./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB --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 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:18:25,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:18:25,898 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:18:25,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:18:25,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:18:25,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:18:25,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:18:25,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:18:25,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:18:25,939 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:18:25,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:18:25,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:18:25,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:18:25,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:18:25,940 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:18:25,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:18:25,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:18:25,941 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:18:25,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:18:25,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:18:25,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:18:25,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:18:25,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:18:25,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:18:25,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:18:25,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:18:25,942 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:18:25,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:18:25,943 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:18:25,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:25,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:25,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:25,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:25,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:18:25,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:25,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:25,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:25,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:25,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:18:25,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:18:25,945 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:18:25,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:18:25,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:18:25,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:18:25,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:18:25,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:18:25,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:18:25,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:18:25,946 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_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 8d7d2bf487526d6e0729662c61851f9ddffc6ed66e923d4f96f5d4608e690fa4 [2024-11-27 23:18:26,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:18:26,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:18:26,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:18:26,315 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:18:26,316 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:18:26,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2024-11-27 23:18:29,560 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/data/885413fcf/5a74b02532a64030ac201b8fb4fa7aa2/FLAG3b5b49eba [2024-11-27 23:18:30,057 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:18:30,060 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c [2024-11-27 23:18:30,090 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/data/885413fcf/5a74b02532a64030ac201b8fb4fa7aa2/FLAG3b5b49eba [2024-11-27 23:18:30,119 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/data/885413fcf/5a74b02532a64030ac201b8fb4fa7aa2 [2024-11-27 23:18:30,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:18:30,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:18:30,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:30,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:18:30,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:18:30,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:30" (1/1) ... [2024-11-27 23:18:30,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e4c664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:30, skipping insertion in model container [2024-11-27 23:18:30,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:30" (1/1) ... [2024-11-27 23:18:30,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:18:30,896 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_db95f6bc-e696-483c-9134-233b6053611d/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2024-11-27 23:18:31,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:31,112 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:18:31,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-27 23:18:31,125 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [97] [2024-11-27 23:18:31,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1177] [2024-11-27 23:18:31,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1470] [2024-11-27 23:18:31,126 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1836] [2024-11-27 23:18:31,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1845] [2024-11-27 23:18:31,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2147] [2024-11-27 23:18:31,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [2550] [2024-11-27 23:18:31,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2608] [2024-11-27 23:18:31,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2824] [2024-11-27 23:18:31,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2921] [2024-11-27 23:18:31,275 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_db95f6bc-e696-483c-9134-233b6053611d/sv-benchmarks/c/product-lines/email_spec3_product18.cil.c[42127,42140] [2024-11-27 23:18:31,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:31,349 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:18:31,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31 WrapperNode [2024-11-27 23:18:31,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:31,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:18:31,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:18:31,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:18:31,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,431 INFO L138 Inliner]: procedures = 128, calls = 192, calls flagged for inlining = 57, calls inlined = 48, statements flattened = 881 [2024-11-27 23:18:31,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:18:31,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:18:31,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:18:31,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:18:31,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,486 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]. [2024-11-27 23:18:31,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,513 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:18:31,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:18:31,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:18:31,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:18:31,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:31,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:31,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:18:31,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:18:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-27 23:18:31,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-27 23:18:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-27 23:18:31,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-27 23:18:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-27 23:18:31,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-27 23:18:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-27 23:18:31,655 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-27 23:18:31,655 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-27 23:18:31,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-27 23:18:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-27 23:18:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-27 23:18:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-27 23:18:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-27 23:18:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-27 23:18:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-27 23:18:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:18:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-27 23:18:31,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-27 23:18:31,656 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-27 23:18:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-27 23:18:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-27 23:18:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-27 23:18:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-27 23:18:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-27 23:18:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-27 23:18:31,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-27 23:18:31,657 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-27 23:18:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-27 23:18:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-27 23:18:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-27 23:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-27 23:18:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-27 23:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-27 23:18:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-27 23:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-27 23:18:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-27 23:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:18:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-27 23:18:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-27 23:18:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:18:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:18:31,997 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:18:31,999 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:18:33,370 INFO L? ?]: Removed 393 outVars from TransFormulas that were not future-live. [2024-11-27 23:18:33,371 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:18:33,405 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:18:33,405 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:18:33,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:33 BoogieIcfgContainer [2024-11-27 23:18:33,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:18:33,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:18:33,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:18:33,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:18:33,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:18:30" (1/3) ... [2024-11-27 23:18:33,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fd3d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:18:33, skipping insertion in model container [2024-11-27 23:18:33,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (2/3) ... [2024-11-27 23:18:33,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fd3d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:18:33, skipping insertion in model container [2024-11-27 23:18:33,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:33" (3/3) ... [2024-11-27 23:18:33,423 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2024-11-27 23:18:33,444 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:18:33,449 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec3_product18.cil.c that has 20 procedures, 305 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:18:33,559 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:18:33,575 