./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/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_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/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_5eec8e4b-e035-49ac-b632-7544e15172bb/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 ca4739abfecd00b8d2b799ccc2617c6e4b4e221f88b8a7e722070835771a8404 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:42:38,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:42:39,046 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:42:39,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:42:39,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:42:39,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:42:39,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:42:39,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:42:39,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:42:39,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:42:39,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:42:39,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:42:39,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:42:39,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:42:39,080 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:42:39,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:42:39,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:42:39,080 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:42:39,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:42:39,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:42:39,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:42:39,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:42:39,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:42:39,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:42:39,081 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:42:39,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:42:39,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:42:39,082 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:42:39,082 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:42:39,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:42:39,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:42:39,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:42:39,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:42:39,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:42:39,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:42:39,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:42:39,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:42:39,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:42:39,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:42:39,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:42:39,084 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:42:39,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:42:39,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:42:39,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:42:39,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:42:39,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:42:39,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:42:39,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:42:39,085 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_5eec8e4b-e035-49ac-b632-7544e15172bb/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 -> ca4739abfecd00b8d2b799ccc2617c6e4b4e221f88b8a7e722070835771a8404 [2024-11-23 22:42:39,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:42:39,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:42:39,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:42:39,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:42:39,418 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:42:39,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c [2024-11-23 22:42:42,449 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/data/fbc767339/97a756975d314890b1a565ce37e350f5/FLAG88c91cd30 [2024-11-23 22:42:42,941 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:42:42,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c [2024-11-23 22:42:42,968 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/data/fbc767339/97a756975d314890b1a565ce37e350f5/FLAG88c91cd30 [2024-11-23 22:42:43,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/data/fbc767339/97a756975d314890b1a565ce37e350f5 [2024-11-23 22:42:43,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:42:43,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:42:43,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:42:43,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:42:43,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:42:43,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:42:43" (1/1) ... [2024-11-23 22:42:43,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3c39ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:43, skipping insertion in model container [2024-11-23 22:42:43,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:42:43" (1/1) ... [2024-11-23 22:42:43,127 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:42:43,913 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_5eec8e4b-e035-49ac-b632-7544e15172bb/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c[64142,64155] [2024-11-23 22:42:43,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:42:43,937 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:42:43,950 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [48] [2024-11-23 22:42:43,951 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"AddressBookEncrypt_spec.i","") [66] [2024-11-23 22:42:43,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [108] [2024-11-23 22:42:43,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [489] [2024-11-23 22:42:43,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [855] [2024-11-23 22:42:43,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [992] [2024-11-23 22:42:43,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1217] [2024-11-23 22:42:43,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1255] [2024-11-23 22:42:43,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1537] [2024-11-23 22:42:43,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1934] [2024-11-23 22:42:43,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3001] [2024-11-23 22:42:44,096 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_5eec8e4b-e035-49ac-b632-7544e15172bb/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c[64142,64155] [2024-11-23 22:42:44,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:42:44,134 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:42:44,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44 WrapperNode [2024-11-23 22:42:44,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:42:44,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:42:44,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:42:44,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:42:44,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,228 INFO L138 Inliner]: procedures = 131, calls = 204, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1028 [2024-11-23 22:42:44,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:42:44,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:42:44,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:42:44,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:42:44,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,297 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-11-23 22:42:44,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,330 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:42:44,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:42:44,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:42:44,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:42:44,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (1/1) ... [2024-11-23 22:42:44,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:42:44,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:42:44,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:42:44,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:42:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-23 22:42:44,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-23 22:42:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-23 22:42:44,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-23 22:42:44,506 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-23 22:42:44,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-23 22:42:44,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-23 22:42:44,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-23 22:42:44,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-23 22:42:44,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-23 22:42:44,508 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-23 22:42:44,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-23 22:42:44,509 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-23 22:42:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-23 22:42:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-23 22:42:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-23 22:42:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-23 22:42:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-23 22:42:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-23 22:42:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-23 22:42:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-23 22:42:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-23 22:42:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-23 22:42:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-23 22:42:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:42:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-23 22:42:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-23 22:42:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-23 22:42:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-23 22:42:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-23 22:42:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-23 22:42:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-23 22:42:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-23 22:42:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-23 22:42:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-23 22:42:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-23 22:42:44,512 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-23 22:42:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-23 22:42:44,515 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-23 22:42:44,515 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-23 22:42:44,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-23 22:42:44,515 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-23 22:42:44,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-23 22:42:44,515 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-23 22:42:44,516 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-23 22:42:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:42:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:42:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:42:44,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:42:44,518 