./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product12.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_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/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_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/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_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/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 6a023004d1923934c700fbd43377f50b99f9b3dcadd2a9eb1f89b20b18aa1436 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:27:08,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:27:08,962 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:27:08,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:27:08,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:27:09,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:27:09,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:27:09,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:27:09,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:27:09,019 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:27:09,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:27:09,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:27:09,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:27:09,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:27:09,021 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:27:09,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:27:09,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:27:09,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:27:09,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:27:09,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:27:09,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:27:09,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:27:09,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:27:09,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:27:09,024 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:27:09,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:27:09,024 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:27:09,024 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:27:09,024 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:27:09,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:27:09,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:27:09,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:27:09,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:27:09,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:27:09,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:27:09,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:27:09,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:27:09,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:27:09,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:27:09,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:27:09,026 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:27:09,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:27:09,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:27:09,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:27:09,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:27:09,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:27:09,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:27:09,027 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:27:09,028 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_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/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 -> 6a023004d1923934c700fbd43377f50b99f9b3dcadd2a9eb1f89b20b18aa1436 [2024-11-23 23:27:09,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:27:09,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:27:09,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:27:09,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:27:09,347 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:27:09,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c [2024-11-23 23:27:12,536 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/data/f90744893/15dd1e85a025459295ee6ecbc37dcd02/FLAGb1e6aeec8 [2024-11-23 23:27:13,078 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:27:13,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c [2024-11-23 23:27:13,110 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/data/f90744893/15dd1e85a025459295ee6ecbc37dcd02/FLAGb1e6aeec8 [2024-11-23 23:27:13,610 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/data/f90744893/15dd1e85a025459295ee6ecbc37dcd02 [2024-11-23 23:27:13,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:27:13,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:27:13,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:27:13,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:27:13,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:27:13,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:27:13" (1/1) ... [2024-11-23 23:27:13,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6784a6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:13, skipping insertion in model container [2024-11-23 23:27:13,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:27:13" (1/1) ... [2024-11-23 23:27:13,679 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:27:14,333 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_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c[52000,52013] [2024-11-23 23:27:14,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:27:14,416 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:27:14,426 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-23 23:27:14,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [97] [2024-11-23 23:27:14,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [210] [2024-11-23 23:27:14,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [576] [2024-11-23 23:27:14,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [864] [2024-11-23 23:27:14,428 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1937] [2024-11-23 23:27:14,429 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2342] [2024-11-23 23:27:14,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2351] [2024-11-23 23:27:14,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptDecrypt_spec.i","") [2583] [2024-11-23 23:27:14,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2629] [2024-11-23 23:27:14,430 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2646] [2024-11-23 23:27:14,569 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_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c[52000,52013] [2024-11-23 23:27:14,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:27:14,625 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:27:14,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14 WrapperNode [2024-11-23 23:27:14,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:27:14,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:27:14,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:27:14,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:27:14,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,722 INFO L138 Inliner]: procedures = 123, calls = 179, calls flagged for inlining = 49, calls inlined = 39, statements flattened = 810 [2024-11-23 23:27:14,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:27:14,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:27:14,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:27:14,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:27:14,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,792 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 23:27:14,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,817 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:27:14,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:27:14,861 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:27:14,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:27:14,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (1/1) ... [2024-11-23 23:27:14,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:27:14,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:14,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:27:14,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:27:14,937 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-23 23:27:14,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-23 23:27:14,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-23 23:27:14,938 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-23 23:27:14,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-23 23:27:14,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-23 23:27:14,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-23 23:27:14,939 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-23 23:27:14,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-23 23:27:14,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-23 23:27:14,939 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-23 23:27:14,939 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-23 23:27:14,940 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-23 23:27:14,940 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-23 23:27:14,941 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-23 23:27:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-23 23:27:14,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-23 23:27:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-23 23:27:14,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:27:14,941 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-23 23:27:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-23 23:27:14,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-23 23:27:14,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-23 23:27:14,943 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-23 23:27:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-23 23:27:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-23 23:27:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-23 23:27:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-23 23:27:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-23 23:27:14,944 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-23 23:27:14,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:27:14,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:27:15,183 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:27:15,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:27:16,138 INFO L? ?]: Removed 334 outVars from TransFormulas that were not future-live. [2024-11-23 23:27:16,138 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:27:16,189 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:27:16,191 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:27:16,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:27:16 BoogieIcfgContainer [2024-11-23 23:27:16,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:27:16,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:27:16,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:27:16,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:27:16,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:27:13" (1/3) ... [2024-11-23 23:27:16,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2a9881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:27:16, skipping insertion in model container [2024-11-23 23:27:16,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:27:14" (2/3) ... [2024-11-23 23:27:16,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2a9881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:27:16, skipping insertion in model container [2024-11-23 23:27:16,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:27:16" (3/3) ... [2024-11-23 23:27:16,204 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec6_product12.cil.c [2024-11-23 23:27:16,223 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:27:16,225 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec6_product12.cil.c that has 18 procedures, 273 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:27:16,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:27:16,303 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;@35a95d94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:27:16,303 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:27:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 273 states, 211 states have (on average 1.5402843601895735) internal successors, (325), 215 states have internal predecessors, (325), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-23 23:27:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 23:27:16,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:16,327 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-23 23:27:16,327 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:16,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1181392571, now seen corresponding path program 1 times [2024-11-23 23:27:16,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:16,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138276037] [2024-11-23 23:27:16,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:27:17,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:17,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138276037] [2024-11-23 23:27:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138276037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:27:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467912735] [2024-11-23 23:27:17,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:17,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:17,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:17,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:27:17,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:27:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:17,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:27:17,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:27:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 23:27:17,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:27:17,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467912735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:17,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:27:17,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 23:27:17,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765062428] [2024-11-23 23:27:17,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:17,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:17,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:17,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:17,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:27:17,921 INFO L87 Difference]: Start difference. First operand has 273 states, 211 states have (on average 1.5402843601895735) internal successors, (325), 215 states have internal predecessors, (325), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:18,016 INFO L93 Difference]: Finished difference Result 400 states and 590 transitions. [2024-11-23 23:27:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:18,018 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2024-11-23 23:27:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:18,030 INFO L225 Difference]: With dead ends: 400 [2024-11-23 23:27:18,030 INFO L226 Difference]: Without dead ends: 268 [2024-11-23 23:27:18,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 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 23:27:18,037 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 1 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:18,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 807 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-23 23:27:18,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2024-11-23 23:27:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 206 states have (on average 1.529126213592233) internal successors, (315), 209 states have internal predecessors, (315), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-23 23:27:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 400 transitions. [2024-11-23 23:27:18,116 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 400 transitions. Word has length 111 [2024-11-23 23:27:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:18,118 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 400 transitions. [2024-11-23 23:27:18,118 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:18,119 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 400 transitions. [2024-11-23 23:27:18,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 23:27:18,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:18,131 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 23:27:18,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:27:18,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:27:18,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:18,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1929611433, now seen corresponding path program 1 times [2024-11-23 23:27:18,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543172927] [2024-11-23 23:27:18,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 23:27:18,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:18,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543172927] [2024-11-23 23:27:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543172927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:27:18,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088503912] [2024-11-23 23:27:18,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:18,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:18,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:27:18,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:27:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:19,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:27:19,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:27:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 23:27:19,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:27:19,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088503912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:19,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:27:19,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 23:27:19,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601008457] [2024-11-23 23:27:19,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:19,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:19,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:19,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:19,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:27:19,263 INFO L87 Difference]: Start difference. First operand 267 states and 400 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:19,328 INFO L93 Difference]: Finished difference Result 559 states and 851 transitions. [2024-11-23 23:27:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:19,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2024-11-23 23:27:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:19,342 INFO L225 Difference]: With dead ends: 559 [2024-11-23 23:27:19,342 INFO L226 Difference]: Without dead ends: 318 [2024-11-23 23:27:19,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 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 23:27:19,347 INFO L435 NwaCegarLoop]: 416 mSDtfsCounter, 99 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 770 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 23:27:19,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 770 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:19,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-23 23:27:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 310. [2024-11-23 23:27:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 238 states have (on average 1.546218487394958) internal successors, (368), 241 states have internal predecessors, (368), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-23 23:27:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 475 transitions. [2024-11-23 23:27:19,375 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 475 transitions. Word has length 116 [2024-11-23 23:27:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:19,375 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 475 transitions. [2024-11-23 23:27:19,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:19,375 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 475 transitions. [2024-11-23 23:27:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-23 23:27:19,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:19,379 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-23 23:27:19,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:27:19,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:19,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:19,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2021972012, now seen corresponding path program 1 times [2024-11-23 23:27:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:19,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549534201] [2024-11-23 23:27:19,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 23:27:19,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549534201] [2024-11-23 23:27:19,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549534201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:27:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086729163] [2024-11-23 