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;@5b8a7483, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:18:33,576 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:18:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 238 states have (on average 1.5336134453781514) internal successors, (365), 242 states have internal predecessors, (365), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-27 23:18:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 23:18:33,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:33,605 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:33,606 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:33,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash -169981492, now seen corresponding path program 1 times [2024-11-27 23:18:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:33,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911136986] [2024-11-27 23:18:33,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:33,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 23:18:34,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:34,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911136986] [2024-11-27 23:18:34,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911136986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:34,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127782783] [2024-11-27 23:18:34,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:34,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:34,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:34,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:34,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:18:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:35,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:18:35,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:18:35,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127782783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:35,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:35,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-27 23:18:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495128932] [2024-11-27 23:18:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:35,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:18:35,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:35,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:18:35,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:35,118 INFO L87 Difference]: Start difference. First operand has 305 states, 238 states have (on average 1.5336134453781514) internal successors, (365), 242 states have internal predecessors, (365), 46 states have call successors, (46), 19 states have call predecessors, (46), 19 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:35,174 INFO L93 Difference]: Finished difference Result 456 states and 669 transitions. [2024-11-27 23:18:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:18:35,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2024-11-27 23:18:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:35,188 INFO L225 Difference]: With dead ends: 456 [2024-11-27 23:18:35,189 INFO L226 Difference]: Without dead ends: 297 [2024-11-27 23:18:35,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:35,198 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:35,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-27 23:18:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-11-27 23:18:35,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 232 states have (on average 1.5258620689655173) internal successors, (354), 234 states have internal predecessors, (354), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-27 23:18:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 443 transitions. [2024-11-27 23:18:35,280 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 443 transitions. Word has length 103 [2024-11-27 23:18:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:35,282 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 443 transitions. [2024-11-27 23:18:35,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 443 transitions. [2024-11-27 23:18:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 23:18:35,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:35,289 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:35,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:18:35,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:18:35,490 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:35,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash 435490310, now seen corresponding path program 1 times [2024-11-27 23:18:35,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:35,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363195788] [2024-11-27 23:18:35,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:35,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 23:18:35,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:35,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363195788] [2024-11-27 23:18:35,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363195788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:35,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460898857] [2024-11-27 23:18:35,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:35,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:35,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:35,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:35,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:18:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:36,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:18:36,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:18:36,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:36,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460898857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:36,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:36,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 23:18:36,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923241844] [2024-11-27 23:18:36,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:36,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:36,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:36,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:36,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:18:36,408 INFO L87 Difference]: Start difference. First operand 297 states and 443 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:36,489 INFO L93 Difference]: Finished difference Result 444 states and 645 transitions. [2024-11-27 23:18:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:36,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2024-11-27 23:18:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:36,494 INFO L225 Difference]: With dead ends: 444 [2024-11-27 23:18:36,497 INFO L226 Difference]: Without dead ends: 299 [2024-11-27 23:18:36,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:18:36,500 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 1 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:36,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 880 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:36,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-27 23:18:36,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2024-11-27 23:18:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 233 states have (on average 1.5236051502145922) internal successors, (355), 235 states have internal predecessors, (355), 46 states have call successors, (46), 19 states have call predecessors, (46), 18 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-27 23:18:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 444 transitions. [2024-11-27 23:18:36,548 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 444 transitions. Word has length 103 [2024-11-27 23:18:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:36,549 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 444 transitions. [2024-11-27 23:18:36,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 444 transitions. [2024-11-27 23:18:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 23:18:36,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:36,556 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:36,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:36,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:36,757 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:36,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1629422675, now seen corresponding path program 1 times [2024-11-27 23:18:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198411614] [2024-11-27 23:18:36,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:18:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198411614] [2024-11-27 23:18:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198411614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722173904] [2024-11-27 23:18:37,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:37,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:37,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:37,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:37,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:18:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:37,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:18:37,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 23:18:37,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:37,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722173904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:37,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:37,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 23:18:37,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632846112] [2024-11-27 23:18:37,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:37,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:37,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:37,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:37,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:18:37,608 INFO L87 Difference]: Start difference. First operand 298 states and 444 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:37,655 INFO L93 Difference]: Finished difference Result 626 states and 947 transitions. [2024-11-27 23:18:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:37,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2024-11-27 23:18:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:37,659 INFO L225 Difference]: With dead ends: 626 [2024-11-27 23:18:37,659 INFO L226 Difference]: Without dead ends: 354 [2024-11-27 23:18:37,661 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 [2024-11-27 23:18:37,664 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 107 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 851 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 [2024-11-27 23:18:37,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 851 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-27 23:18:37,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 346. [2024-11-27 23:18:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 270 states have (on average 1.5407407407407407) internal successors, (416), 272 states have internal predecessors, (416), 57 states have call successors, (57), 19 states have call predecessors, (57), 18 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-27 23:18:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 527 transitions. [2024-11-27 23:18:37,703 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 527 transitions. Word has length 111 [2024-11-27 23:18:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:37,703 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 527 transitions. [2024-11-27 23:18:37,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 527 transitions. [2024-11-27 23:18:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 23:18:37,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:37,709 