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-23 22:42:44,519 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-23 22:42:44,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:42:44,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:42:44,817 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:42:44,820 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:42:46,229 INFO L? ?]: Removed 476 outVars from TransFormulas that were not future-live. [2024-11-23 22:42:46,229 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:42:46,259 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:42:46,259 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:42:46,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:42:46 BoogieIcfgContainer [2024-11-23 22:42:46,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:42:46,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:42:46,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:42:46,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:42:46,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:42:43" (1/3) ... [2024-11-23 22:42:46,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e124574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:42:46, skipping insertion in model container [2024-11-23 22:42:46,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:42:44" (2/3) ... [2024-11-23 22:42:46,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e124574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:42:46, skipping insertion in model container [2024-11-23 22:42:46,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:42:46" (3/3) ... [2024-11-23 22:42:46,277 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec1_product31.cil.c [2024-11-23 22:42:46,294 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:42:46,297 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec1_product31.cil.c that has 24 procedures, 368 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:42:46,386 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:42:46,401 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;@77421941, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:42:46,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:42:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 368 states, 284 states have (on average 1.5035211267605635) internal successors, (427), 288 states have internal predecessors, (427), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-23 22:42:46,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 22:42:46,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:46,428 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:46,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:46,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:46,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1796025047, now seen corresponding path program 1 times [2024-11-23 22:42:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997901259] [2024-11-23 22:42:46,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 22:42:47,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:47,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997901259] [2024-11-23 22:42:47,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997901259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:47,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809465375] [2024-11-23 22:42:47,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:47,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:47,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:42:47,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:42:47,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:42:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:47,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:42:47,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:42:47,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:42:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809465375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:47,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:42:47,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-23 22:42:47,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843440863] [2024-11-23 22:42:47,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:47,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:42:47,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:47,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:42:47,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:47,859 INFO L87 Difference]: Start difference. First operand has 368 states, 284 states have (on average 1.5035211267605635) internal successors, (427), 288 states have internal predecessors, (427), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:47,948 INFO L93 Difference]: Finished difference Result 583 states and 845 transitions. [2024-11-23 22:42:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:42:47,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2024-11-23 22:42:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:47,969 INFO L225 Difference]: With dead ends: 583 [2024-11-23 22:42:47,970 INFO L226 Difference]: Without dead ends: 361 [2024-11-23 22:42:47,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:47,983 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:47,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-23 22:42:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-23 22:42:48,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 278 states have (on average 1.4964028776978417) internal successors, (416), 281 states have internal predecessors, (416), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-23 22:42:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 533 transitions. [2024-11-23 22:42:48,091 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 533 transitions. Word has length 101 [2024-11-23 22:42:48,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:48,094 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 533 transitions. [2024-11-23 22:42:48,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 533 transitions. [2024-11-23 22:42:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 22:42:48,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:48,104 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:48,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:42:48,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:42:48,309 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:48,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -494837789, now seen corresponding path program 1 times [2024-11-23 22:42:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319861672] [2024-11-23 22:42:48,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 22:42:48,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:48,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319861672] [2024-11-23 22:42:48,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319861672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:48,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200538482] [2024-11-23 22:42:48,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:48,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:48,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:42:48,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:42:48,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:42:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:49,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:42:49,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:42:49,190 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:42:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200538482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:49,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:42:49,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:42:49,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673776285] [2024-11-23 22:42:49,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:49,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:49,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:49,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:42:49,196 INFO L87 Difference]: Start difference. First operand 361 states and 533 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:49,279 INFO L93 Difference]: Finished difference Result 572 states and 825 transitions. [2024-11-23 22:42:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:42:49,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2024-11-23 22:42:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:49,284 INFO L225 Difference]: With dead ends: 572 [2024-11-23 22:42:49,287 INFO L226 Difference]: Without dead ends: 363 [2024-11-23 22:42:49,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:42:49,295 INFO L435 NwaCegarLoop]: 531 mSDtfsCounter, 1 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:49,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1060 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-23 22:42:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 362. [2024-11-23 22:42:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 279 states have (on average 1.4946236559139785) internal successors, (417), 282 states have internal predecessors, (417), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-23 22:42:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 534 transitions. [2024-11-23 22:42:49,351 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 534 transitions. Word has length 101 [2024-11-23 22:42:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:49,351 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 534 transitions. [2024-11-23 22:42:49,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 534 transitions. [2024-11-23 22:42:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 22:42:49,360 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:49,361 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:49,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 22:42:49,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-23 22:42:49,562 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:49,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:49,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1841370148, now seen corresponding path program 1 times [2024-11-23 22:42:49,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:49,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386143052] [2024-11-23 22:42:49,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:49,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:42:49,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386143052] [2024-11-23 22:42:49,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386143052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100031907] [2024-11-23 