23:27:19,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:19,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:19,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:19,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:27:19,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:27:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:20,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:27:20,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:27:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:27:20,318 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:27:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086729163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:20,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:27:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-23 23:27:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707852560] [2024-11-23 23:27:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:20,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:20,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:20,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:27:20,320 INFO L87 Difference]: Start difference. First operand 310 states and 475 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:20,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:20,407 INFO L93 Difference]: Finished difference Result 611 states and 940 transitions. [2024-11-23 23:27:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:20,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2024-11-23 23:27:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:20,413 INFO L225 Difference]: With dead ends: 611 [2024-11-23 23:27:20,413 INFO L226 Difference]: Without dead ends: 312 [2024-11-23 23:27:20,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 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 23:27:20,416 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 2 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1553 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 23:27:20,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1553 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-23 23:27:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-11-23 23:27:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 239 states have (on average 1.5439330543933054) internal successors, (369), 243 states have internal predecessors, (369), 54 states have call successors, (54), 17 states have call predecessors, (54), 18 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2024-11-23 23:27:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 478 transitions. [2024-11-23 23:27:20,458 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 478 transitions. Word has length 117 [2024-11-23 23:27:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:20,458 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 478 transitions. [2024-11-23 23:27:20,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 478 transitions. [2024-11-23 23:27:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 23:27:20,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:20,464 INFO L218 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2024-11-23 23:27:20,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:27:20,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:20,665 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:20,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2045218354, now seen corresponding path program 1 times [2024-11-23 23:27:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:20,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2277878] [2024-11-23 23:27:20,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:20,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:27:20,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2277878] [2024-11-23 23:27:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2277878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:27:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164389024] [2024-11-23 23:27:20,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:20,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:20,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:20,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:27:20,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:27:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:21,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:27:21,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:27:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:27:21,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:27:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164389024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:21,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:27:21,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-23 23:27:21,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317438121] [2024-11-23 23:27:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:21,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:21,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:21,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:21,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:27:21,393 INFO L87 Difference]: Start difference. First operand 312 states and 478 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:21,491 INFO L93 Difference]: Finished difference Result 613 states and 945 transitions. [2024-11-23 23:27:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:21,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2024-11-23 23:27:21,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:21,495 INFO L225 Difference]: With dead ends: 613 [2024-11-23 23:27:21,497 INFO L226 Difference]: Without dead ends: 314 [2024-11-23 23:27:21,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 116 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 23:27:21,500 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 2 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1539 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 23:27:21,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1539 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:21,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-23 23:27:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2024-11-23 23:27:21,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 240 states have (on average 1.5416666666666667) internal successors, (370), 245 states have internal predecessors, (370), 54 states have call successors, (54), 17 states have call predecessors, (54), 19 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2024-11-23 23:27:21,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 484 transitions. [2024-11-23 23:27:21,528 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 484 transitions. Word has length 118 [2024-11-23 23:27:21,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:21,529 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 484 transitions. [2024-11-23 23:27:21,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:21,529 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 484 transitions. [2024-11-23 23:27:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 23:27:21,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:21,534 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:21,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:27:21,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:21,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:21,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash -928069809, now seen corresponding path program 1 times [2024-11-23 23:27:21,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:21,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086468514] [2024-11-23 23:27:21,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 23:27:21,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:21,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086468514] [2024-11-23 23:27:21,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086468514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:21,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:21,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:21,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915141025] [2024-11-23 23:27:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:21,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:21,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:21,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:21,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:21,979 INFO L87 Difference]: Start difference. First operand 314 states and 484 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:22,044 INFO L93 Difference]: Finished difference Result 605 states and 936 transitions. [2024-11-23 23:27:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:22,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2024-11-23 23:27:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:22,048 INFO L225 Difference]: With dead ends: 605 [2024-11-23 23:27:22,048 INFO L226 Difference]: Without dead ends: 314 [2024-11-23 23:27:22,050 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 23:27:22,052 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 2 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1557 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 23:27:22,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1557 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-23 23:27:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2024-11-23 23:27:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 240 states have (on average 1.5416666666666667) internal successors, (370), 245 states have internal predecessors, (370), 54 states have call successors, (54), 17 states have call predecessors, (54), 19 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2024-11-23 23:27:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 483 transitions. [2024-11-23 23:27:22,077 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 483 transitions. Word has length 119 [2024-11-23 23:27:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:22,078 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 483 transitions. [2024-11-23 23:27:22,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 483 transitions. [2024-11-23 23:27:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 23:27:22,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:22,082 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:22,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:27:22,082 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:22,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1220928589, now seen corresponding path program 2 times [2024-11-23 23:27:22,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:22,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183757207] [2024-11-23 23:27:22,084 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:27:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:22,146 