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:37,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:18:37,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-27 23:18:37,910 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:37,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1164588487, now seen corresponding path program 1 times [2024-11-27 23:18:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850663035] [2024-11-27 23:18:37,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:18:38,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:38,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850663035] [2024-11-27 23:18:38,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850663035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:38,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814402660] [2024-11-27 23:18:38,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:38,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:38,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:38,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:38,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:18:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:38,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:18:38,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:18:38,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:38,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814402660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:38,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-27 23:18:38,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259004751] [2024-11-27 23:18:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:38,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:38,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:38,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:38,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:18:38,602 INFO L87 Difference]: Start difference. First operand 346 states and 527 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:38,709 INFO L93 Difference]: Finished difference Result 683 states and 1044 transitions. [2024-11-27 23:18:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:38,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2024-11-27 23:18:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:38,715 INFO L225 Difference]: With dead ends: 683 [2024-11-27 23:18:38,715 INFO L226 Difference]: Without dead ends: 348 [2024-11-27 23:18:38,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:18:38,719 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 2 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1729 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 [2024-11-27 23:18:38,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1729 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-27 23:18:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2024-11-27 23:18:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 271 states have (on average 1.5387453874538746) internal successors, (417), 274 states have internal predecessors, (417), 57 states have call successors, (57), 19 states have call predecessors, (57), 19 states have return successors, (56), 54 states have call predecessors, (56), 54 states have call successors, (56) [2024-11-27 23:18:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 530 transitions. [2024-11-27 23:18:38,748 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 530 transitions. Word has length 112 [2024-11-27 23:18:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:38,748 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 530 transitions. [2024-11-27 23:18:38,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:38,748 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 530 transitions. [2024-11-27 23:18:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 23:18:38,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:38,754 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:38,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:38,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:38,955 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:38,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash 994748014, now seen corresponding path program 1 times [2024-11-27 23:18:38,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:38,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104131995] [2024-11-27 23:18:38,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:38,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:18:39,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104131995] [2024-11-27 23:18:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104131995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965907132] [2024-11-27 23:18:39,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:39,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:39,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:39,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:39,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:18:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:39,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:18:39,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:18:39,666 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:39,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965907132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:39,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:39,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-27 23:18:39,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001905945] [2024-11-27 23:18:39,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:39,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:39,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:39,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:39,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:18:39,672 INFO L87 Difference]: Start difference. First operand 348 states and 530 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:39,783 INFO L93 Difference]: Finished difference Result 685 states and 1049 transitions. [2024-11-27 23:18:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:39,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2024-11-27 23:18:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:39,787 INFO L225 Difference]: With dead ends: 685 [2024-11-27 23:18:39,788 INFO L226 Difference]: Without dead ends: 350 [2024-11-27 23:18:39,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:18:39,793 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 2 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1715 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 [2024-11-27 23:18:39,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1715 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-27 23:18:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2024-11-27 23:18:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 272 states have (on average 1.536764705882353) internal successors, (418), 276 states have internal predecessors, (418), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2024-11-27 23:18:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 536 transitions. [2024-11-27 23:18:39,822 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 536 transitions. Word has length 113 [2024-11-27 23:18:39,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:39,823 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 536 transitions. [2024-11-27 23:18:39,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 536 transitions. [2024-11-27 23:18:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 23:18:39,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:39,826 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:39,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:40,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:40,027 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:40,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash -409012205, now seen corresponding path program 1 times [2024-11-27 23:18:40,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:40,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181037777] [2024-11-27 23:18:40,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:40,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:18:40,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:40,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181037777] [2024-11-27 23:18:40,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181037777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:40,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:40,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:18:40,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094991800] [2024-11-27 23:18:40,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:40,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:40,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:40,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:40,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:40,256 INFO L87 Difference]: Start difference. First operand 350 states and 536 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:40,334 INFO L93 Difference]: Finished difference Result 677 states and 1040 transitions. [2024-11-27 23:18:40,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:40,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2024-11-27 23:18:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:40,339 INFO L225 Difference]: With dead ends: 677 [2024-11-27 23:18:40,339 INFO L226 Difference]: Without dead ends: 350 [2024-11-27 23:18:40,340 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 [2024-11-27 23:18:40,342 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 2 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1733 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 [2024-11-27 23:18:40,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1733 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-27 23:18:40,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2024-11-27 23:18:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 272 states have (on average 1.536764705882353) internal successors, (418), 276 states have internal predecessors, (418), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2024-11-27 23:18:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 535 transitions. [2024-11-27 23:18:40,376 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 535 transitions. Word has length 114 [2024-11-27 23:18:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:40,376 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 535 transitions. [2024-11-27 23:18:40,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 535 transitions. [2024-11-27 23:18:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 23:18:40,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:40,379 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:40,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:18:40,379 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:40,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash -860862230, now seen corresponding path program 2 times [2024-11-27 23:18:40,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:40,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871484999] [2024-11-27 23:18:40,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:18:40,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:40,420 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:18:40,420 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:18:40,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871484999] [2024-11-27 23:18:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871484999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:40,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:40,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:18:40,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116892354] [2024-11-27 