 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:36:00,805 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:36:00,805 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:36:00,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:00 BoogieIcfgContainer [2024-11-23 22:36:00,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:36:00,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:36:00,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:36:00,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:36:00,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:35:57" (1/3) ... [2024-11-23 22:36:00,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5bffd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:00, skipping insertion in model container [2024-11-23 22:36:00,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:58" (2/3) ... [2024-11-23 22:36:00,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5bffd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:00, skipping insertion in model container [2024-11-23 22:36:00,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:00" (3/3) ... [2024-11-23 22:36:00,828 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2024-11-23 22:36:00,849 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:36:00,855 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product20.cil.c that has 26 procedures, 568 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:36:00,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:36:00,982 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;@7b07efe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:36:00,984 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:36:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 568 states, 442 states have (on average 1.6877828054298643) internal successors, (746), 465 states have internal predecessors, (746), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-23 22:36:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-23 22:36:01,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:01,012 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:01,012 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:01,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1227891952, now seen corresponding path program 1 times [2024-11-23 22:36:01,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816950379] [2024-11-23 22:36:01,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:01,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816950379] [2024-11-23 22:36:01,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816950379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:01,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:01,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:36:01,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919184044] [2024-11-23 22:36:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:02,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:02,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:02,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:02,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:02,044 INFO L87 Difference]: Start difference. First operand has 568 states, 442 states have (on average 1.6877828054298643) internal successors, (746), 465 states have internal predecessors, (746), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:02,366 INFO L93 Difference]: Finished difference Result 1116 states and 1863 transitions. [2024-11-23 22:36:02,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:02,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-11-23 22:36:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:02,406 INFO L225 Difference]: With dead ends: 1116 [2024-11-23 22:36:02,407 INFO L226 Difference]: Without dead ends: 560 [2024-11-23 22:36:02,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:02,428 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 5 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:02,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2765 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-23 22:36:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-23 22:36:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.68348623853211) internal successors, (734), 457 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 927 transitions. [2024-11-23 22:36:02,600 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 927 transitions. Word has length 60 [2024-11-23 22:36:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:02,603 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 927 transitions. [2024-11-23 22:36:02,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 927 transitions. [2024-11-23 22:36:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 22:36:02,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:02,609 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:02,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:36:02,609 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:02,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1997288954, now seen corresponding path program 1 times [2024-11-23 22:36:02,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:02,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96037077] [2024-11-23 22:36:02,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:02,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:02,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96037077] [2024-11-23 22:36:02,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96037077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:02,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:02,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:36:02,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394421467] [2024-11-23 22:36:02,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:02,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:02,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:02,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:02,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:02,926 INFO L87 Difference]: Start difference. First operand 560 states and 927 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:03,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:03,071 INFO L93 Difference]: Finished difference Result 1102 states and 1831 transitions. [2024-11-23 22:36:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:03,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-23 22:36:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:03,088 INFO L225 Difference]: With dead ends: 1102 [2024-11-23 22:36:03,088 INFO L226 Difference]: Without dead ends: 560 [2024-11-23 22:36:03,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:03,095 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 4 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:03,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2744 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-23 22:36:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-23 22:36:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.6811926605504588) internal successors, (733), 457 states have internal predecessors, (733), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 926 transitions. [2024-11-23 22:36:03,168 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 926 transitions. Word has length 62 [2024-11-23 22:36:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:03,169 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 926 transitions. [2024-11-23 22:36:03,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:03,169 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 926 transitions. [2024-11-23 22:36:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 22:36:03,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:03,172 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:03,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:36:03,173 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:03,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1477257944, now seen corresponding path program 1 times [2024-11-23 22:36:03,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282016421] [2024-11-23 22:36:03,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:03,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:03,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:03,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282016421] [2024-11-23 22:36:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282016421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:03,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:03,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:36:03,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629133627] [2024-11-23 22:36:03,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:03,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:03,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:03,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:03,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:03,493 INFO L87 Difference]: Start difference. First operand 560 states and 926 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:03,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:03,610 INFO L93 Difference]: Finished difference Result 1102 states and 1830 transitions. [2024-11-23 22:36:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:03,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-23 22:36:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:03,621 INFO L225 Difference]: With dead ends: 1102 [2024-11-23 22:36:03,624 INFO L226 Difference]: Without dead ends: 560 [2024-11-23 22:36:03,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:03,629 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 3 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:03,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2744 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-23 22:36:03,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-23 22:36:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.6788990825688073) internal successors, (732), 457 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 925 transitions. [2024-11-23 22:36:03,702 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 925 transitions. Word has length 63 [2024-11-23 22:36:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:03,703 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 925 transitions. [2024-11-23 22:36:03,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 925 transitions. [2024-11-23 22:36:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 22:36:03,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:03,708 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:03,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:36:03,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:03,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:03,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1789838914, now seen corresponding path program 1 times [2024-11-23 22:36:03,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:03,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131598420] [2024-11-23 22:36:03,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:03,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131598420] [2024-11-23 22:36:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131598420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:03,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:03,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:36:03,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716230158] [2024-11-23 22:36:03,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:03,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:03,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:03,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:03,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:03,974 INFO L87 Difference]: Start difference. First operand 560 states and 925 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:04,063 INFO L93 Difference]: Finished difference Result 1102 states and 1829 transitions. [2024-11-23 22:36:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:04,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-23 22:36:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:04,071 INFO L225 Difference]: With dead ends: 1102 [2024-11-23 22:36:04,072 INFO L226 Difference]: Without dead ends: 560 [2024-11-23 22:36:04,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:04,081 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 2 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:04,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2744 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-23 22:36:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-23 