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:27:22,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:27:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 23:27:22,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183757207] [2024-11-23 23:27:22,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183757207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:22,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:22,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:22,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073556237] [2024-11-23 23:27:22,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:22,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:22,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:22,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:22,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:22,325 INFO L87 Difference]: Start difference. First operand 314 states and 483 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:22,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:22,391 INFO L93 Difference]: Finished difference Result 603 states and 931 transitions. [2024-11-23 23:27:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:22,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2024-11-23 23:27:22,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:22,395 INFO L225 Difference]: With dead ends: 603 [2024-11-23 23:27:22,395 INFO L226 Difference]: Without dead ends: 314 [2024-11-23 23:27:22,396 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 23:27:22,397 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 2 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1543 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 23:27:22,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1543 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-23 23:27:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2024-11-23 23:27:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 240 states have (on average 1.5416666666666667) internal successors, (370), 245 states have internal predecessors, (370), 54 states have call successors, (54), 17 states have call predecessors, (54), 19 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-23 23:27:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 482 transitions. [2024-11-23 23:27:22,414 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 482 transitions. Word has length 120 [2024-11-23 23:27:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:22,414 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 482 transitions. [2024-11-23 23:27:22,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 482 transitions. [2024-11-23 23:27:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-23 23:27:22,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:22,417 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:22,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:27:22,418 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:22,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash 590987118, now seen corresponding path program 3 times [2024-11-23 23:27:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:22,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061949993] [2024-11-23 23:27:22,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:27:22,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:22,458 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:27:22,458 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:27:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 23:27:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061949993] [2024-11-23 23:27:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061949993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:27:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935438118] [2024-11-23 23:27:22,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:22,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:27:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:22,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:27:22,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:27:22,679 INFO L87 Difference]: Start difference. First operand 314 states and 482 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:23,109 INFO L93 Difference]: Finished difference Result 709 states and 1028 transitions. [2024-11-23 23:27:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:27:23,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2024-11-23 23:27:23,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:23,115 INFO L225 Difference]: With dead ends: 709 [2024-11-23 23:27:23,115 INFO L226 Difference]: Without dead ends: 599 [2024-11-23 23:27:23,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:27:23,117 INFO L435 NwaCegarLoop]: 576 mSDtfsCounter, 556 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:23,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 2270 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:27:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-23 23:27:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 591. [2024-11-23 23:27:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 452 states have (on average 1.488938053097345) internal successors, (673), 464 states have internal predecessors, (673), 90 states have call successors, (90), 41 states have call predecessors, (90), 48 states have return successors, (104), 92 states have call predecessors, (104), 86 states have call successors, (104) [2024-11-23 23:27:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 867 transitions. [2024-11-23 23:27:23,161 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 867 transitions. Word has length 121 [2024-11-23 23:27:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:23,162 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 867 transitions. [2024-11-23 23:27:23,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 867 transitions. [2024-11-23 23:27:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 23:27:23,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:23,165 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:23,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:27:23,166 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:23,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash -600509634, now seen corresponding path program 1 times [2024-11-23 23:27:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:23,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962929955] [2024-11-23 23:27:23,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:23,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 23:27:23,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:23,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962929955] [2024-11-23 23:27:23,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962929955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:23,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:23,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:27:23,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008276659] [2024-11-23 23:27:23,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:23,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:27:23,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:23,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:27:23,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:27:23,389 INFO L87 Difference]: Start difference. First operand 591 states and 867 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:23,466 INFO L93 Difference]: Finished difference Result 1161 states and 1707 transitions. [2024-11-23 23:27:23,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:27:23,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2024-11-23 23:27:23,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:23,472 INFO L225 Difference]: With dead ends: 1161 [2024-11-23 23:27:23,472 INFO L226 Difference]: Without dead ends: 593 [2024-11-23 23:27:23,474 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 23:27:23,475 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 1 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1560 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 23:27:23,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1560 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-23 23:27:23,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2024-11-23 23:27:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 453 states have (on average 1.4878587196467992) internal successors, (674), 466 states have internal predecessors, (674), 90 states have call successors, (90), 41 states have call predecessors, (90), 49 states have return successors, (106), 92 states have call predecessors, (106), 86 states have call successors, (106) [2024-11-23 23:27:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 870 transitions. [2024-11-23 23:27:23,529 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 870 transitions. Word has length 122 [2024-11-23 23:27:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:23,530 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 870 transitions. [2024-11-23 23:27:23,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:27:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 870 transitions. [2024-11-23 23:27:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 23:27:23,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:23,536 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:23,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:27:23,536 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:23,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1396053345, now seen corresponding path program 1 times [2024-11-23 23:27:23,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:23,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485071786] [2024-11-23 23:27:23,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:23,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:27:23,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:23,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485071786] [2024-11-23 23:27:23,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485071786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:23,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:23,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:27:23,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426413953] [2024-11-23 23:27:23,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:23,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:27:23,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:23,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:27:23,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:27:23,767 INFO L87 Difference]: Start difference. First operand 593 states and 870 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-23 