22:42:49,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:49,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:49,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:42:49,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:42:49,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:42:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:50,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:42:50,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:42:50,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:42:50,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100031907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:50,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:42:50,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 22:42:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344477] [2024-11-23 22:42:50,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:50,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:50,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:50,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:50,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:42:50,394 INFO L87 Difference]: Start difference. First operand 362 states and 534 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:50,461 INFO L93 Difference]: Finished difference Result 754 states and 1127 transitions. [2024-11-23 22:42:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:42:50,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2024-11-23 22:42:50,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:50,465 INFO L225 Difference]: With dead ends: 754 [2024-11-23 22:42:50,467 INFO L226 Difference]: Without dead ends: 418 [2024-11-23 22:42:50,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:42:50,471 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 107 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:50,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1024 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-23 22:42:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 410. [2024-11-23 22:42:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 316 states have (on average 1.5126582278481013) internal successors, (478), 319 states have internal predecessors, (478), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-23 22:42:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 617 transitions. [2024-11-23 22:42:50,520 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 617 transitions. Word has length 106 [2024-11-23 22:42:50,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:50,521 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 617 transitions. [2024-11-23 22:42:50,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 617 transitions. [2024-11-23 22:42:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 22:42:50,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:50,526 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:50,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 22:42:50,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:50,731 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:50,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2093985356, now seen corresponding path program 1 times [2024-11-23 22:42:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:50,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122738883] [2024-11-23 22:42:50,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:42:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:51,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122738883] [2024-11-23 22:42:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122738883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:51,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928991088] [2024-11-23 22:42:51,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:51,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:51,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:42:51,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:42:51,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:42:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:51,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 22:42:51,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 22:42:51,438 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:42:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928991088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:51,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:42:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-23 22:42:51,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180001871] [2024-11-23 22:42:51,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:51,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:42:51,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:51,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:42:51,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:42:51,442 INFO L87 Difference]: Start difference. First operand 410 states and 617 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:51,561 INFO L93 Difference]: Finished difference Result 811 states and 1224 transitions. [2024-11-23 22:42:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:42:51,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2024-11-23 22:42:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:51,569 INFO L225 Difference]: With dead ends: 811 [2024-11-23 22:42:51,570 INFO L226 Difference]: Without dead ends: 412 [2024-11-23 22:42:51,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:42:51,577 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 2 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:51,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2089 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-23 22:42:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-11-23 22:42:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 317 states have (on average 1.5110410094637223) internal successors, (479), 321 states have internal predecessors, (479), 70 states have call successors, (70), 23 states have call predecessors, (70), 24 states have return successors, (71), 69 states have call predecessors, (71), 69 states have call successors, (71) [2024-11-23 22:42:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 620 transitions. [2024-11-23 22:42:51,620 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 620 transitions. Word has length 107 [2024-11-23 22:42:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:51,620 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 620 transitions. [2024-11-23 22:42:51,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 620 transitions. [2024-11-23 22:42:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-23 22:42:51,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:51,628 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:51,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 22:42:51,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:51,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:51,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash -5662128, now seen corresponding path program 1 times [2024-11-23 22:42:51,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:51,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164683515] [2024-11-23 22:42:51,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:51,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 22:42:52,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:52,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164683515] [2024-11-23 22:42:52,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164683515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:52,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695706802] [2024-11-23 22:42:52,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:52,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:42:52,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:42:52,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:42:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:52,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:42:52,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 22:42:52,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:42:52,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695706802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:52,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:42:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-23 22:42:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366226236] [2024-11-23 22:42:52,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:52,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:42:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:52,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:42:52,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:42:52,527 INFO L87 Difference]: Start difference. First operand 412 states and 620 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:52,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:52,624 INFO L93 Difference]: Finished difference Result 813 states and 1229 transitions. [2024-11-23 22:42:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:42:52,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2024-11-23 22:42:52,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:52,628 INFO L225 Difference]: With dead ends: 813 [2024-11-23 22:42:52,628 INFO L226 Difference]: Without dead ends: 414 [2024-11-23 22:42:52,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:42:52,632 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 2 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:52,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2075 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:42:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-23 22:42:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-23 22:42:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 318 states have (on average 1.509433962264151) internal successors, (480), 323 states have internal predecessors, (480), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2024-11-23 22:42:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 626 transitions. [2024-11-23 22:42:52,658 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 626 transitions. Word has length 108 [2024-11-23 22:42:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:52,659 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 626 transitions. [2024-11-23 22:42:52,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 626 transitions. [2024-11-23 22:42:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 22:42:52,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:52,666 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 22:42:52,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 22:42:52,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:52,867 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:52,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2143912213, now seen corresponding path program 1 times [2024-11-23 22:42:52,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:52,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085343982] [2024-11-23 22:42:52,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:42:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:53,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085343982] [2024-11-23 