22:36:04,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.676605504587156) internal successors, (731), 457 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 924 transitions. [2024-11-23 22:36:04,138 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 924 transitions. Word has length 64 [2024-11-23 22:36:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:04,143 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 924 transitions. [2024-11-23 22:36:04,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 924 transitions. [2024-11-23 22:36:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 22:36:04,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:04,148 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:04,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:36:04,149 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:04,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash -21663844, now seen corresponding path program 1 times [2024-11-23 22:36:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:04,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544022989] [2024-11-23 22:36:04,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:04,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:04,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544022989] [2024-11-23 22:36:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544022989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:04,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:04,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:36:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268043884] [2024-11-23 22:36:04,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:04,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:04,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:04,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:04,395 INFO L87 Difference]: Start difference. First operand 560 states and 924 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:04,482 INFO L93 Difference]: Finished difference Result 1102 states and 1828 transitions. [2024-11-23 22:36:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:04,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-23 22:36:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:04,491 INFO L225 Difference]: With dead ends: 1102 [2024-11-23 22:36:04,492 INFO L226 Difference]: Without dead ends: 560 [2024-11-23 22:36:04,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:04,498 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 1 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:04,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2744 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-23 22:36:04,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-23 22:36:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 436 states have (on average 1.6743119266055047) internal successors, (730), 457 states have internal predecessors, (730), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 923 transitions. [2024-11-23 22:36:04,547 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 923 transitions. Word has length 65 [2024-11-23 22:36:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:04,548 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 923 transitions. [2024-11-23 22:36:04,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 923 transitions. [2024-11-23 22:36:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-23 22:36:04,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:04,551 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:04,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:36:04,552 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:04,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:04,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1073848958, now seen corresponding path program 1 times [2024-11-23 22:36:04,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:04,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503335706] [2024-11-23 22:36:04,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:04,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:05,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503335706] [2024-11-23 22:36:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503335706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:36:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076480603] [2024-11-23 22:36:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:05,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:36:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:05,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:36:05,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:05,078 INFO L87 Difference]: Start difference. First operand 560 states and 923 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 22:36:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:05,339 INFO L93 Difference]: Finished difference Result 1068 states and 1760 transitions. [2024-11-23 22:36:05,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:05,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-11-23 22:36:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:05,348 INFO L225 Difference]: With dead ends: 1068 [2024-11-23 22:36:05,348 INFO L226 Difference]: Without dead ends: 575 [2024-11-23 22:36:05,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:05,353 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 91 mSDsluCounter, 6294 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7205 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:05,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7205 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-23 22:36:05,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2024-11-23 22:36:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 446 states have (on average 1.6704035874439462) internal successors, (745), 469 states have internal predecessors, (745), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2024-11-23 22:36:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 942 transitions. [2024-11-23 22:36:05,402 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 942 transitions. Word has length 66 [2024-11-23 22:36:05,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:05,403 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 942 transitions. [2024-11-23 22:36:05,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 22:36:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 942 transitions. [2024-11-23 22:36:05,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-23 22:36:05,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:05,408 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:05,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:36:05,409 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:05,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1081608317, now seen corresponding path program 1 times [2024-11-23 22:36:05,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:05,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394954654] [2024-11-23 22:36:05,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:05,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394954654] [2024-11-23 22:36:05,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394954654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:05,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:05,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:36:05,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985362254] [2024-11-23 22:36:05,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:05,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:05,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:05,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:05,602 INFO L87 Difference]: Start difference. First operand 573 states and 942 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:05,669 INFO L93 Difference]: Finished difference Result 1120 states and 1854 transitions. [2024-11-23 22:36:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:05,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-23 22:36:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:05,676 INFO L225 Difference]: With dead ends: 1120 [2024-11-23 22:36:05,677 INFO L226 Difference]: Without dead ends: 554 [2024-11-23 22:36:05,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:05,681 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 0 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:05,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2746 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:05,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-23 22:36:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 554. [2024-11-23 22:36:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.6651162790697673) internal successors, (716), 451 states have internal predecessors, (716), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 909 transitions. [2024-11-23 22:36:05,721 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 909 transitions. Word has length 66 [2024-11-23 22:36:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:05,722 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 909 transitions. [2024-11-23 22:36:05,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 909 transitions. [2024-11-23 22:36:05,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 22:36:05,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:05,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:05,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:36:05,726 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:05,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1929726011, now seen corresponding path program 1 times [2024-11-23 22:36:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540661912] [2024-11-23 22:36:05,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:05,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540661912] [2024-11-23 22:36:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540661912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:05,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:05,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:36:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099376947] [2024-11-23 22:36:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:05,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:36:05,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:05,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:36:05,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:05,978 INFO L87 Difference]: Start difference. First operand 554 states and 909 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:06,334 INFO L93 Difference]: Finished difference Result 1065 states and 1752 transitions. [2024-11-23 22:36:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:06,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-23 22:36:06,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:06,343 INFO L225 Difference]: With dead ends: 1065 [2024-11-23 22:36:06,344 INFO L226 Difference]: Without dead ends: 563 [2024-11-23 22:36:06,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:06,348 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 55 mSDsluCounter, 3435 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4301 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:06,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4301 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:36:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-23 22:36:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2024-11-23 22:36:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.655813953488372) internal successors, (712), 451 states have internal predecessors, (712), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 905 transitions. [2024-11-23 22:36:06,386 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 905 transitions. Word has length 67 [2024-11-23 22:36:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:06,386 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 905 transitions. [2024-11-23 22:36:06,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 905 transitions. [2024-11-23 22:36:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 22:36:06,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:06,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:06,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:36:06,390 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:06,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1591889697, now seen corresponding path program 1 times [2024-11-23 22:36:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138191265] [2024-11-23 22:36:06,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:06,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:06,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:06,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138191265] [2024-11-23 