23:27:23,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:23,981 INFO L93 Difference]: Finished difference Result 1166 states and 1716 transitions. [2024-11-23 23:27:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:27:23,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2024-11-23 23:27:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:23,986 INFO L225 Difference]: With dead ends: 1166 [2024-11-23 23:27:23,986 INFO L226 Difference]: Without dead ends: 598 [2024-11-23 23:27:23,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:27:23,989 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 5 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:23,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2666 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:27:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-11-23 23:27:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2024-11-23 23:27:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 457 states have (on average 1.4857768052516411) internal successors, (679), 470 states have internal predecessors, (679), 90 states have call successors, (90), 42 states have call predecessors, (90), 50 states have return successors, (111), 92 states have call predecessors, (111), 86 states have call successors, (111) [2024-11-23 23:27:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 880 transitions. [2024-11-23 23:27:24,027 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 880 transitions. Word has length 123 [2024-11-23 23:27:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:24,028 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 880 transitions. [2024-11-23 23:27:24,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-23 23:27:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 880 transitions. [2024-11-23 23:27:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 23:27:24,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:24,031 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:24,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:27:24,031 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:24,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash -559577517, now seen corresponding path program 1 times [2024-11-23 23:27:24,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:24,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007064689] [2024-11-23 23:27:24,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:24,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:24,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:24,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007064689] [2024-11-23 23:27:24,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007064689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:27:24,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605753675] [2024-11-23 23:27:24,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:24,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:24,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:24,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:27:24,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:27:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:24,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:27:24,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:27:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:24,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:27:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605753675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:27:24,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:27:24,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-23 23:27:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112667009] [2024-11-23 23:27:24,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:27:24,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:27:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:24,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:27:24,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:27:24,724 INFO L87 Difference]: Start difference. First operand 598 states and 880 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 23:27:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:24,990 INFO L93 Difference]: Finished difference Result 1369 states and 2054 transitions. [2024-11-23 23:27:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:27:24,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 124 [2024-11-23 23:27:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:25,000 INFO L225 Difference]: With dead ends: 1369 [2024-11-23 23:27:25,000 INFO L226 Difference]: Without dead ends: 973 [2024-11-23 23:27:25,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 245 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 23:27:25,005 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 427 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:25,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1579 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:27:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-11-23 23:27:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 895. [2024-11-23 23:27:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 690 states have (on average 1.5521739130434782) internal successors, (1071), 703 states have internal predecessors, (1071), 154 states have call successors, (154), 42 states have call predecessors, (154), 50 states have return successors, (185), 156 states have call predecessors, (185), 150 states have call successors, (185) [2024-11-23 23:27:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1410 transitions. [2024-11-23 23:27:25,082 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1410 transitions. Word has length 124 [2024-11-23 23:27:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:25,082 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1410 transitions. [2024-11-23 23:27:25,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 23:27:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1410 transitions. [2024-11-23 23:27:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:27:25,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:25,088 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:25,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:27:25,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:27:25,289 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:25,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 929695035, now seen corresponding path program 1 times [2024-11-23 23:27:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520140401] [2024-11-23 23:27:25,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:25,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:25,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520140401] [2024-11-23 23:27:25,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520140401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:25,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:25,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:25,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832686342] [2024-11-23 23:27:25,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:25,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:25,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:25,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:25,393 INFO L87 Difference]: Start difference. First operand 895 states and 1410 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:25,490 INFO L93 Difference]: Finished difference Result 2040 states and 3264 transitions. [2024-11-23 23:27:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:25,490 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2024-11-23 23:27:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:25,501 INFO L225 Difference]: With dead ends: 2040 [2024-11-23 23:27:25,501 INFO L226 Difference]: Without dead ends: 1214 [2024-11-23 23:27:25,506 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 23:27:25,507 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 97 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 804 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 23:27:25,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 804 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2024-11-23 23:27:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1188. [2024-11-23 23:27:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 919 states have (on average 1.5767138193688792) internal successors, (1449), 932 states have internal predecessors, (1449), 218 states have call successors, (218), 42 states have call predecessors, (218), 50 states have return successors, (259), 220 states have call predecessors, (259), 214 states have call successors, (259) [2024-11-23 23:27:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1926 transitions. [2024-11-23 23:27:25,601 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1926 transitions. Word has length 131 [2024-11-23 23:27:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:25,602 INFO L471 AbstractCegarLoop]: Abstraction has 1188 states and 1926 transitions. [2024-11-23 23:27:25,602 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1926 transitions. [2024-11-23 23:27:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 23:27:25,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:25,610 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:25,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:27:25,611 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:25,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1804379259, now seen corresponding path program 1 times [2024-11-23 23:27:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539062614] [2024-11-23 23:27:25,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:25,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539062614] [2024-11-23 23:27:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539062614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:25,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:25,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148728030] [2024-11-23 23:27:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:25,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:25,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:25,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:25,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:25,713 INFO L87 Difference]: Start difference. First operand 1188 states and 1926 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:25,859 INFO L93 Difference]: Finished difference Result 2738 states and 4476 transitions. [2024-11-23 23:27:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:25,859 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2024-11-23 23:27:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:25,872 