23:18:40,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:40,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:40,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:40,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:40,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:40,563 INFO L87 Difference]: Start difference. First operand 350 states and 535 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:40,636 INFO L93 Difference]: Finished difference Result 675 states and 1035 transitions. [2024-11-27 23:18:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:40,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2024-11-27 23:18:40,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:40,641 INFO L225 Difference]: With dead ends: 675 [2024-11-27 23:18:40,642 INFO L226 Difference]: Without dead ends: 350 [2024-11-27 23:18:40,643 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 [2024-11-27 23:18:40,644 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 2 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1719 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 [2024-11-27 23:18:40,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1719 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:40,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-27 23:18:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2024-11-27 23:18:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 272 states have (on average 1.536764705882353) internal successors, (418), 276 states have internal predecessors, (418), 57 states have call successors, (57), 19 states have call predecessors, (57), 20 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2024-11-27 23:18:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 534 transitions. [2024-11-27 23:18:40,681 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 534 transitions. Word has length 115 [2024-11-27 23:18:40,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:40,682 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 534 transitions. [2024-11-27 23:18:40,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:40,682 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 534 transitions. [2024-11-27 23:18:40,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-27 23:18:40,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:40,685 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:40,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:18:40,685 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:40,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash -729236751, now seen corresponding path program 3 times [2024-11-27 23:18:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:40,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857072061] [2024-11-27 23:18:40,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:18:40,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:40,728 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:18:40,729 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 23:18:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857072061] [2024-11-27 23:18:40,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857072061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:40,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:40,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:18:40,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415242103] [2024-11-27 23:18:40,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:40,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:18:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:40,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:18:40,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:18:40,988 INFO L87 Difference]: Start difference. First operand 350 states and 534 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:41,403 INFO L93 Difference]: Finished difference Result 780 states and 1127 transitions. [2024-11-27 23:18:41,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:18:41,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2024-11-27 23:18:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:41,408 INFO L225 Difference]: With dead ends: 780 [2024-11-27 23:18:41,408 INFO L226 Difference]: Without dead ends: 642 [2024-11-27 23:18:41,410 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 [2024-11-27 23:18:41,410 INFO L435 NwaCegarLoop]: 658 mSDtfsCounter, 624 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:41,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 2664 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:18:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-27 23:18:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 632. [2024-11-27 23:18:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 498 states have (on average 1.4939759036144578) internal successors, (744), 505 states have internal predecessors, (744), 87 states have call successors, (87), 41 states have call predecessors, (87), 46 states have return successors, (94), 85 states have call predecessors, (94), 82 states have call successors, (94) [2024-11-27 23:18:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 925 transitions. [2024-11-27 23:18:41,453 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 925 transitions. Word has length 116 [2024-11-27 23:18:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:41,454 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 925 transitions. [2024-11-27 23:18:41,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 925 transitions. [2024-11-27 23:18:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-27 23:18:41,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:41,457 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:41,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:18:41,458 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:41,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1970984275, now seen corresponding path program 1 times [2024-11-27 23:18:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366175673] [2024-11-27 23:18:41,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:18:41,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:41,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366175673] [2024-11-27 23:18:41,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366175673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:41,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:41,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:18:41,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561634063] [2024-11-27 23:18:41,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:41,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:41,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:41,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:41,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:41,646 INFO L87 Difference]: Start difference. First operand 632 states and 925 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:41,722 INFO L93 Difference]: Finished difference Result 1243 states and 1823 transitions. [2024-11-27 23:18:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:41,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2024-11-27 23:18:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:41,730 INFO L225 Difference]: With dead ends: 1243 [2024-11-27 23:18:41,730 INFO L226 Difference]: Without dead ends: 634 [2024-11-27 23:18:41,733 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 [2024-11-27 23:18:41,734 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 1 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1736 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 [2024-11-27 23:18:41,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1736 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-27 23:18:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2024-11-27 23:18:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 499 states have (on average 1.4929859719438878) internal successors, (745), 507 states have internal predecessors, (745), 87 states have call successors, (87), 41 states have call predecessors, (87), 47 states have return successors, (96), 85 states have call predecessors, (96), 82 states have call successors, (96) [2024-11-27 23:18:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 928 transitions. [2024-11-27 23:18:41,772 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 928 transitions. Word has length 117 [2024-11-27 23:18:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:41,772 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 928 transitions. [2024-11-27 23:18:41,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:18:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 928 transitions. [2024-11-27 23:18:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 23:18:41,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:41,776 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:41,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:18:41,776 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:41,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1309321489, now seen corresponding path program 1 times [2024-11-27 23:18:41,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:41,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210710381] [2024-11-27 23:18:41,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:18:42,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:42,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210710381] [2024-11-27 23:18:42,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210710381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:42,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:42,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:18:42,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762627229] [2024-11-27 23:18:42,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:42,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:18:42,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:42,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:18:42,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:18:42,028 INFO L87 Difference]: Start difference. First operand 634 states and 928 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:18:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:42,230 INFO L93 Difference]: Finished difference Result 1248 states and 1832 transitions. [2024-11-27 23:18:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:18:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2024-11-27 23:18:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:42,236 INFO L225 Difference]: With dead ends: 1248 [2024-11-27 23:18:42,236 INFO L226 Difference]: Without dead ends: 639 [2024-11-27 23:18:42,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:18:42,241 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 5 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2974 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 [2024-11-27 23:18:42,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2974 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2024-11-27 23:18:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2024-11-27 23:18:42,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 503 states have (on average 1.4910536779324055) internal successors, (750), 511 states have internal predecessors, (750), 87 states have call successors, (87), 42 states have call predecessors, (87), 48 states have return successors, (101), 85 states have call predecessors, (101), 82 states have call successors, (101) [2024-11-27 23:18:42,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 938 transitions. [2024-11-27 23:18:42,281 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 938 transitions. Word has length 118 [2024-11-27 23:18:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:42,282 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 938 transitions. [2024-11-27 23:18:42,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-27 23:18:42,282 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 938 transitions. [2024-11-27 23:18:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 