22:36:06,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138191265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:06,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:36:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711040356] [2024-11-23 22:36:06,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:06,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:36:06,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:06,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:36:06,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:06,676 INFO L87 Difference]: Start difference. First operand 554 states and 905 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:06,942 INFO L93 Difference]: Finished difference Result 1065 states and 1748 transitions. [2024-11-23 22:36:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:06,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-23 22:36:06,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:06,949 INFO L225 Difference]: With dead ends: 1065 [2024-11-23 22:36:06,949 INFO L226 Difference]: Without dead ends: 563 [2024-11-23 22:36:06,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:06,954 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 54 mSDsluCounter, 3435 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4301 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:06,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4301 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:36:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-23 22:36:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2024-11-23 22:36:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.6465116279069767) internal successors, (708), 451 states have internal predecessors, (708), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 901 transitions. [2024-11-23 22:36:07,002 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 901 transitions. Word has length 68 [2024-11-23 22:36:07,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:07,002 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 901 transitions. [2024-11-23 22:36:07,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:07,003 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 901 transitions. [2024-11-23 22:36:07,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 22:36:07,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:07,008 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:07,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:36:07,008 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:07,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:07,009 INFO L85 PathProgramCache]: Analyzing trace with hash 911467680, now seen corresponding path program 1 times [2024-11-23 22:36:07,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:07,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957906316] [2024-11-23 22:36:07,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:07,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:07,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:07,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957906316] [2024-11-23 22:36:07,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957906316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:07,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:07,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:36:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787094732] [2024-11-23 22:36:07,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:07,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:36:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:07,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:36:07,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:07,237 INFO L87 Difference]: Start difference. First operand 554 states and 901 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:07,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:07,500 INFO L93 Difference]: Finished difference Result 1065 states and 1744 transitions. [2024-11-23 22:36:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:07,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-23 22:36:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:07,509 INFO L225 Difference]: With dead ends: 1065 [2024-11-23 22:36:07,509 INFO L226 Difference]: Without dead ends: 563 [2024-11-23 22:36:07,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:07,513 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 53 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:07,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4283 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:36:07,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-23 22:36:07,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2024-11-23 22:36:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.6372093023255814) internal successors, (704), 451 states have internal predecessors, (704), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 897 transitions. [2024-11-23 22:36:07,548 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 897 transitions. Word has length 69 [2024-11-23 22:36:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:07,549 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 897 transitions. [2024-11-23 22:36:07,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 897 transitions. [2024-11-23 22:36:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 22:36:07,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:07,551 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:07,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:36:07,552 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:07,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1509296096, now seen corresponding path program 1 times [2024-11-23 22:36:07,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:07,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517534382] [2024-11-23 22:36:07,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:07,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:07,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517534382] [2024-11-23 22:36:07,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517534382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:07,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:07,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:36:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688276389] [2024-11-23 22:36:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:07,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:36:07,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:07,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:36:07,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:07,851 INFO L87 Difference]: Start difference. First operand 554 states and 897 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 22:36:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:08,006 INFO L93 Difference]: Finished difference Result 1056 states and 1726 transitions. [2024-11-23 22:36:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:36:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2024-11-23 22:36:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:08,017 INFO L225 Difference]: With dead ends: 1056 [2024-11-23 22:36:08,018 INFO L226 Difference]: Without dead ends: 533 [2024-11-23 22:36:08,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:08,022 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 84 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5243 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:08,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5243 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-23 22:36:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-23 22:36:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 409 states have (on average 1.6381418092909537) internal successors, (670), 430 states have internal predecessors, (670), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 863 transitions. [2024-11-23 22:36:08,057 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 863 transitions. Word has length 69 [2024-11-23 22:36:08,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:08,058 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 863 transitions. [2024-11-23 22:36:08,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 22:36:08,058 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 863 transitions. [2024-11-23 22:36:08,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 22:36:08,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:08,061 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:08,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:36:08,061 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:08,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1826501274, now seen corresponding path program 1 times [2024-11-23 22:36:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:08,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805213945] [2024-11-23 22:36:08,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:08,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:08,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805213945] [2024-11-23 22:36:08,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805213945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:08,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:08,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:36:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866366904] [2024-11-23 22:36:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:08,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:36:08,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:08,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:36:08,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:08,255 INFO L87 Difference]: Start difference. First operand 533 states and 863 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:08,410 INFO L93 Difference]: Finished difference Result 1035 states and 1692 transitions. [2024-11-23 22:36:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:08,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-11-23 22:36:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:08,418 INFO L225 Difference]: With dead ends: 1035 [2024-11-23 22:36:08,418 INFO L226 Difference]: Without dead ends: 533 [2024-11-23 22:36:08,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:08,423 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 17 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:08,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4221 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-23 22:36:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-23 22:36:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 409 states have (on average 1.6356968215158925) internal successors, (669), 430 states have internal predecessors, (669), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:08,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 862 transitions. [2024-11-23 22:36:08,455 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 862 transitions. Word has length 70 [2024-11-23 22:36:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:08,455 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 862 transitions. [2024-11-23 22:36:08,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 862 transitions. [2024-11-23 22:36:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-23 22:36:08,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:08,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:08,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:36:08,458 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:08,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash 748137851, now seen corresponding path program 1 times [2024-11-23 22:36:08,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:08,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492342802] [2024-11-23 22:36:08,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:08,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:08,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492342802] [2024-11-23 22:36:08,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492342802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:08,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:08,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:36:08,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40517384] [2024-11-23 22:36:08,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:08,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:36:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:08,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:36:08,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:08,642 