INFO L225 Difference]: With dead ends: 2738 [2024-11-23 23:27:25,873 INFO L226 Difference]: Without dead ends: 1670 [2024-11-23 23:27:25,878 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 23:27:25,879 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 95 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 792 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 23:27:25,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 792 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2024-11-23 23:27:26,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1644. [2024-11-23 23:27:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1280 states have (on average 1.596875) internal successors, (2044), 1293 states have internal predecessors, (2044), 313 states have call successors, (313), 42 states have call predecessors, (313), 50 states have return successors, (354), 315 states have call predecessors, (354), 309 states have call successors, (354) [2024-11-23 23:27:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2711 transitions. [2024-11-23 23:27:26,031 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2711 transitions. Word has length 132 [2024-11-23 23:27:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:26,031 INFO L471 AbstractCegarLoop]: Abstraction has 1644 states and 2711 transitions. [2024-11-23 23:27:26,032 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:26,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2711 transitions. [2024-11-23 23:27:26,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 23:27:26,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:26,045 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:26,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:27:26,045 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:26,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:26,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1583169767, now seen corresponding path program 1 times [2024-11-23 23:27:26,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:26,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929559170] [2024-11-23 23:27:26,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:26,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:26,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:26,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929559170] [2024-11-23 23:27:26,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929559170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:26,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:26,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:26,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322308476] [2024-11-23 23:27:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:26,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:26,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:26,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:26,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:26,145 INFO L87 Difference]: Start difference. First operand 1644 states and 2711 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:26,288 INFO L93 Difference]: Finished difference Result 3757 states and 6255 transitions. [2024-11-23 23:27:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:26,288 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2024-11-23 23:27:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:26,306 INFO L225 Difference]: With dead ends: 3757 [2024-11-23 23:27:26,306 INFO L226 Difference]: Without dead ends: 2354 [2024-11-23 23:27:26,313 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 23:27:26,314 INFO L435 NwaCegarLoop]: 398 mSDtfsCounter, 93 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 787 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 23:27:26,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 787 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2024-11-23 23:27:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2328. [2024-11-23 23:27:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2328 states, 1841 states have (on average 1.6137968495382944) internal successors, (2971), 1854 states have internal predecessors, (2971), 436 states have call successors, (436), 42 states have call predecessors, (436), 50 states have return successors, (493), 438 states have call predecessors, (493), 432 states have call successors, (493) [2024-11-23 23:27:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 3900 transitions. [2024-11-23 23:27:26,558 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 3900 transitions. Word has length 133 [2024-11-23 23:27:26,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:26,559 INFO L471 AbstractCegarLoop]: Abstraction has 2328 states and 3900 transitions. [2024-11-23 23:27:26,559 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 3900 transitions. [2024-11-23 23:27:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 23:27:26,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:26,582 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:26,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:27:26,583 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:26,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:26,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2135005318, now seen corresponding path program 1 times [2024-11-23 23:27:26,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:26,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811636477] [2024-11-23 23:27:26,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:26,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:26,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:26,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811636477] [2024-11-23 23:27:26,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811636477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:26,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:26,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:26,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342965311] [2024-11-23 23:27:26,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:26,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:26,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:26,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:26,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:26,734 INFO L87 Difference]: Start difference. First operand 2328 states and 3900 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:26,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:26,946 INFO L93 Difference]: Finished difference Result 5330 states and 9006 transitions. [2024-11-23 23:27:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:26,947 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2024-11-23 23:27:26,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:26,975 INFO L225 Difference]: With dead ends: 5330 [2024-11-23 23:27:26,975 INFO L226 Difference]: Without dead ends: 3440 [2024-11-23 23:27:26,985 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 23:27:26,985 INFO L435 NwaCegarLoop]: 398 mSDtfsCounter, 91 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 787 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 23:27:26,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 787 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:26,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2024-11-23 23:27:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 3414. [2024-11-23 23:27:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 2748 states have (on average 1.6262736535662299) internal successors, (4469), 2761 states have internal predecessors, (4469), 615 states have call successors, (615), 42 states have call predecessors, (615), 50 states have return successors, (698), 617 states have call predecessors, (698), 611 states have call successors, (698) [2024-11-23 23:27:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 5782 transitions. [2024-11-23 23:27:27,300 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 5782 transitions. Word has length 134 [2024-11-23 23:27:27,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:27,301 INFO L471 AbstractCegarLoop]: Abstraction has 3414 states and 5782 transitions. [2024-11-23 23:27:27,301 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 5782 transitions. [2024-11-23 23:27:27,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 23:27:27,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:27,320 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:27,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:27:27,320 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:27,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1006996579, now seen corresponding path program 1 times [2024-11-23 23:27:27,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:27,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791705615] [2024-11-23 23:27:27,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:27,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:27,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:27,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791705615] [2024-11-23 23:27:27,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791705615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:27,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:27,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746134455] [2024-11-23 23:27:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:27,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:27,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:27,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:27,443 INFO L87 Difference]: Start difference. First operand 3414 states and 5782 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:27,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:27,720 INFO L93 Difference]: Finished difference Result 8171 states and 13928 transitions. [2024-11-23 23:27:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:27,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2024-11-23 23:27:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:27,761 INFO L225 Difference]: With dead ends: 8171 [2024-11-23 23:27:27,761 INFO L226 Difference]: Without dead ends: 5416 [2024-11-23 23:27:27,777 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 23:27:27,778 INFO L435 NwaCegarLoop]: 410 mSDtfsCounter, 89 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 807 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 23:27:27,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 807 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2024-11-23 23:27:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 5390. [2024-11-23 23:27:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 4348 states have (on average 1.625114995400184) internal