22:42:53,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085343982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:53,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:53,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:42:53,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324295801] [2024-11-23 22:42:53,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:53,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:42:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:53,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:42:53,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:53,085 INFO L87 Difference]: Start difference. First operand 414 states and 626 transitions. Second operand has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:53,164 INFO L93 Difference]: Finished difference Result 805 states and 1220 transitions. [2024-11-23 22:42:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:42:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2024-11-23 22:42:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:53,172 INFO L225 Difference]: With dead ends: 805 [2024-11-23 22:42:53,173 INFO L226 Difference]: Without dead ends: 414 [2024-11-23 22:42:53,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:53,175 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 2 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:53,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2093 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-23 22:42:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-23 22:42:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 318 states have (on average 1.509433962264151) internal successors, (480), 323 states have internal predecessors, (480), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (75), 69 states have call predecessors, (75), 69 states have call successors, (75) [2024-11-23 22:42:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 625 transitions. [2024-11-23 22:42:53,217 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 625 transitions. Word has length 109 [2024-11-23 22:42:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:53,220 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 625 transitions. [2024-11-23 22:42:53,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 625 transitions. [2024-11-23 22:42:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 22:42:53,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:53,223 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-23 22:42:53,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:42:53,224 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:53,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash 892850725, now seen corresponding path program 2 times [2024-11-23 22:42:53,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:53,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664722699] [2024-11-23 22:42:53,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:42:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:53,266 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:42:53,267 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:42:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 22:42:53,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:53,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664722699] [2024-11-23 22:42:53,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664722699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:53,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:53,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:42:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012369241] [2024-11-23 22:42:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:53,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:42:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:53,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:42:53,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:53,411 INFO L87 Difference]: Start difference. First operand 414 states and 625 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:53,492 INFO L93 Difference]: Finished difference Result 803 states and 1215 transitions. [2024-11-23 22:42:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:42:53,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2024-11-23 22:42:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:53,497 INFO L225 Difference]: With dead ends: 803 [2024-11-23 22:42:53,497 INFO L226 Difference]: Without dead ends: 414 [2024-11-23 22:42:53,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:53,511 INFO L435 NwaCegarLoop]: 524 mSDtfsCounter, 2 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:53,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2079 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:53,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-23 22:42:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-23 22:42:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 318 states have (on average 1.509433962264151) internal successors, (480), 323 states have internal predecessors, (480), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (74), 69 states have call predecessors, (74), 69 states have call successors, (74) [2024-11-23 22:42:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 624 transitions. [2024-11-23 22:42:53,537 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 624 transitions. Word has length 110 [2024-11-23 22:42:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:53,538 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 624 transitions. [2024-11-23 22:42:53,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 624 transitions. [2024-11-23 22:42:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 22:42:53,541 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:53,541 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:53,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:42:53,542 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:53,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 740103710, now seen corresponding path program 3 times [2024-11-23 22:42:53,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:53,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308649878] [2024-11-23 22:42:53,543 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:42:53,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:53,580 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:42:53,581 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:42:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 22:42:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308649878] [2024-11-23 22:42:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308649878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:53,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:53,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:42:53,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5943553] [2024-11-23 22:42:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:53,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:42:53,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:53,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:42:53,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:53,739 INFO L87 Difference]: Start difference. First operand 414 states and 624 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:53,817 INFO L93 Difference]: Finished difference Result 805 states and 1221 transitions. [2024-11-23 22:42:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:42:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2024-11-23 22:42:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:53,821 INFO L225 Difference]: With dead ends: 805 [2024-11-23 22:42:53,821 INFO L226 Difference]: Without dead ends: 416 [2024-11-23 22:42:53,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:53,823 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 1 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:53,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2090 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-23 22:42:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-11-23 22:42:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 319 states have (on average 1.5078369905956113) internal successors, (481), 325 states have internal predecessors, (481), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (79), 69 states have call predecessors, (79), 69 states have call successors, (79) [2024-11-23 22:42:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 630 transitions. [2024-11-23 22:42:53,846 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 630 transitions. Word has length 111 [2024-11-23 22:42:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:53,846 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 630 transitions. [2024-11-23 22:42:53,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 630 transitions. [2024-11-23 22:42:53,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 22:42:53,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:53,849 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:53,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:42:53,849 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:53,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:53,850 INFO L85 PathProgramCache]: Analyzing trace with hash -931651894, now seen corresponding path program 1 times [2024-11-23 22:42:53,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:53,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258028508] [2024-11-23 22:42:53,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:53,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 22:42:54,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:54,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258028508] [2024-11-23 22:42:54,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258028508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:54,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:54,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:42:54,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803444218] [2024-11-23 22:42:54,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:54,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:42:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:54,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:42:54,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:54,054 INFO L87 Difference]: Start difference. First operand 416 states and 630 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:54,122 INFO L93 Difference]: Finished difference Result 811 states and 1231 transitions. [2024-11-23 22:42:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:42:54,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2024-11-23 22:42:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:54,126 INFO L225 Difference]: With dead ends: 811 [2024-11-23 22:42:54,127 INFO L226 Difference]: Without dead ends: 418 [2024-11-23 22:42:54,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:42:54,130 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 1 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:54,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2096 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-23 