INFO L87 Difference]: Start difference. First operand 533 states and 862 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:08,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:08,759 INFO L93 Difference]: Finished difference Result 1035 states and 1691 transitions. [2024-11-23 22:36:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:08,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2024-11-23 22:36:08,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:08,767 INFO L225 Difference]: With dead ends: 1035 [2024-11-23 22:36:08,767 INFO L226 Difference]: Without dead ends: 533 [2024-11-23 22:36:08,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:08,771 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 16 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:08,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4221 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-23 22:36:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-23 22:36:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 409 states have (on average 1.6332518337408313) internal successors, (668), 430 states have internal predecessors, (668), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 861 transitions. [2024-11-23 22:36:08,801 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 861 transitions. Word has length 71 [2024-11-23 22:36:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:08,802 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 861 transitions. [2024-11-23 22:36:08,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-23 22:36:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 861 transitions. [2024-11-23 22:36:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 22:36:08,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:08,804 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:08,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:36:08,804 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:08,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1995990955, now seen corresponding path program 1 times [2024-11-23 22:36:08,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:08,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78273389] [2024-11-23 22:36:08,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:08,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78273389] [2024-11-23 22:36:09,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78273389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:09,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:09,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:36:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121313856] [2024-11-23 22:36:09,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:09,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:36:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:09,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:36:09,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:09,133 INFO L87 Difference]: Start difference. First operand 533 states and 861 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 22:36:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:09,322 INFO L93 Difference]: Finished difference Result 1029 states and 1679 transitions. [2024-11-23 22:36:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:09,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-23 22:36:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:09,329 INFO L225 Difference]: With dead ends: 1029 [2024-11-23 22:36:09,330 INFO L226 Difference]: Without dead ends: 533 [2024-11-23 22:36:09,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:09,333 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 6 mSDsluCounter, 6738 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7583 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:09,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7583 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-23 22:36:09,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2024-11-23 22:36:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 409 states have (on average 1.63080684596577) internal successors, (667), 430 states have internal predecessors, (667), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-23 22:36:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 860 transitions. [2024-11-23 22:36:09,368 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 860 transitions. Word has length 72 [2024-11-23 22:36:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:09,370 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 860 transitions. [2024-11-23 22:36:09,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 22:36:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 860 transitions. [2024-11-23 22:36:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-23 22:36:09,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:09,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:09,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:36:09,374 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:09,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:09,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1254124666, now seen corresponding path program 1 times [2024-11-23 22:36:09,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:09,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103370102] [2024-11-23 22:36:09,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:09,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:36:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:09,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103370102] [2024-11-23 22:36:09,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103370102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:09,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:09,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:36:09,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660927192] [2024-11-23 22:36:09,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:09,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:36:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:09,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:36:09,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:09,796 INFO L87 Difference]: Start difference. First operand 533 states and 860 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-23 22:36:13,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:13,659 INFO L93 Difference]: Finished difference Result 1657 states and 2737 transitions. [2024-11-23 22:36:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:13,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 73 [2024-11-23 22:36:13,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:13,672 INFO L225 Difference]: With dead ends: 1657 [2024-11-23 22:36:13,673 INFO L226 Difference]: Without dead ends: 1169 [2024-11-23 22:36:13,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:13,677 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1976 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:13,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2044 Valid, 1129 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 22:36:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-23 22:36:13,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1047. [2024-11-23 22:36:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 810 states have (on average 1.651851851851852) internal successors, (1338), 840 states have internal predecessors, (1338), 192 states have call successors, (192), 43 states have call predecessors, (192), 44 states have return successors, (194), 176 states have call predecessors, (194), 187 states have call successors, (194) [2024-11-23 22:36:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1724 transitions. [2024-11-23 22:36:13,760 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1724 transitions. Word has length 73 [2024-11-23 22:36:13,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:13,761 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1724 transitions. [2024-11-23 22:36:13,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-23 22:36:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1724 transitions. [2024-11-23 22:36:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:36:13,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:13,767 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:13,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:36:13,767 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:13,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash -802970203, now seen corresponding path program 1 times [2024-11-23 22:36:13,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:13,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67414015] [2024-11-23 22:36:13,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 22:36:14,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:14,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67414015] [2024-11-23 22:36:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67414015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:14,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:14,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:36:14,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314916865] [2024-11-23 22:36:14,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:14,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:36:14,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:14,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:36:14,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:14,319 INFO L87 Difference]: Start difference. First operand 1047 states and 1724 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-23 22:36:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:23,139 INFO L93 Difference]: Finished difference Result 3836 states and 6335 transitions. [2024-11-23 22:36:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 22:36:23,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 125 [2024-11-23 22:36:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:23,167 INFO L225 Difference]: With dead ends: 3836 [2024-11-23 22:36:23,167 INFO L226 Difference]: Without dead ends: 2834 [2024-11-23 22:36:23,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:36:23,178 INFO L435 NwaCegarLoop]: 751 mSDtfsCounter, 2789 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 9505 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 4550 SdHoareTripleChecker+Invalid, 10431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 9505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:23,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2867 Valid, 4550 Invalid, 10431 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [926 Valid, 9505 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-23 22:36:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2024-11-23 22:36:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2740. [2024-11-23 22:36:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2047 states have (on average 1.617000488519785) internal successors, (3310), 2123 states have internal predecessors, (3310), 574 states have call successors, (574), 101 states have call predecessors, (574), 118 states have return successors, (607), 548 states have call predecessors, (607), 569 states have call successors, (607) [2024-11-23 22:36:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 4491 transitions. [2024-11-23 22:36:23,516 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 4491 transitions. Word has length 125 [2024-11-23 22:36:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:23,517 INFO L471 AbstractCegarLoop]: Abstraction has 2740 states and 4491 transitions. [2024-11-23 22:36:23,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-23 22:36:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 4491 transitions. [2024-11-23 22:36:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 22:36:23,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:23,523 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 22:36:23,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:36:23,524 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:23,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1792487003, now seen corresponding path program 1 times [2024-11-23 22:36:23,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:23,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650199734] [2024-11-23 22:36:23,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:23,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:36:23,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:23,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650199734] [2024-11-23 