successors, (7066), 4361 states have internal predecessors, (7066), 991 states have call successors, (991), 42 states have call predecessors, (991), 50 states have return successors, (1118), 993 states have call predecessors, (1118), 987 states have call successors, (1118) [2024-11-23 23:27:28,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 9175 transitions. [2024-11-23 23:27:28,268 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 9175 transitions. Word has length 135 [2024-11-23 23:27:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:28,269 INFO L471 AbstractCegarLoop]: Abstraction has 5390 states and 9175 transitions. [2024-11-23 23:27:28,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:28,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 9175 transitions. [2024-11-23 23:27:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 23:27:28,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:28,299 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:28,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:27:28,299 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:28,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:28,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1611356426, now seen corresponding path program 1 times [2024-11-23 23:27:28,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:28,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654670948] [2024-11-23 23:27:28,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:28,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:28,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:28,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654670948] [2024-11-23 23:27:28,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654670948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:28,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:28,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:28,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595689731] [2024-11-23 23:27:28,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:28,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:28,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:28,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:28,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:28,386 INFO L87 Difference]: Start difference. First operand 5390 states and 9175 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:28,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:28,870 INFO L93 Difference]: Finished difference Result 13180 states and 22593 transitions. [2024-11-23 23:27:28,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:28,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2024-11-23 23:27:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:28,956 INFO L225 Difference]: With dead ends: 13180 [2024-11-23 23:27:28,956 INFO L226 Difference]: Without dead ends: 8810 [2024-11-23 23:27:28,975 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 23:27:28,976 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 87 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 792 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 23:27:28,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 792 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:28,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8810 states. [2024-11-23 23:27:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8810 to 8784. [2024-11-23 23:27:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8784 states, 7136 states have (on average 1.6264013452914798) internal successors, (11606), 7149 states have internal predecessors, (11606), 1597 states have call successors, (1597), 42 states have call predecessors, (1597), 50 states have return successors, (1802), 1599 states have call predecessors, (1802), 1593 states have call successors, (1802) [2024-11-23 23:27:29,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8784 states to 8784 states and 15005 transitions. [2024-11-23 23:27:29,791 INFO L78 Accepts]: Start accepts. Automaton has 8784 states and 15005 transitions. Word has length 136 [2024-11-23 23:27:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:29,791 INFO L471 AbstractCegarLoop]: Abstraction has 8784 states and 15005 transitions. [2024-11-23 23:27:29,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 8784 states and 15005 transitions. [2024-11-23 23:27:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-23 23:27:29,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:29,846 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:29,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:27:29,847 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:29,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1151684507, now seen corresponding path program 1 times [2024-11-23 23:27:29,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429285230] [2024-11-23 23:27:29,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:29,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:29,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:29,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429285230] [2024-11-23 23:27:29,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429285230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:29,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:29,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197833205] [2024-11-23 23:27:29,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:29,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:29,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:29,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:29,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:29,971 INFO L87 Difference]: Start difference. First operand 8784 states and 15005 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:30,755 INFO L93 Difference]: Finished difference Result 22601 states and 38780 transitions. [2024-11-23 23:27:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2024-11-23 23:27:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:30,856 INFO L225 Difference]: With dead ends: 22601 [2024-11-23 23:27:30,856 INFO L226 Difference]: Without dead ends: 15237 [2024-11-23 23:27:30,892 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 23:27:30,894 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 85 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 816 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 23:27:30,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 816 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:30,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15237 states. [2024-11-23 23:27:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15237 to 15211. [2024-11-23 23:27:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15211 states, 12360 states have (on average 1.618608414239482) internal successors, (20006), 12373 states have internal predecessors, (20006), 2800 states have call successors, (2800), 42 states have call predecessors, (2800), 50 states have return successors, (3149), 2802 states have call predecessors, (3149), 2796 states have call successors, (3149) [2024-11-23 23:27:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15211 states to 15211 states and 25955 transitions. [2024-11-23 23:27:31,966 INFO L78 Accepts]: Start accepts. Automaton has 15211 states and 25955 transitions. Word has length 137 [2024-11-23 23:27:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:31,966 INFO L471 AbstractCegarLoop]: Abstraction has 15211 states and 25955 transitions. [2024-11-23 23:27:31,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:31,967 INFO L276 IsEmpty]: Start isEmpty. Operand 15211 states and 25955 transitions. [2024-11-23 23:27:32,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-23 23:27:32,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:32,028 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:32,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:27:32,028 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:32,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1129816661, now seen corresponding path program 1 times [2024-11-23 23:27:32,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:32,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121514017] [2024-11-23 23:27:32,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:32,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121514017] [2024-11-23 23:27:32,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121514017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:32,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:32,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:32,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473924834] [2024-11-23 23:27:32,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:32,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:32,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:32,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:32,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:32,122 INFO L87 Difference]: Start difference. First operand 15211 states and 25955 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:33,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:33,350 INFO L93 Difference]: Finished difference Result 40117 states and 68783 transitions. [2024-11-23 23:27:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:33,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2024-11-23 23:27:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:33,512 INFO L225 Difference]: With dead ends: 40117 [2024-11-23 23:27:33,512 INFO L226 Difference]: Without dead ends: 26904 [2024-11-23 23:27:33,567 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 23:27:33,568 INFO L435 NwaCegarLoop]: 398 mSDtfsCounter, 83 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 790 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 23:27:33,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 790 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26904 states. [2024-11-23 23:27:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26904 to 26878. [2024-11-23 23:27:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26878 states, 21988 states have (on average 1.6150172821539022) internal successors, (35511), 22001 states have internal predecessors, (35511), 4839 states have call successors, (4839), 42 states have call predecessors, (4839), 50 states have return successors, (5462), 4841 states have call predecessors, (5462), 4835 states have call successors, (5462) [2024-11-23 23:27:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26878 states to 26878 states and 45812 transitions. [2024-11-23 23:27:35,553 INFO L78 Accepts]: Start accepts. Automaton has 26878 states and 45812 transitions. Word has length 138 [2024-11-23 23:27:35,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:35,554 