22:42:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2024-11-23 22:42:54,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 320 states have (on average 1.50625) internal successors, (482), 327 states have internal predecessors, (482), 70 states have call successors, (70), 23 states have call predecessors, (70), 27 states have return successors, (81), 69 states have call predecessors, (81), 69 states have call successors, (81) [2024-11-23 22:42:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 633 transitions. [2024-11-23 22:42:54,159 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 633 transitions. Word has length 112 [2024-11-23 22:42:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:54,160 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 633 transitions. [2024-11-23 22:42:54,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 22:42:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 633 transitions. [2024-11-23 22:42:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 22:42:54,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:54,164 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:54,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:42:54,164 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:54,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1850424875, now seen corresponding path program 1 times [2024-11-23 22:42:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677204078] [2024-11-23 22:42:54,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:42:54,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:54,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677204078] [2024-11-23 22:42:54,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677204078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:42:54,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197365939] [2024-11-23 22:42:54,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:54,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:42:54,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:42:54,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:42:54,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:42:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:54,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:42:54,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:42:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:42:54,746 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:42:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:42:54,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197365939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:42:54,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:42:54,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-23 22:42:54,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055289976] [2024-11-23 22:42:54,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:42:54,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:42:54,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:54,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:42:54,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:42:54,871 INFO L87 Difference]: Start difference. First operand 418 states and 633 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:42:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:55,076 INFO L93 Difference]: Finished difference Result 973 states and 1525 transitions. [2024-11-23 22:42:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:42:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 113 [2024-11-23 22:42:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:55,085 INFO L225 Difference]: With dead ends: 973 [2024-11-23 22:42:55,086 INFO L226 Difference]: Without dead ends: 764 [2024-11-23 22:42:55,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:42:55,088 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 462 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:55,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1472 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:42:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-23 22:42:55,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 740. [2024-11-23 22:42:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 578 states have (on average 1.5813148788927336) internal successors, (914), 585 states have internal predecessors, (914), 134 states have call successors, (134), 23 states have call predecessors, (134), 27 states have return successors, (155), 133 states have call predecessors, (155), 133 states have call successors, (155) [2024-11-23 22:42:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1203 transitions. [2024-11-23 22:42:55,140 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1203 transitions. Word has length 113 [2024-11-23 22:42:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:55,140 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1203 transitions. [2024-11-23 22:42:55,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:42:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1203 transitions. [2024-11-23 22:42:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 22:42:55,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:55,145 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:55,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 22:42:55,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eec8e4b-e035-49ac-b632-7544e15172bb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 22:42:55,346 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:55,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:55,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1006573944, now seen corresponding path program 1 times [2024-11-23 22:42:55,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:55,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649076732] [2024-11-23 22:42:55,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:55,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:55,432 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 22:42:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:55,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649076732] [2024-11-23 22:42:55,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649076732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:55,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:55,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:42:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917448441] [2024-11-23 22:42:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:55,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:55,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:55,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:55,435 INFO L87 Difference]: Start difference. First operand 740 states and 1203 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:55,507 INFO L93 Difference]: Finished difference Result 1740 states and 2873 transitions. [2024-11-23 22:42:55,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:42:55,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2024-11-23 22:42:55,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:55,515 INFO L225 Difference]: With dead ends: 1740 [2024-11-23 22:42:55,515 INFO L226 Difference]: Without dead ends: 1066 [2024-11-23 22:42:55,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:55,519 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 105 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:55,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1081 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:55,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2024-11-23 22:42:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1058. [2024-11-23 22:42:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 832 states have (on average 1.6009615384615385) internal successors, (1332), 839 states have internal predecessors, (1332), 198 states have call successors, (198), 23 states have call predecessors, (198), 27 states have return successors, (229), 197 states have call predecessors, (229), 197 states have call successors, (229) [2024-11-23 22:42:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1759 transitions. [2024-11-23 22:42:55,583 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1759 transitions. Word has length 120 [2024-11-23 22:42:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:55,584 INFO L471 AbstractCegarLoop]: Abstraction has 1058 states and 1759 transitions. [2024-11-23 22:42:55,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1759 transitions. [2024-11-23 22:42:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 22:42:55,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:55,591 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:55,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:42:55,592 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:55,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1239827795, now seen corresponding path program 1 times [2024-11-23 22:42:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599300807] [2024-11-23 22:42:55,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:55,668 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 22:42:55,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:55,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599300807] [2024-11-23 22:42:55,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599300807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:55,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:55,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:42:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843969319] [2024-11-23 22:42:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:55,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:55,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:55,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:55,670 INFO L87 Difference]: Start difference. First operand 1058 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:55,747 INFO L93 Difference]: Finished difference Result 2503 states and 4189 transitions. [2024-11-23 22:42:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:42:55,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2024-11-23 22:42:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:55,758 INFO L225 Difference]: With dead ends: 2503 [2024-11-23 22:42:55,759 INFO L226 Difference]: Without dead ends: 1562 [2024-11-23 22:42:55,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:55,763 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 103 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:55,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1068 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2024-11-23 22:42:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1554. [2024-11-23 22:42:55,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1233 states have (on average 1.6147607461476075) internal successors, (1991), 1240 states have internal predecessors, (1991), 293 states have call successors, (293), 23 states have call predecessors, (293), 27 states have return successors, (324), 292 states have call predecessors, (324), 292 states have call