22:36:23,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650199734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576743724] [2024-11-23 22:36:23,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:23,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:23,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:23,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:23,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:36:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:24,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:24,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:36:24,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:24,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576743724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:24,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:24,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 22:36:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142552839] [2024-11-23 22:36:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:24,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:24,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:24,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:24,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:24,638 INFO L87 Difference]: Start difference. First operand 2740 states and 4491 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:25,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:25,728 INFO L93 Difference]: Finished difference Result 5499 states and 9186 transitions. [2024-11-23 22:36:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:25,729 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2024-11-23 22:36:25,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:25,758 INFO L225 Difference]: With dead ends: 5499 [2024-11-23 22:36:25,759 INFO L226 Difference]: Without dead ends: 2804 [2024-11-23 22:36:25,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:25,785 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 811 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:25,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2146 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:36:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2024-11-23 22:36:26,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2804. [2024-11-23 22:36:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2103 states have (on average 1.619591060389919) internal successors, (3406), 2179 states have internal predecessors, (3406), 574 states have call successors, (574), 109 states have call predecessors, (574), 126 states have return successors, (613), 548 states have call predecessors, (613), 569 states have call successors, (613) [2024-11-23 22:36:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4593 transitions. [2024-11-23 22:36:26,063 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4593 transitions. Word has length 126 [2024-11-23 22:36:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:26,063 INFO L471 AbstractCegarLoop]: Abstraction has 2804 states and 4593 transitions. [2024-11-23 22:36:26,064 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4593 transitions. [2024-11-23 22:36:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 22:36:26,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:26,069 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:26,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:36:26,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 22:36:26,273 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:26,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2124483265, now seen corresponding path program 1 times [2024-11-23 22:36:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:26,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687177152] [2024-11-23 22:36:26,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:36:26,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:26,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687177152] [2024-11-23 22:36:26,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687177152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:26,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107674165] [2024-11-23 22:36:26,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:26,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:26,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:26,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:26,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:36:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:27,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:27,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:36:27,251 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:27,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107674165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:27,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:27,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 22:36:27,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445445215] [2024-11-23 22:36:27,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:27,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:27,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:27,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:27,254 INFO L87 Difference]: Start difference. First operand 2804 states and 4593 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:28,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:28,184 INFO L93 Difference]: Finished difference Result 5627 states and 9372 transitions. [2024-11-23 22:36:28,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:28,184 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-23 22:36:28,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:28,211 INFO L225 Difference]: With dead ends: 5627 [2024-11-23 22:36:28,211 INFO L226 Difference]: Without dead ends: 2868 [2024-11-23 22:36:28,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:28,234 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 808 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:28,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2143 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:36:28,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2024-11-23 22:36:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2868. [2024-11-23 22:36:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2159 states have (on average 1.6220472440944882) internal successors, (3502), 2235 states have internal predecessors, (3502), 574 states have call successors, (574), 117 states have call predecessors, (574), 134 states have return successors, (619), 548 states have call predecessors, (619), 569 states have call successors, (619) [2024-11-23 22:36:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 4695 transitions. [2024-11-23 22:36:28,487 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 4695 transitions. Word has length 128 [2024-11-23 22:36:28,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:28,488 INFO L471 AbstractCegarLoop]: Abstraction has 2868 states and 4695 transitions. [2024-11-23 22:36:28,488 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 4695 transitions. [2024-11-23 22:36:28,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-23 22:36:28,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:28,494 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:28,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:28,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 22:36:28,698 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:28,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1472232283, now seen corresponding path program 1 times [2024-11-23 22:36:28,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:28,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495765116] [2024-11-23 22:36:28,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:36:28,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495765116] [2024-11-23 22:36:28,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495765116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699951428] [2024-11-23 22:36:28,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:28,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:28,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:28,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:28,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:36:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:29,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:29,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:36:29,590 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:29,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699951428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:29,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 22:36:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418865126] [2024-11-23 22:36:29,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:29,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:29,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:29,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:29,593 INFO L87 Difference]: Start difference. First operand 2868 states and 4695 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:30,530 INFO L93 Difference]: Finished difference Result 5755 states and 9558 transitions. [2024-11-23 22:36:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:30,531 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2024-11-23 22:36:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:30,559 INFO L225 Difference]: With dead ends: 5755 [2024-11-23 22:36:30,559 INFO L226 Difference]: Without dead ends: 2932 [2024-11-23 22:36:30,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:30,581 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 800 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:30,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 2140 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:36:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2024-11-23 22:36:30,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2932. [2024-11-23 22:36:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2215 states have (on average 1.6243792325056434) internal successors, (3598), 2291 states have internal predecessors, (3598), 574 states have call successors, (574), 125 states have call predecessors, (574), 142 states have return successors, (625), 548 states have call predecessors, (625), 569 states have call successors, (625) [2024-11-23 22:36:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 4797 transitions. [2024-11-23 22:36:30,843 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 4797 transitions. Word has length 130 [2024-11-23 22:36:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:30,844 INFO L471 AbstractCegarLoop]: Abstraction has 2932 states and 4797 transitions. [2024-11-23 22:36:30,844 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 4797 transitions. [2024-11-23 22:36:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 22:36:30,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:30,850 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:30,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:31,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:31,055 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:31,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash 150547271, now seen corresponding path program 1 times [2024-11-23 22:36:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:31,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826279196] [2024-11-23 22:36:31,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:31,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:31,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:36:31,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:31,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826279196] [2024-11-23 22:36:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826279196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:31,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834519744] [2024-11-23 22:36:31,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:31,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:31,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:31,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:31,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:36:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:31,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:31,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:36:31,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834519744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:31,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-23 22:36:31,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516147111] [2024-11-23 