23:18:42,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:42,285 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:42,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:18:42,286 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:42,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:42,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1382393131, now seen corresponding path program 1 times [2024-11-27 23:18:42,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:42,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934239978] [2024-11-27 23:18:42,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:42,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:18:42,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:42,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934239978] [2024-11-27 23:18:42,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934239978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:42,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741759974] [2024-11-27 23:18:42,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:42,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:42,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:42,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:42,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:18:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:42,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:18:42,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:42,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741759974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:43,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:43,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2024-11-27 23:18:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838372813] [2024-11-27 23:18:43,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:43,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:18:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:43,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:18:43,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:18:43,047 INFO L87 Difference]: Start difference. First operand 639 states and 938 transitions. Second operand has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-27 23:18:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:43,889 INFO L93 Difference]: Finished difference Result 1631 states and 2479 transitions. [2024-11-27 23:18:43,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:18:43,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 119 [2024-11-27 23:18:43,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:43,898 INFO L225 Difference]: With dead ends: 1631 [2024-11-27 23:18:43,898 INFO L226 Difference]: Without dead ends: 1023 [2024-11-27 23:18:43,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:18:43,903 INFO L435 NwaCegarLoop]: 431 mSDtfsCounter, 1118 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:43,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 3074 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:18:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-11-27 23:18:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 963. [2024-11-27 23:18:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 763 states have (on average 1.54259501965924) internal successors, (1177), 770 states have internal predecessors, (1177), 151 states have call successors, (151), 43 states have call predecessors, (151), 48 states have return successors, (175), 149 states have call predecessors, (175), 146 states have call successors, (175) [2024-11-27 23:18:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1503 transitions. [2024-11-27 23:18:43,985 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1503 transitions. Word has length 119 [2024-11-27 23:18:43,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:43,986 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1503 transitions. [2024-11-27 23:18:43,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-27 23:18:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1503 transitions. [2024-11-27 23:18:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-27 23:18:43,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:43,992 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:44,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:44,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:44,193 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:44,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2005015772, now seen corresponding path program 1 times [2024-11-27 23:18:44,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:44,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165005918] [2024-11-27 23:18:44,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:44,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:44,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165005918] [2024-11-27 23:18:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165005918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:44,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:44,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:44,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089005057] [2024-11-27 23:18:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:44,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:44,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:44,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:44,275 INFO L87 Difference]: Start difference. First operand 963 states and 1503 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:44,360 INFO L93 Difference]: Finished difference Result 2158 states and 3427 transitions. [2024-11-27 23:18:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:44,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2024-11-27 23:18:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:44,370 INFO L225 Difference]: With dead ends: 2158 [2024-11-27 23:18:44,370 INFO L226 Difference]: Without dead ends: 1276 [2024-11-27 23:18:44,374 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 [2024-11-27 23:18:44,375 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 104 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 886 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 [2024-11-27 23:18:44,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 886 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2024-11-27 23:18:44,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1256. [2024-11-27 23:18:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 992 states have (on average 1.5675403225806452) internal successors, (1555), 999 states have internal predecessors, (1555), 215 states have call successors, (215), 43 states have call predecessors, (215), 48 states have return successors, (249), 213 states have call predecessors, (249), 210 states have call successors, (249) [2024-11-27 23:18:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2019 transitions. [2024-11-27 23:18:44,471 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2019 transitions. Word has length 123 [2024-11-27 23:18:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:44,471 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 2019 transitions. [2024-11-27 23:18:44,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2019 transitions. [2024-11-27 23:18:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 23:18:44,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:44,479 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:44,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:18:44,479 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:44,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:44,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1222723777, now seen corresponding path program 1 times [2024-11-27 23:18:44,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:44,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91751252] [2024-11-27 23:18:44,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:44,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:44,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91751252] [2024-11-27 23:18:44,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91751252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:44,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:44,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688694517] [2024-11-27 23:18:44,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:44,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:44,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:44,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:44,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:44,557 INFO L87 Difference]: Start difference. First operand 1256 states and 2019 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:44,711 INFO L93 Difference]: Finished difference Result 2881 states and 4674 transitions. [2024-11-27 23:18:44,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:44,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-11-27 23:18:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:44,728 INFO L225 Difference]: With dead ends: 2881 [2024-11-27 23:18:44,728 INFO L226 Difference]: Without dead ends: 1757 [2024-11-27 23:18:44,734 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 [2024-11-27 23:18:44,735 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 102 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 878 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 [2024-11-27 23:18:44,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 878 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:44,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2024-11-27 23:18:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1737. [2024-11-27 23:18:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1378 states have (on average 1.5856313497822931) internal successors, (2185), 1385 states have internal predecessors, (2185), 310 states have call successors, (310), 43 states have call predecessors, (310), 48 states have return successors, (344), 308 states have call predecessors, (344), 305 states have call successors, (344) [2024-11-27 23:18:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2839 transitions. [2024-11-27 23:18:44,923 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2839 transitions. Word has length 124 [2024-11-27 23:18:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:44,923 INFO L471 AbstractCegarLoop]: Abstraction has 1737 states and 2839 transitions. [2024-11-27 23:18:44,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:44,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2839 transitions. [2024-11-27 23:18:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-27 23:18:44,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:44,938 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:44,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:18:44,939 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:44,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash -32835026, now seen corresponding path program 1 times [2024-11-27 23:18:44,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:44,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141176981] [2024-11-27 23:18:44,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:44,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:45,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141176981] [2024-11-27 23:18:45,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141176981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:45,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:45,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:45,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644633442] [2024-11-27 23:18:45,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:45,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:45,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:45,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:45,041 INFO L87 Difference]: Start difference. First operand 1737 states and 2839 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:45,190 INFO L93 Difference]: Finished difference Result 3955 states and 6530 transitions. [2024-11-27 23:18:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:45,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-11-27 23:18:45,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:45,209 INFO L225 Difference]: With dead ends: 3955 [2024-11-27 23:18:45,209 INFO L226 Difference]: Without dead ends: 2481 [2024-11-27 23:18:45,216 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 [2024-11-27 23:18:45,217 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 100 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 873 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 [2024-11-27 23:18:45,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 873 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2024-11-27 23:18:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2461. [2024-11-27 23:18:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1979 states have (on average 1.6008084891359273) internal successors, (3168), 1986 states have internal predecessors, (3168), 433 states have call successors, (433), 43 states have call predecessors, (433), 48 states have return successors, (483), 431 states have call predecessors, (483), 428 states have call successors, (483) [2024-11-27 23:18:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 4084 transitions. [2024-11-27 23:18:45,413 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 4084 transitions. Word has length 125 [2024-11-27 23:18:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:45,414 INFO L471 AbstractCegarLoop]: Abstraction has 2461 states and 4084 transitions. [2024-11-27 23:18:45,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 4084 transitions. [2024-11-27 23:18:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:18:45,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:45,430 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:45,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:18:45,430 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:45,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash -902024354, now seen corresponding path program 1 times [2024-11-27 23:18:45,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:45,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457741385] [2024-11-27 23:18:45,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:45,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:45,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:45,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457741385] [2024-11-27 23:18:45,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457741385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:45,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:45,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:45,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060347749] [2024-11-27 23:18:45,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:45,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:45,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:45,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:45,511 INFO L87 Difference]: Start difference. First operand 2461 states and 4084 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:45,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:45,739 INFO L93 Difference]: Finished difference Result 5618 states and 9407 transitions. [2024-11-27 23:18:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:45,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2024-11-27 23:18:45,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:45,767 INFO L225 Difference]: With dead ends: 5618 [2024-11-27 23:18:45,767 INFO L226 Difference]: Without dead ends: 3632 [2024-11-27 23:18:45,776 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 [2024-11-27 23:18:45,777 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 98 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 873 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 [2024-11-27 23:18:45,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 873 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2024-11-27 23:18:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3612. [2024-11-27 23:18:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 2951 states have (on average 1.6119959335818366) internal successors, (4757), 2958 states have internal predecessors, (4757), 612 states have call successors, (612), 43 states have call predecessors, (612), 48 states have return successors, (688), 610 states have call predecessors, (688), 607 states have call successors, (688) [2024-11-27 23:18:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 6057 transitions. [2024-11-27 23:18:46,078 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 6057 transitions. Word has length 126 [2024-11-27 23:18:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:46,079 INFO L471 AbstractCegarLoop]: Abstraction has 3612 states and 6057 transitions. [2024-11-27 23:18:46,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 6057 transitions. [2024-11-27 23:18:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-27 23:18:46,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:46,099 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:46,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:18:46,099 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:46,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1785031826, now seen corresponding path program 1 times [2024-11-27 23:18:46,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:46,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186632309] [2024-11-27 23:18:46,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:46,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:46,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:46,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186632309] [2024-11-27 23:18:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186632309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:46,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:46,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344261757] [2024-11-27 23:18:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:46,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:46,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:46,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:46,178 INFO L87 Difference]: Start difference. First operand 3612 states and 6057 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:46,510 INFO L93 Difference]: Finished difference Result 8614 states and 14546 transitions. [2024-11-27 23:18:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:46,511 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-27 23:18:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:46,548 INFO L225 Difference]: With dead ends: 8614 [2024-11-27 23:18:46,548 INFO L226 Difference]: Without dead ends: 5718 [2024-11-27 23:18:46,560 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 [2024-11-27 23:18:46,561 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 96 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 892 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 [2024-11-27 23:18:46,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 892 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2024-11-27 23:18:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5698. [2024-11-27 23:18:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 4661 states have (on average 1.6108131302295645) internal successors, (7508), 4668 states have internal predecessors, (7508), 988 states have call successors, (988), 43 states have call predecessors, (988), 48 states have return successors, (1108), 986 states have call predecessors, (1108), 983 states have call successors, (1108) [2024-11-27 23:18:47,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 9604 transitions. [2024-11-27 23:18:47,017 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 9604 transitions. Word has length 127 [2024-11-27 23:18:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:47,017 INFO L471 AbstractCegarLoop]: Abstraction has 5698 states and 9604 transitions. [2024-11-27 23:18:47,021 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 9604 transitions. [2024-11-27 23:18:47,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 23:18:47,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:47,053 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:47,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:18:47,054 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:47,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash 555938042, now seen corresponding path program 1 times [2024-11-27 23:18:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:47,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677319528] [2024-11-27 23:18:47,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:47,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:47,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677319528] [2024-11-27 23:18:47,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677319528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:47,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:47,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69009576] [2024-11-27 23:18:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:47,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:47,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:47,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:47,139 INFO L87 Difference]: Start difference. First operand 5698 states and 9604 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:47,559 INFO L93 Difference]: Finished difference Result 13903 states and 23603 transitions. [2024-11-27 23:18:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:47,560 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2024-11-27 23:18:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:47,629 INFO L225 Difference]: With dead ends: 13903 [2024-11-27 23:18:47,629 INFO L226 Difference]: Without dead ends: 9307 [2024-11-27 23:18:47,650 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 [2024-11-27 23:18:47,651 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 94 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 876 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 [2024-11-27 23:18:47,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 876 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2024-11-27 23:18:48,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 9287. [2024-11-27 23:18:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9287 states, 7644 states have (on average 1.6118524332810047) internal successors, (12321), 7651 states have internal predecessors, (12321), 1594 states have call successors, (1594), 43 states have call predecessors, (1594), 48 states have return successors, (1792), 1592 states have call predecessors, (1792), 1589 states have call successors, (1792) [2024-11-27 23:18:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9287 states to 9287 states and 15707 transitions. [2024-11-27 23:18:48,353 INFO L78 Accepts]: Start accepts. Automaton has 9287 states and 15707 transitions. Word has length 128 [2024-11-27 23:18:48,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:48,353 INFO L471 AbstractCegarLoop]: Abstraction has 9287 states and 15707 transitions. [2024-11-27 23:18:48,354 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9287 states and 15707 transitions. [2024-11-27 23:18:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-27 23:18:48,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:48,465 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:48,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:18:48,465 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:48,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash 506472560, now seen corresponding path program 1 times [2024-11-27 