successors, (324) [2024-11-23 22:42:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2608 transitions. [2024-11-23 22:42:55,893 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2608 transitions. Word has length 121 [2024-11-23 22:42:55,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:55,894 INFO L471 AbstractCegarLoop]: Abstraction has 1554 states and 2608 transitions. [2024-11-23 22:42:55,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2608 transitions. [2024-11-23 22:42:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 22:42:55,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:55,906 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:55,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:42:55,907 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:55,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash 645852410, now seen corresponding path program 1 times [2024-11-23 22:42:55,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:55,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224436726] [2024-11-23 22:42:55,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:55,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:56,005 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 22:42:56,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224436726] [2024-11-23 22:42:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224436726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:42:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742886841] [2024-11-23 22:42:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:56,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:56,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:56,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:56,008 INFO L87 Difference]: Start difference. First operand 1554 states and 2608 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:56,126 INFO L93 Difference]: Finished difference Result 3627 states and 6136 transitions. [2024-11-23 22:42:56,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:42:56,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2024-11-23 22:42:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:56,142 INFO L225 Difference]: With dead ends: 3627 [2024-11-23 22:42:56,143 INFO L226 Difference]: Without dead ends: 2311 [2024-11-23 22:42:56,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:56,149 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 101 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:56,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1055 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2024-11-23 22:42:56,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2303. [2024-11-23 22:42:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1859 states have (on average 1.6256051640667026) internal successors, (3022), 1866 states have internal predecessors, (3022), 416 states have call successors, (416), 23 states have call predecessors, (416), 27 states have return successors, (463), 415 states have call predecessors, (463), 415 states have call successors, (463) [2024-11-23 22:42:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3901 transitions. [2024-11-23 22:42:56,332 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3901 transitions. Word has length 122 [2024-11-23 22:42:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:56,333 INFO L471 AbstractCegarLoop]: Abstraction has 2303 states and 3901 transitions. [2024-11-23 22:42:56,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:56,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3901 transitions. [2024-11-23 22:42:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:42:56,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:56,347 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:56,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:42:56,347 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:56,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:56,348 INFO L85 PathProgramCache]: Analyzing trace with hash 840869486, now seen corresponding path program 1 times [2024-11-23 22:42:56,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:56,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863077270] [2024-11-23 22:42:56,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:56,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:56,451 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 22:42:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863077270] [2024-11-23 22:42:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863077270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:56,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:42:56,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152348071] [2024-11-23 22:42:56,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:56,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:56,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:56,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:56,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:56,453 INFO L87 Difference]: Start difference. First operand 2303 states and 3901 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:56,619 INFO L93 Difference]: Finished difference Result 5375 states and 9167 transitions. [2024-11-23 22:42:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:42:56,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2024-11-23 22:42:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:56,647 INFO L225 Difference]: With dead ends: 5375 [2024-11-23 22:42:56,647 INFO L226 Difference]: Without dead ends: 3507 [2024-11-23 22:42:56,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:56,656 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 99 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:56,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1055 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2024-11-23 22:42:56,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3499. [2024-11-23 22:42:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 2876 states have (on average 1.6328233657858136) internal successors, (4696), 2883 states have internal predecessors, (4696), 595 states have call successors, (595), 23 states have call predecessors, (595), 27 states have return successors, (668), 594 states have call predecessors, (668), 594 states have call successors, (668) [2024-11-23 22:42:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 5959 transitions. [2024-11-23 22:42:56,933 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 5959 transitions. Word has length 123 [2024-11-23 22:42:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:56,934 INFO L471 AbstractCegarLoop]: Abstraction has 3499 states and 5959 transitions. [2024-11-23 22:42:56,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 5959 transitions. [2024-11-23 22:42:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:42:56,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:56,952 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:56,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:42:56,953 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:56,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:56,953 INFO L85 PathProgramCache]: Analyzing trace with hash 237554070, now seen corresponding path program 1 times [2024-11-23 22:42:56,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:56,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425026921] [2024-11-23 22:42:56,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:57,045 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 22:42:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425026921] [2024-11-23 22:42:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425026921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:57,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:42:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181036106] [2024-11-23 22:42:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:57,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:57,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:57,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:57,048 INFO L87 Difference]: Start difference. First operand 3499 states and 5959 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:57,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:57,315 INFO L93 Difference]: Finished difference Result 8246 states and 14137 transitions. [2024-11-23 22:42:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:42:57,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-11-23 22:42:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:57,354 INFO L225 Difference]: With dead ends: 8246 [2024-11-23 22:42:57,354 INFO L226 Difference]: Without dead ends: 5483 [2024-11-23 22:42:57,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:57,366 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 97 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:57,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1072 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2024-11-23 22:42:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 5475. [2024-11-23 22:42:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 4476 states have (on average 1.6293565683646112) internal successors, (7293), 4483 states have internal predecessors, (7293), 971 states have call successors, (971), 23 states have call predecessors, (971), 27 states have return successors, (1088), 970 states have call predecessors, (1088), 970 states have call successors, (1088) [2024-11-23 22:42:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 9352 transitions. [2024-11-23 22:42:57,950 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 9352 transitions. Word has length 124 [2024-11-23 22:42:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:57,951 INFO L471 AbstractCegarLoop]: Abstraction has 5475 states and 9352 transitions. [2024-11-23 22:42:57,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 9352 transitions. [2024-11-23 22:42:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:42:57,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:57,983 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:57,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:42:57,984 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:57,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1915475502, now seen corresponding path program 1 times [2024-11-23 22:42:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:57,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171566572] [2024-11-23 22:42:57,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:57,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:58,099 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 22:42:58,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:58,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171566572] [2024-11-23 22:42:58,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171566572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:58,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:58,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:42:58,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465806361] [2024-11-23 