22:36:31,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:31,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:31,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:31,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:31,870 INFO L87 Difference]: Start difference. First operand 2932 states and 4797 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:32,808 INFO L93 Difference]: Finished difference Result 5883 states and 9744 transitions. [2024-11-23 22:36:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:32,809 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-23 22:36:32,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:32,843 INFO L225 Difference]: With dead ends: 5883 [2024-11-23 22:36:32,843 INFO L226 Difference]: Without dead ends: 2996 [2024-11-23 22:36:32,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:32,864 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 795 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:32,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 2137 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:36:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2024-11-23 22:36:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2996. [2024-11-23 22:36:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2271 states have (on average 1.6265962131219727) internal successors, (3694), 2347 states have internal predecessors, (3694), 574 states have call successors, (574), 133 states have call predecessors, (574), 150 states have return successors, (631), 548 states have call predecessors, (631), 569 states have call successors, (631) [2024-11-23 22:36:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 4899 transitions. [2024-11-23 22:36:33,123 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 4899 transitions. Word has length 132 [2024-11-23 22:36:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:33,124 INFO L471 AbstractCegarLoop]: Abstraction has 2996 states and 4899 transitions. [2024-11-23 22:36:33,125 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 4899 transitions. [2024-11-23 22:36:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 22:36:33,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:33,132 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:33,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:33,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-23 22:36:33,337 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:33,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -815404635, now seen corresponding path program 1 times [2024-11-23 22:36:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94694358] [2024-11-23 22:36:33,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 22:36:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94694358] [2024-11-23 22:36:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94694358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:33,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781139544] [2024-11-23 22:36:33,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:33,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:33,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:33,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:36:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:34,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:34,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 22:36:34,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:34,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781139544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:34,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:34,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2024-11-23 22:36:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272961183] [2024-11-23 22:36:34,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:34,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:34,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:34,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:34,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:36:34,595 INFO L87 Difference]: Start difference. First operand 2996 states and 4899 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-23 22:36:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:35,465 INFO L93 Difference]: Finished difference Result 3108 states and 5084 transitions. [2024-11-23 22:36:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:35,465 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 134 [2024-11-23 22:36:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:35,491 INFO L225 Difference]: With dead ends: 3108 [2024-11-23 22:36:35,491 INFO L226 Difference]: Without dead ends: 3093 [2024-11-23 22:36:35,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:36:35,495 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 826 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:35,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 2170 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:36:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2024-11-23 22:36:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3002. [2024-11-23 22:36:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2277 states have (on average 1.6249451032059727) internal successors, (3700), 2353 states have internal predecessors, (3700), 574 states have call successors, (574), 133 states have call predecessors, (574), 150 states have return successors, (631), 548 states have call predecessors, (631), 569 states have call successors, (631) [2024-11-23 22:36:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4905 transitions. [2024-11-23 22:36:35,711 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4905 transitions. Word has length 134 [2024-11-23 22:36:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:35,712 INFO L471 AbstractCegarLoop]: Abstraction has 3002 states and 4905 transitions. [2024-11-23 22:36:35,712 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-23 22:36:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4905 transitions. [2024-11-23 22:36:35,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:36:35,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:35,718 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:35,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:35,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 22:36:35,919 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:35,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:35,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1164615776, now seen corresponding path program 1 times [2024-11-23 22:36:35,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:35,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287238780] [2024-11-23 22:36:35,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:35,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 22:36:36,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287238780] [2024-11-23 22:36:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287238780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725065599] [2024-11-23 22:36:36,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:36,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:36,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:36,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:36,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:36:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:36,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:36:36,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 22:36:37,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:37,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725065599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:37,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:37,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-23 22:36:37,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504788652] [2024-11-23 22:36:37,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:37,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:36:37,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:37,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:36:37,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:36:37,031 INFO L87 Difference]: Start difference. First operand 3002 states and 4905 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:37,656 INFO L93 Difference]: Finished difference Result 3206 states and 5205 transitions. [2024-11-23 22:36:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:37,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-23 22:36:37,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:37,683 INFO L225 Difference]: With dead ends: 3206 [2024-11-23 22:36:37,683 INFO L226 Difference]: Without dead ends: 3191 [2024-11-23 22:36:37,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:36:37,688 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 788 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:37,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 3371 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:36:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2024-11-23 22:36:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3170. [2024-11-23 22:36:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 2413 states have (on average 1.6195607128056362) internal successors, (3908), 2489 states have internal predecessors, (3908), 590 states have call successors, (590), 149 states have call predecessors, (590), 166 states have return successors, (657), 564 states have call predecessors, (657), 585 states have call successors, (657) [2024-11-23 22:36:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 5155 transitions. [2024-11-23 22:36:37,954 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 5155 transitions. Word has length 140 [2024-11-23 22:36:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:37,954 INFO L471 AbstractCegarLoop]: Abstraction has 3170 states and 5155 transitions. [2024-11-23 22:36:37,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 22:36:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 5155 transitions. [2024-11-23 22:36:37,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 22:36:37,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:37,962 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:37,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 22:36:38,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 22:36:38,163 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:38,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash 850601932, now seen corresponding path program 1 times [2024-11-23 22:36:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:38,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222843082] [2024-11-23 22:36:38,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:38,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 22:36:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222843082] [2024-11-23 22:36:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222843082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705411109] [2024-11-23 22:36:38,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:38,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:38,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:38,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:38,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:36:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:39,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 22:36:39,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 22:36:39,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705411109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:39,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-23 22:36:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067309884] [2024-11-23 22:36:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:39,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:36:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:39,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:36:39,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:36:39,430 INFO L87 Difference]: Start difference. First operand 3170 states and 5155 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-23 22:36:44,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:44,233 INFO L93 Difference]: Finished difference Result 11314 states and 18683 transitions. [2024-11-23 22:36:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:36:44,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 151 [2024-11-23 22:36:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:44,309 INFO L225 Difference]: With dead ends: 11314 [2024-11-23 22:36:44,309 INFO L226 Difference]: Without dead ends: 8195 [2024-11-23 22:36:44,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-23 22:36:44,329 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 