INFO L471 AbstractCegarLoop]: Abstraction has 26878 states and 45812 transitions. [2024-11-23 23:27:35,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 26878 states and 45812 transitions. [2024-11-23 23:27:35,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 23:27:35,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:35,614 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:35,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:27:35,614 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:35,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:35,615 INFO L85 PathProgramCache]: Analyzing trace with hash 970372921, now seen corresponding path program 1 times [2024-11-23 23:27:35,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:35,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559495205] [2024-11-23 23:27:35,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:35,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:35,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559495205] [2024-11-23 23:27:35,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559495205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:35,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:35,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:35,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982289368] [2024-11-23 23:27:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:35,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:35,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:35,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:35,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:35,702 INFO L87 Difference]: Start difference. First operand 26878 states and 45812 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:37,542 INFO L93 Difference]: Finished difference Result 73069 states and 125015 transitions. [2024-11-23 23:27:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:37,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2024-11-23 23:27:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:37,786 INFO L225 Difference]: With dead ends: 73069 [2024-11-23 23:27:37,786 INFO L226 Difference]: Without dead ends: 48884 [2024-11-23 23:27:37,846 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 23:27:37,846 INFO L435 NwaCegarLoop]: 401 mSDtfsCounter, 81 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 793 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 23:27:37,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 793 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48884 states. [2024-11-23 23:27:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48884 to 48858. [2024-11-23 23:27:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48858 states, 40253 states have (on average 1.60939557300077) internal successors, (64783), 40266 states have internal predecessors, (64783), 8554 states have call successors, (8554), 42 states have call predecessors, (8554), 50 states have return successors, (9709), 8556 states have call predecessors, (9709), 8550 states have call successors, (9709) [2024-11-23 23:27:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48858 states to 48858 states and 83046 transitions. [2024-11-23 23:27:40,807 INFO L78 Accepts]: Start accepts. Automaton has 48858 states and 83046 transitions. Word has length 139 [2024-11-23 23:27:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:40,807 INFO L471 AbstractCegarLoop]: Abstraction has 48858 states and 83046 transitions. [2024-11-23 23:27:40,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 48858 states and 83046 transitions. [2024-11-23 23:27:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 23:27:40,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:40,886 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:40,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:27:40,887 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:40,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:40,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1246358411, now seen corresponding path program 1 times [2024-11-23 23:27:40,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:40,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124291939] [2024-11-23 23:27:40,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:40,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 23:27:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:41,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124291939] [2024-11-23 23:27:41,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124291939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:41,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:27:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:27:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97092066] [2024-11-23 23:27:41,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:41,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:27:41,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:41,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:27:41,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:27:41,004 INFO L87 Difference]: Start difference. First operand 48858 states and 83046 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:43,836 INFO L93 Difference]: Finished difference Result 91036 states and 155058 transitions. [2024-11-23 23:27:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:27:43,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2024-11-23 23:27:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:44,313 INFO L225 Difference]: With dead ends: 91036 [2024-11-23 23:27:44,313 INFO L226 Difference]: Without dead ends: 90640 [2024-11-23 23:27:44,365 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 23:27:44,369 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 76 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 804 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 23:27:44,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 804 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:27:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90640 states. [2024-11-23 23:27:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90640 to 90614. [2024-11-23 23:27:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90614 states, 75210 states have (on average 1.6019279351150113) internal successors, (120481), 75223 states have internal predecessors, (120481), 15353 states have call successors, (15353), 42 states have call predecessors, (15353), 50 states have return successors, (17554), 15355 states have call predecessors, (17554), 15349 states have call successors, (17554) [2024-11-23 23:27:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90614 states to 90614 states and 153388 transitions. [2024-11-23 23:27:48,594 INFO L78 Accepts]: Start accepts. Automaton has 90614 states and 153388 transitions. Word has length 140 [2024-11-23 23:27:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:27:48,594 INFO L471 AbstractCegarLoop]: Abstraction has 90614 states and 153388 transitions. [2024-11-23 23:27:48,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 23:27:48,595 INFO L276 IsEmpty]: Start isEmpty. Operand 90614 states and 153388 transitions. [2024-11-23 23:27:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 23:27:48,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:27:48,673 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:27:48,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:27:48,673 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:27:48,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:27:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash 852559962, now seen corresponding path program 1 times [2024-11-23 23:27:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:27:48,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979452365] [2024-11-23 23:27:48,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:48,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:27:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 23:27:49,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:27:49,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979452365] [2024-11-23 23:27:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979452365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:27:49,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968277800] [2024-11-23 23:27:49,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:27:49,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:27:49,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:27:49,033 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:27:49,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe1b044-df6e-4de5-8f58-1a5e2972c4fb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:27:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:27:49,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 23:27:49,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:27:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 23:27:50,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:27:50,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968277800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:27:50,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:27:50,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2024-11-23 23:27:50,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200538888] [2024-11-23 23:27:50,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:27:50,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:27:50,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:27:50,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:27:50,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:27:50,400 INFO L87 Difference]: Start difference. First operand 90614 states and 153388 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-23 23:27:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:27:55,619 INFO L93 Difference]: Finished difference Result 181194 states and 312029 transitions. [2024-11-23 23:27:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:27:55,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 141 [2024-11-23 23:27:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:27:56,386 INFO L225 Difference]: With dead ends: 181194 [2024-11-23 23:27:56,386 INFO L226 Difference]: Without dead ends: 180806 [2024-11-23 23:27:56,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:27:56,458 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 631 mSDsluCounter, 3304 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 3791 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:27:56,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 3791 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:27:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180806 states.