23:18:48,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:48,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13429751] [2024-11-27 23:18:48,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:48,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:48,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13429751] [2024-11-27 23:18:48,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13429751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:48,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:48,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:48,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91578101] [2024-11-27 23:18:48,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:48,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:48,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:48,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:48,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:48,549 INFO L87 Difference]: Start difference. First operand 9287 states and 15707 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:49,207 INFO L93 Difference]: Finished difference Result 23849 states and 40525 transitions. [2024-11-27 23:18:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:49,207 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-11-27 23:18:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:49,282 INFO L225 Difference]: With dead ends: 23849 [2024-11-27 23:18:49,282 INFO L226 Difference]: Without dead ends: 16094 [2024-11-27 23:18:49,312 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 [2024-11-27 23:18:49,313 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 92 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 891 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 [2024-11-27 23:18:49,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 891 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16094 states. [2024-11-27 23:18:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16094 to 16074. [2024-11-27 23:18:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16074 states, 13228 states have (on average 1.604550952524947) internal successors, (21225), 13235 states have internal predecessors, (21225), 2797 states have call successors, (2797), 43 states have call predecessors, (2797), 48 states have return successors, (3139), 2795 states have call predecessors, (3139), 2792 states have call successors, (3139) [2024-11-27 23:18:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16074 states to 16074 states and 27161 transitions. [2024-11-27 23:18:50,224 INFO L78 Accepts]: Start accepts. Automaton has 16074 states and 27161 transitions. Word has length 129 [2024-11-27 23:18:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:50,225 INFO L471 AbstractCegarLoop]: Abstraction has 16074 states and 27161 transitions. [2024-11-27 23:18:50,225 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 16074 states and 27161 transitions. [2024-11-27 23:18:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 23:18:50,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:50,268 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:50,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:18:50,268 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:50,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash -135400071, now seen corresponding path program 1 times [2024-11-27 23:18:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:50,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237343925] [2024-11-27 23:18:50,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:50,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237343925] [2024-11-27 23:18:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237343925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:50,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117405322] [2024-11-27 23:18:50,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:50,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:50,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:50,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:50,345 INFO L87 Difference]: Start difference. First operand 16074 states and 27161 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:51,854 INFO L93 Difference]: Finished difference Result 42375 states and 71942 transitions. [2024-11-27 23:18:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:51,855 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2024-11-27 23:18:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:52,008 INFO L225 Difference]: With dead ends: 42375 [2024-11-27 23:18:52,009 INFO L226 Difference]: Without dead ends: 28446 [2024-11-27 23:18:52,066 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 [2024-11-27 23:18:52,067 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 90 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 876 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 [2024-11-27 23:18:52,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 876 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:52,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28446 states. [2024-11-27 23:18:53,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28446 to 28426. [2024-11-27 23:18:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28426 states, 23541 states have (on average 1.6009940104498535) internal successors, (37689), 23548 states have internal predecessors, (37689), 4836 states have call successors, (4836), 43 states have call predecessors, (4836), 48 states have return successors, (5452), 4834 states have call predecessors, (5452), 4831 states have call successors, (5452) [2024-11-27 23:18:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28426 states to 28426 states and 47977 transitions. [2024-11-27 23:18:53,891 INFO L78 Accepts]: Start accepts. Automaton has 28426 states and 47977 transitions. Word has length 130 [2024-11-27 23:18:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:53,892 INFO L471 AbstractCegarLoop]: Abstraction has 28426 states and 47977 transitions. [2024-11-27 23:18:53,892 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 28426 states and 47977 transitions. [2024-11-27 23:18:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-27 23:18:53,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:53,940 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:53,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:18:53,940 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:53,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:53,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1574836206, now seen corresponding path program 1 times [2024-11-27 23:18:53,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:53,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304114061] [2024-11-27 23:18:53,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:53,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:54,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:54,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304114061] [2024-11-27 23:18:54,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304114061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:54,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:54,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150353238] [2024-11-27 23:18:54,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:54,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:18:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:54,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:18:54,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:54,024 INFO L87 Difference]: Start difference. First operand 28426 states and 47977 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:56,239 INFO L93 Difference]: Finished difference Result 77302 states and 130939 transitions. [2024-11-27 23:18:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:18:56,240 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2024-11-27 23:18:56,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:56,548 INFO L225 Difference]: With dead ends: 77302 [2024-11-27 23:18:56,548 INFO L226 Difference]: Without dead ends: 51756 [2024-11-27 23:18:56,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:18:56,643 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 88 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 880 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 [2024-11-27 23:18:56,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 880 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51756 states. [2024-11-27 23:18:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51756 to 51736. [2024-11-27 23:18:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51736 states, 43136 states have (on average 1.5954886869436202) internal successors, (68823), 43143 states have internal predecessors, (68823), 8551 states have call successors, (8551), 43 states have call predecessors, (8551), 48 states have return successors, (9699), 8549 states have call predecessors, (9699), 8546 states have call successors, (9699) [2024-11-27 23:18:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51736 states to 51736 states and 87073 transitions. [2024-11-27 23:18:59,875 INFO L78 Accepts]: Start accepts. Automaton has 51736 states and 87073 transitions. Word has length 131 [2024-11-27 23:18:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:59,876 INFO L471 AbstractCegarLoop]: Abstraction has 51736 states and 87073 transitions. [2024-11-27 23:18:59,876 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:18:59,876 INFO L276 IsEmpty]: Start isEmpty. Operand 51736 states and 87073 transitions. [2024-11-27 23:18:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-27 23:18:59,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:59,922 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:59,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:18:59,923 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:59,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1846691399, now seen corresponding path program 1 times [2024-11-27 23:18:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:59,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509073620] [2024-11-27 23:18:59,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:19:00,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:00,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509073620] [2024-11-27 23:19:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509073620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:00,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:00,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:19:00,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807871474] [2024-11-27 23:19:00,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:00,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:19:00,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:00,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:19:00,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:19:00,011 INFO L87 Difference]: Start difference. First operand 51736 states and 87073 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:19:03,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:03,108 INFO L93 Difference]: Finished difference Result 96554 states and 162781 transitions. [2024-11-27 23:19:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:19:03,109 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2024-11-27 23:19:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:03,775 INFO L225 Difference]: With dead ends: 96554 [2024-11-27 23:19:03,775 INFO L226 Difference]: Without dead ends: 96127 [2024-11-27 23:19:03,836 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 [2024-11-27 23:19:03,838 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 83 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 890 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 [2024-11-27 23:19:03,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 890 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:19:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96127 