2338 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 5198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:44,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 2729 Invalid, 5198 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [520 Valid, 4678 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 22:36:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8195 states. [2024-11-23 22:36:44,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8195 to 7708. [2024-11-23 22:36:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 5909 states have (on average 1.6283635132848198) internal successors, (9622), 6094 states have internal predecessors, (9622), 1362 states have call successors, (1362), 353 states have call predecessors, (1362), 436 states have return successors, (1641), 1326 states have call predecessors, (1641), 1357 states have call successors, (1641) [2024-11-23 22:36:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 12625 transitions. [2024-11-23 22:36:44,965 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 12625 transitions. Word has length 151 [2024-11-23 22:36:44,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:44,966 INFO L471 AbstractCegarLoop]: Abstraction has 7708 states and 12625 transitions. [2024-11-23 22:36:44,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-23 22:36:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 12625 transitions. [2024-11-23 22:36:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-23 22:36:44,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:44,973 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:44,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 22:36:45,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 22:36:45,175 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:45,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1190868620, now seen corresponding path program 1 times [2024-11-23 22:36:45,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:45,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224912677] [2024-11-23 22:36:45,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:45,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:45,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:45,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224912677] [2024-11-23 22:36:45,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224912677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:45,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110488773] [2024-11-23 22:36:45,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:45,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:45,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:45,766 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:45,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 22:36:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:46,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 1756 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 22:36:46,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:46,593 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:46,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110488773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:46,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:46,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-23 22:36:46,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786966859] [2024-11-23 22:36:46,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:46,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:36:46,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:46,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:36:46,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:36:46,599 INFO L87 Difference]: Start difference. First operand 7708 states and 12625 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-23 22:36:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:50,393 INFO L93 Difference]: Finished difference Result 16752 states and 27628 transitions. [2024-11-23 22:36:50,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:36:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 153 [2024-11-23 22:36:50,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:50,468 INFO L225 Difference]: With dead ends: 16752 [2024-11-23 22:36:50,468 INFO L226 Difference]: Without dead ends: 9095 [2024-11-23 22:36:50,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:36:50,507 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 2084 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 3368 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 3368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:50,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 2179 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 3368 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 22:36:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9095 states. [2024-11-23 22:36:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9095 to 8146. [2024-11-23 22:36:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8146 states, 6227 states have (on average 1.6155452063594027) internal successors, (10060), 6448 states have internal predecessors, (10060), 1410 states have call successors, (1410), 383 states have call predecessors, (1410), 508 states have return successors, (1805), 1380 states have call predecessors, (1805), 1405 states have call successors, (1805) [2024-11-23 22:36:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8146 states to 8146 states and 13275 transitions. [2024-11-23 22:36:51,245 INFO L78 Accepts]: Start accepts. Automaton has 8146 states and 13275 transitions. Word has length 153 [2024-11-23 22:36:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:51,245 INFO L471 AbstractCegarLoop]: Abstraction has 8146 states and 13275 transitions. [2024-11-23 22:36:51,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-23 22:36:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8146 states and 13275 transitions. [2024-11-23 22:36:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 22:36:51,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:51,253 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:51,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:51,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-23 22:36:51,458 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:51,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1361141167, now seen corresponding path program 1 times [2024-11-23 22:36:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395287379] [2024-11-23 22:36:51,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:51,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:51,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395287379] [2024-11-23 22:36:51,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395287379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:51,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580377812] [2024-11-23 22:36:51,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:51,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:51,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:51,938 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:51,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 22:36:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:52,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:36:52,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 22:36:52,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:52,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580377812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:52,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:52,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-23 22:36:52,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161421481] [2024-11-23 22:36:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:52,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:52,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:52,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:52,470 INFO L87 Difference]: Start difference. First operand 8146 states and 13275 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:53,182 INFO L93 Difference]: Finished difference Result 20485 states and 33791 transitions. [2024-11-23 22:36:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2024-11-23 22:36:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:53,285 INFO L225 Difference]: With dead ends: 20485 [2024-11-23 22:36:53,286 INFO L226 Difference]: Without dead ends: 12393 [2024-11-23 22:36:53,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:53,333 INFO L435 NwaCegarLoop]: 1531 mSDtfsCounter, 801 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:53,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2382 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12393 states. [2024-11-23 22:36:54,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12393 to 8122. [2024-11-23 22:36:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8122 states, 6215 states have (on average 1.6148028962188254) internal successors, (10036), 6424 states have internal predecessors, (10036), 1410 states have call successors, (1410), 383 states have call predecessors, (1410), 496 states have return successors, (1751), 1380 states have call predecessors, (1751), 1405 states have call successors, (1751) [2024-11-23 22:36:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8122 states to 8122 states and 13197 transitions. [2024-11-23 22:36:54,459 INFO L78 Accepts]: Start accepts. Automaton has 8122 states and 13197 transitions. Word has length 158 [2024-11-23 22:36:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:54,459 INFO L471 AbstractCegarLoop]: Abstraction has 8122 states and 13197 transitions. [2024-11-23 22:36:54,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 8122 states and 13197 transitions. [2024-11-23 22:36:54,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 22:36:54,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:54,472 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:54,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 22:36:54,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-23 22:36:54,673 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:54,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:54,675 INFO L85 PathProgramCache]: Analyzing trace with hash -467654829, now seen corresponding path program 1 times [2024-11-23 22:36:54,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:54,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92501203] [2024-11-23 22:36:54,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:54,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:55,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:55,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92501203] [2024-11-23 22:36:55,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92501203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:55,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050025466] [2024-11-23 22:36:55,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:55,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:55,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:55,197 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:55,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 22:36:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:55,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 22:36:55,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:55,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:55,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050025466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:55,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:55,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 22:36:55,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140867453] [2024-11-23 22:36:55,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:55,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:55,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:55,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:36:55,923 INFO L87 Difference]: Start difference. First operand 8122 states and 13197 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:58,630 INFO L93 Difference]: Finished difference Result 21692 states and 35866 transitions. [2024-11-23 22:36:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:58,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 158 [2024-11-23 22:36:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:58,720 INFO L225 Difference]: With dead ends: 21692 [2024-11-23 22:36:58,721 INFO L226 Difference]: Without dead ends: 13615 [2024-11-23 22:36:58,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:36:58,755 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 1877 