22:42:58,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:58,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:58,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:58,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:58,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:58,101 INFO L87 Difference]: Start difference. First operand 5475 states and 9352 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:58,537 INFO L93 Difference]: Finished difference Result 13450 states and 23114 transitions. [2024-11-23 22:42:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:42:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-11-23 22:42:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:58,618 INFO L225 Difference]: With dead ends: 13450 [2024-11-23 22:42:58,618 INFO L226 Difference]: Without dead ends: 9072 [2024-11-23 22:42:58,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:58,641 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 95 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:58,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1068 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:42:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2024-11-23 22:42:59,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 9064. [2024-11-23 22:42:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9064 states, 7459 states have (on average 1.6282343477677972) internal successors, (12145), 7466 states have internal predecessors, (12145), 1577 states have call successors, (1577), 23 states have call predecessors, (1577), 27 states have return successors, (1772), 1576 states have call predecessors, (1772), 1576 states have call successors, (1772) [2024-11-23 22:42:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9064 states to 9064 states and 15494 transitions. [2024-11-23 22:42:59,254 INFO L78 Accepts]: Start accepts. Automaton has 9064 states and 15494 transitions. Word has length 125 [2024-11-23 22:42:59,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:59,257 INFO L471 AbstractCegarLoop]: Abstraction has 9064 states and 15494 transitions. [2024-11-23 22:42:59,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:42:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 9064 states and 15494 transitions. [2024-11-23 22:42:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 22:42:59,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:59,292 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:59,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:42:59,292 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:59,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1033728924, now seen corresponding path program 1 times [2024-11-23 22:42:59,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:59,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044062673] [2024-11-23 22:42:59,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:59,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:59,399 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 22:42:59,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:59,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044062673] [2024-11-23 22:42:59,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044062673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:59,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:59,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:42:59,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084390484] [2024-11-23 22:42:59,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:59,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:42:59,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:59,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:42:59,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:42:59,404 INFO L87 Difference]: Start difference. First operand 9064 states and 15494 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:43:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:00,019 INFO L93 Difference]: Finished difference Result 23396 states and 40141 transitions. [2024-11-23 22:43:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:43:00,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2024-11-23 22:43:00,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:00,119 INFO L225 Difference]: With dead ends: 23396 [2024-11-23 22:43:00,119 INFO L226 Difference]: Without dead ends: 15859 [2024-11-23 22:43:00,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:43:00,157 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 93 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:00,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1075 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:43:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15859 states. [2024-11-23 22:43:01,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15859 to 15851. [2024-11-23 22:43:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15851 states, 13043 states have (on average 1.6193360423215517) internal successors, (21121), 13050 states have internal predecessors, (21121), 2780 states have call successors, (2780), 23 states have call predecessors, (2780), 27 states have return successors, (3119), 2779 states have call predecessors, (3119), 2779 states have call successors, (3119) [2024-11-23 22:43:01,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15851 states to 15851 states and 27020 transitions. [2024-11-23 22:43:01,213 INFO L78 Accepts]: Start accepts. Automaton has 15851 states and 27020 transitions. Word has length 126 [2024-11-23 22:43:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:01,214 INFO L471 AbstractCegarLoop]: Abstraction has 15851 states and 27020 transitions. [2024-11-23 22:43:01,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:43:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 15851 states and 27020 transitions. [2024-11-23 22:43:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 22:43:01,255 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:01,255 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 22:43:01,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:43:01,255 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:01,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1964988083, now seen corresponding path program 1 times [2024-11-23 22:43:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:43:01,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953819140] [2024-11-23 22:43:01,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:43:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:01,325 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 22:43:01,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:43:01,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953819140] [2024-11-23 22:43:01,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953819140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:01,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:01,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:43:01,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280893365] [2024-11-23 22:43:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:01,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:43:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:43:01,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:43:01,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:43:01,327 INFO L87 Difference]: Start difference. First operand 15851 states and 27020 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:43:02,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:02,277 INFO L93 Difference]: Finished difference Result 41922 states and 71760 transitions. [2024-11-23 22:43:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:43:02,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-23 22:43:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:02,422 INFO L225 Difference]: With dead ends: 41922 [2024-11-23 22:43:02,423 INFO L226 Difference]: Without dead ends: 28211 [2024-11-23 22:43:02,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:43:02,467 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 91 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:02,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1058 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:43:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28211 states. [2024-11-23 22:43:04,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28211 to 28203. [2024-11-23 22:43:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28203 states, 23356 states have (on average 1.6150882000342524) internal successors, (37722), 23363 states have internal predecessors, (37722), 4819 states have call successors, (4819), 23 states have call predecessors, (4819), 27 states have return successors, (5432), 4818 states have call predecessors, (5432), 4818 states have call successors, (5432) [2024-11-23 22:43:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28203 states to 28203 states and 47973 transitions. [2024-11-23 22:43:04,267 INFO L78 Accepts]: Start accepts. Automaton has 28203 states and 47973 transitions. Word has length 127 [2024-11-23 22:43:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:04,268 INFO L471 AbstractCegarLoop]: Abstraction has 28203 states and 47973 transitions. [2024-11-23 22:43:04,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:43:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 28203 states and 47973 transitions. [2024-11-23 22:43:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 22:43:04,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:04,328 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 22:43:04,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:43:04,328 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:04,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:04,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1021619034, now seen corresponding path program 1 times [2024-11-23 22:43:04,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:43:04,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275258619] [2024-11-23 22:43:04,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:04,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:43:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:04,434 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 22:43:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:43:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275258619] [2024-11-23 22:43:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275258619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:04,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:43:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975105894] [2024-11-23 22:43:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:04,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:43:04,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:43:04,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:43:04,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:43:04,437 INFO L87 Difference]: Start difference. First operand 28203 states and 47973 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:43:06,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:06,164 