states. [2024-11-27 23:19:07,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96127 to 96107. [2024-11-27 23:19:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96107 states, 80708 states have (on average 1.5882192595529563) internal successors, (128182), 80715 states have internal predecessors, (128182), 15350 states have call successors, (15350), 43 states have call predecessors, (15350), 48 states have return successors, (17544), 15348 states have call predecessors, (17544), 15345 states have call successors, (17544) [2024-11-27 23:19:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96107 states to 96107 states and 161076 transitions. [2024-11-27 23:19:08,936 INFO L78 Accepts]: Start accepts. Automaton has 96107 states and 161076 transitions. Word has length 132 [2024-11-27 23:19:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:08,936 INFO L471 AbstractCegarLoop]: Abstraction has 96107 states and 161076 transitions. [2024-11-27 23:19:08,937 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, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:19:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 96107 states and 161076 transitions. [2024-11-27 23:19:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 23:19:08,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:08,997 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:08,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:19:08,997 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:08,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 894512111, now seen corresponding path program 1 times [2024-11-27 23:19:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650916876] [2024-11-27 23:19:08,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:08,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:19:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650916876] [2024-11-27 23:19:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650916876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:09,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:19:09,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 23:19:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418073276] [2024-11-27 23:19:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:09,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:19:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:09,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:19:09,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:19:09,944 INFO L87 Difference]: Start difference. First operand 96107 states and 161076 transitions. Second operand has 11 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-27 23:19:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:12,847 INFO L93 Difference]: Finished difference Result 96595 states and 161760 transitions. [2024-11-27 23:19:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:19:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 133 [2024-11-27 23:19:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:13,424 INFO L225 Difference]: With dead ends: 96595 [2024-11-27 23:19:13,424 INFO L226 Difference]: Without dead ends: 96088 [2024-11-27 23:19:13,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:19:13,468 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 108 mSDsluCounter, 3882 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 4315 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:13,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 4315 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:19:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96088 states. [2024-11-27 23:19:17,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96088 to 96080. [2024-11-27 23:19:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96080 states, 80686 states have (on average 1.588280494757455) internal successors, (128152), 80693 states have internal predecessors, (128152), 15348 states have call successors, (15348), 42 states have call predecessors, (15348), 45 states have return successors, (17541), 15344 states have call predecessors, (17541), 15344 states have call successors, (17541) [2024-11-27 23:19:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96080 states to 96080 states and 161041 transitions. [2024-11-27 23:19:17,476 INFO L78 Accepts]: Start accepts. Automaton has 96080 states and 161041 transitions. Word has length 133 [2024-11-27 23:19:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:17,477 INFO L471 AbstractCegarLoop]: Abstraction has 96080 states and 161041 transitions. [2024-11-27 23:19:17,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-27 23:19:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 96080 states and 161041 transitions. [2024-11-27 23:19:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 23:19:17,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:17,550 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:17,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:19:17,551 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:17,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash 793691321, now seen corresponding path program 1 times [2024-11-27 23:19:17,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:17,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410178060] [2024-11-27 23:19:17,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:17,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:19:18,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:18,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410178060] [2024-11-27 23:19:18,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410178060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:18,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183664755] [2024-11-27 23:19:18,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:18,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:18,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:18,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:18,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:19:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:19,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 23:19:19,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:19:19,636 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:19:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183664755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:19:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:19:19,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 27 [2024-11-27 23:19:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245510130] [2024-11-27 23:19:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:19:19,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:19:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:19,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:19:19,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:19:19,639 INFO L87 Difference]: Start difference. First operand 96080 states and 161041 transitions. Second operand has 13 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-27 23:19:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:23,189 INFO L93 Difference]: Finished difference Result 96723 states and 161924 transitions. [2024-11-27 23:19:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:19:23,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 136 [2024-11-27 23:19:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:23,663 INFO L225 Difference]: With dead ends: 96723 [2024-11-27 23:19:23,663 INFO L226 Difference]: Without dead ends: 96560 [2024-11-27 23:19:23,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=1541, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 23:19:23,708 INFO L435 NwaCegarLoop]: 447 mSDtfsCounter, 699 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 4528 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:23,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 4528 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:19:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96560 states. [2024-11-27 23:19:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96560 to 96486. [2024-11-27 23:19:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96486 states, 81004 states have (on average 1.5876623376623376) internal successors, (128607), 81022 states have internal predecessors, (128607), 15397 states have call successors, (15397), 71 states have call predecessors, (15397), 84 states have return successors, (17604), 15392 states have call predecessors, (17604), 15391 states have call successors, (17604) [2024-11-27 23:19:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96486 states to 96486 states and 161608 transitions. [2024-11-27 23:19:27,341 INFO L78 Accepts]: Start accepts. Automaton has 96486 states and 161608 transitions. Word has length 136 [2024-11-27 23:19:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:27,341 INFO L471 AbstractCegarLoop]: Abstraction has 96486 states and 161608 transitions. [2024-11-27 23:19:27,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.416666666666666) internal successors, (101), 11 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-27 23:19:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 96486 states and 161608 transitions. [2024-11-27 23:19:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-27 23:19:27,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:27,405 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:27,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:19:27,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:27,610 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:27,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash -120635480, now seen corresponding path program 1 times [2024-11-27 23:19:27,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:27,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4936032] [2024-11-27 23:19:27,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:27,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:19:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4936032] [2024-11-27 23:19:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4936032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064946514] [2024-11-27 23:19:28,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:28,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:28,288 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:28,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db95f6bc-e696-483c-9134-233b6053611d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:19:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:28,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 23:19:28,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:19:29,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:19:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 23:19:30,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064946514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:19:30,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:19:30,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 49 [2024-11-27 23:19:30,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896603793] [2024-11-27 23:19:30,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:19:30,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-27 23:19:30,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:30,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-27 23:19:30,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2186, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 23:19:30,640 INFO L87 Difference]: Start difference. First operand 96486 states and 161608 transitions. Second operand has 49 states, 40 states have (on average 6.725) internal successors, (269), 46 states have internal predecessors, (269), 16 states have call successors, (46), 10 states have call predecessors, (46), 18 states have return successors, (39), 10 states have call predecessors, (39), 15 states have call successors, (39)