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:58,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 938 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 22:36:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2024-11-23 22:36:59,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 13025. [2024-11-23 22:36:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13025 states, 9851 states have (on average 1.6045071566338442) internal successors, (15806), 10231 states have internal predecessors, (15806), 2370 states have call successors, (2370), 596 states have call predecessors, (2370), 803 states have return successors, (3185), 2359 states have call predecessors, (3185), 2365 states have call successors, (3185) [2024-11-23 22:36:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13025 states to 13025 states and 21361 transitions. [2024-11-23 22:36:59,821 INFO L78 Accepts]: Start accepts. Automaton has 13025 states and 21361 transitions. Word has length 158 [2024-11-23 22:36:59,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:59,822 INFO L471 AbstractCegarLoop]: Abstraction has 13025 states and 21361 transitions. [2024-11-23 22:36:59,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 13025 states and 21361 transitions. [2024-11-23 22:36:59,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-23 22:36:59,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:59,830 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:59,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 22:37:00,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:00,035 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:00,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:00,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1612678771, now seen corresponding path program 1 times [2024-11-23 22:37:00,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:00,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631195019] [2024-11-23 22:37:00,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:00,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:37:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:00,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631195019] [2024-11-23 22:37:00,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631195019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:00,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667308303] [2024-11-23 22:37:00,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:00,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:00,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:00,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:00,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 22:37:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:00,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 22:37:00,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:37:01,002 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:01,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667308303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:01,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:01,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 22:37:01,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115803416] [2024-11-23 22:37:01,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:01,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:01,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:01,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:01,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:37:01,004 INFO L87 Difference]: Start difference. First operand 13025 states and 21361 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:37:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:05,096 INFO L93 Difference]: Finished difference Result 37853 states and 64194 transitions. [2024-11-23 22:37:05,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:37:05,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2024-11-23 22:37:05,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:05,310 INFO L225 Difference]: With dead ends: 37853 [2024-11-23 22:37:05,310 INFO L226 Difference]: Without dead ends: 24873 [2024-11-23 22:37:05,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:37:05,398 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 1880 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:05,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 909 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 22:37:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24873 states. [2024-11-23 22:37:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24873 to 23814. [2024-11-23 22:37:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23814 states, 17708 states have (on average 1.5937429410435962) internal successors, (28222), 18502 states have internal predecessors, (28222), 4646 states have call successors, (4646), 1022 states have call predecessors, (4646), 1459 states have return successors, (7091), 4697 states have call predecessors, (7091), 4641 states have call successors, (7091) [2024-11-23 22:37:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23814 states to 23814 states and 39959 transitions. [2024-11-23 22:37:07,917 INFO L78 Accepts]: Start accepts. Automaton has 23814 states and 39959 transitions. Word has length 159 [2024-11-23 22:37:07,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:07,918 INFO L471 AbstractCegarLoop]: Abstraction has 23814 states and 39959 transitions. [2024-11-23 22:37:07,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:37:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 23814 states and 39959 transitions. [2024-11-23 22:37:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-23 22:37:07,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:07,927 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:07,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:08,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:08,128 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:08,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1546288597, now seen corresponding path program 1 times [2024-11-23 22:37:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542998679] [2024-11-23 22:37:08,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:37:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542998679] [2024-11-23 22:37:09,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542998679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929116687] [2024-11-23 22:37:09,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:09,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:09,309 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:09,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 22:37:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:09,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 22:37:09,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:37:10,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929116687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:10,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:10,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 22:37:10,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023716323] [2024-11-23 22:37:10,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:10,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:10,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:10,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:10,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:37:10,104 INFO L87 Difference]: Start difference. First operand 23814 states and 39959 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:37:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:15,709 INFO L93 Difference]: Finished difference Result 73815 states and 131287 transitions. [2024-11-23 22:37:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:37:15,710 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), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2024-11-23 22:37:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:16,148 INFO L225 Difference]: With dead ends: 73815 [2024-11-23 22:37:16,148 INFO L226 Difference]: Without dead ends: 50046 [2024-11-23 22:37:16,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:37:16,278 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 1867 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:16,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1943 Valid, 905 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 22:37:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50046 states. [2024-11-23 22:37:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50046 to 48014. [2024-11-23 22:37:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48014 states, 34975 states have (on average 1.5825589706933525) internal successors, (55350), 36783 states have internal predecessors, (55350), 10159 states have call successors, (10159), 1874 states have call predecessors, (10159), 2879 states have return successors, (18318), 10406 states have call predecessors, (18318), 10154 states have call successors, (18318) [2024-11-23 22:37:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48014 states to 48014 states and 83827 transitions. [2024-11-23 22:37:21,617 INFO L78 Accepts]: Start accepts. Automaton has 48014 states and 83827 transitions. Word has length 160 [2024-11-23 22:37:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:21,618 INFO L471 AbstractCegarLoop]: Abstraction has 48014 states and 83827 transitions. [2024-11-23 22:37:21,618 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), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:37:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 48014 states and 83827 transitions. [2024-11-23 22:37:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-23 22:37:21,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:21,625 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:21,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:21,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 22:37:21,826 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:21,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash 690033103, now seen corresponding path program 1 times [2024-11-23 22:37:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:21,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867040677] [2024-11-23 22:37:21,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:37:22,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:22,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867040677] [2024-11-23 22:37:22,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867040677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:22,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132433449] [2024-11-23 22:37:22,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:22,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:22,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:22,444 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:22,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41634dde-e7a0-4ea0-bab8-e19e9df6416e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 22:37:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:22,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 22:37:22,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:37:22,970 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132433449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:22,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 22:37:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638243908] [2024-11-23 22:37:22,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:22,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:22,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:22,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:37:22,972 INFO L87 Difference]: Start difference. First operand 48014 states and 83827 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:37:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:34,607 INFO L93 Difference]: Finished difference Result 155496 states and 299028 transitions. [2024-11-23 22:37:34,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:37:34,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2024-11-23 22:37:34,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:35,700 INFO L225 Difference]: With dead ends: 155496 [2024-11-23 22:37:35,701 INFO L226 Difference]: Without dead ends: 107527 [2024-11-23 22:37:36,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:37:36,146 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 1854 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:36,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1929 Valid, 904 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 22:37:36,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107527 states.