INFO L93 Difference]: Finished difference Result 76849 states and 131152 transitions. [2024-11-23 22:43:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:43:06,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2024-11-23 22:43:06,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:06,483 INFO L225 Difference]: With dead ends: 76849 [2024-11-23 22:43:06,483 INFO L226 Difference]: Without dead ends: 51521 [2024-11-23 22:43:06,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:43:06,584 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 89 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:06,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1071 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:43:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51521 states. [2024-11-23 22:43:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51521 to 51513. [2024-11-23 22:43:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51513 states, 42951 states have (on average 1.6093222509371143) internal successors, (69122), 42958 states have internal predecessors, (69122), 8534 states have call successors, (8534), 23 states have call predecessors, (8534), 27 states have return successors, (9679), 8533 states have call predecessors, (9679), 8533 states have call successors, (9679) [2024-11-23 22:43:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51513 states to 51513 states and 87335 transitions. [2024-11-23 22:43:09,529 INFO L78 Accepts]: Start accepts. Automaton has 51513 states and 87335 transitions. Word has length 128 [2024-11-23 22:43:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:09,530 INFO L471 AbstractCegarLoop]: Abstraction has 51513 states and 87335 transitions. [2024-11-23 22:43:09,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:43:09,530 INFO L276 IsEmpty]: Start isEmpty. Operand 51513 states and 87335 transitions. [2024-11-23 22:43:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 22:43:09,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:09,606 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:09,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:43:09,606 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:09,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1966113651, now seen corresponding path program 1 times [2024-11-23 22:43:09,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:43:09,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343226368] [2024-11-23 22:43:09,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:09,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:43:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:09,717 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 22:43:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:43:09,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343226368] [2024-11-23 22:43:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343226368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:09,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:43:09,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773148483] [2024-11-23 22:43:09,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:09,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:43:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:43:09,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:43:09,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:43:09,721 INFO L87 Difference]: Start difference. First operand 51513 states and 87335 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:43:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:12,424 INFO L93 Difference]: Finished difference Result 96101 states and 163251 transitions. [2024-11-23 22:43:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:43:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-11-23 22:43:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:12,986 INFO L225 Difference]: With dead ends: 96101 [2024-11-23 22:43:12,986 INFO L226 Difference]: Without dead ends: 95892 [2024-11-23 22:43:13,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:43:13,046 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 84 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:13,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1072 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:43:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95892 states. [2024-11-23 22:43:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95892 to 95884. [2024-11-23 22:43:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95884 states, 80523 states have (on average 1.6020764253691493) internal successors, (129004), 80530 states have internal predecessors, (129004), 15333 states have call successors, (15333), 23 states have call predecessors, (15333), 27 states have return successors, (17524), 15332 states have call predecessors, (17524), 15332 states have call successors, (17524) [2024-11-23 22:43:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95884 states to 95884 states and 161861 transitions. [2024-11-23 22:43:18,059 INFO L78 Accepts]: Start accepts. Automaton has 95884 states and 161861 transitions. Word has length 129 [2024-11-23 22:43:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:18,059 INFO L471 AbstractCegarLoop]: Abstraction has 95884 states and 161861 transitions. [2024-11-23 22:43:18,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 22:43:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 95884 states and 161861 transitions. [2024-11-23 22:43:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-23 22:43:18,158 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:18,159 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:18,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:43:18,159 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:18,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 370949957, now seen corresponding path program 1 times [2024-11-23 22:43:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:43:18,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232636237] [2024-11-23 22:43:18,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:43:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:18,604 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 22:43:18,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:43:18,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232636237] [2024-11-23 22:43:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232636237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:18,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:18,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:43:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288520069] [2024-11-23 22:43:18,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:18,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:43:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:43:18,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:43:18,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:43:18,607 INFO L87 Difference]: Start difference. First operand 95884 states and 161861 transitions. Second operand has 14 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-23 22:43:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:25,689 INFO L93 Difference]: Finished difference Result 191394 states and 328494 transitions. [2024-11-23 22:43:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-23 22:43:25,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 130 [2024-11-23 22:43:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:27,061 INFO L225 Difference]: With dead ends: 191394 [2024-11-23 22:43:27,062 INFO L226 Difference]: Without dead ends: 191191 [2024-11-23 22:43:27,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2024-11-23 22:43:27,136 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 1675 mSDsluCounter, 6632 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 7255 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:27,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 7255 Invalid, 2038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [540 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 22:43:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191191 states. [2024-11-23 22:43:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191191 to 191023. [2024-11-23 22:43:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191023 states, 160484 states have (on average 1.6027828319334014) internal successors, (257221), 160388 states have internal predecessors, (257221), 30469 states have call successors, (30469), 62 states have call predecessors, (30469), 69 states have return successors, (38125), 30578 states have call predecessors, (38125), 30466 states have call successors, (38125) [2024-11-23 22:43:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191023 states to 191023 states and 325815 transitions. [2024-11-23 22:43:34,809 INFO L78 Accepts]: Start accepts. Automaton has 191023 states and 325815 transitions. Word has length 130 [2024-11-23 22:43:34,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:34,810 INFO L471 AbstractCegarLoop]: Abstraction has 191023 states and 325815 transitions. [2024-11-23 22:43:34,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-23 22:43:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 191023 states and 325815 transitions. [2024-11-23 22:43:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 22:43:34,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:34,913 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:34,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:43:34,913 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:34,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash 896088636, now seen corresponding path program 1 times [2024-11-23 22:43:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:43:34,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728289841] [2024-11-23 22:43:34,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:34,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:43:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:35,144 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 22:43:35,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:43:35,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728289841] [2024-11-23 22:43:35,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728289841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:35,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:35,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:43:35,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481969065] [2024-11-23 22:43:35,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:35,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:43:35,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:43:35,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:43:35,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:43:35,147 INFO L87 Difference]: Start difference. First operand 191023 states and 325815 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 8 states have internal predecessors, (90), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13)