./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product30.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_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/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_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/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_39dd15bf-3353-4140-9a98-bbb65767271e/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 77340ea3311b00efe6580b7964ad9e7e4d288fea0ba2d6706c8abdac4c4c4bb5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:05:34,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:05:34,694 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:05:34,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:05:34,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:05:34,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:05:34,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:05:34,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:05:34,755 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:05:34,756 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:05:34,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:05:34,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:05:34,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:05:34,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:05:34,757 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:05:34,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:05:34,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:05:34,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:05:34,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:05:34,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:05:34,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:05:34,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:05:34,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:05:34,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:05:34,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:05:34,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:05:34,761 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:05:34,761 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:05:34,762 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:05:34,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:05:34,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:05:34,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:05:34,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:34,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:05:34,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:05:34,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:05:34,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:05:34,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:34,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:05:34,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:05:34,763 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:05:34,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:05:34,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:05:34,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:05:34,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:05:34,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:05:34,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:05:34,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:05:34,764 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_39dd15bf-3353-4140-9a98-bbb65767271e/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 -> 77340ea3311b00efe6580b7964ad9e7e4d288fea0ba2d6706c8abdac4c4c4bb5 [2024-11-27 20:05:35,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:05:35,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:05:35,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:05:35,177 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:05:35,178 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:05:35,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec27_product30.cil.c [2024-11-27 20:05:38,918 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/data/f9205f216/3d58c83a6b604ca4bae26b07e89c37b3/FLAG504b7c95e [2024-11-27 20:05:39,369 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:05:39,370 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c [2024-11-27 20:05:39,398 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/data/f9205f216/3d58c83a6b604ca4bae26b07e89c37b3/FLAG504b7c95e [2024-11-27 20:05:39,426 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/data/f9205f216/3d58c83a6b604ca4bae26b07e89c37b3 [2024-11-27 20:05:39,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:05:39,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:05:39,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:05:39,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:05:39,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:05:39,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:05:39" (1/1) ... [2024-11-27 20:05:39,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490bd131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:39, skipping insertion in model container [2024-11-27 20:05:39,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:05:39" (1/1) ... [2024-11-27 20:05:39,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:05:40,210 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_39dd15bf-3353-4140-9a98-bbb65767271e/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c[47628,47641] [2024-11-27 20:05:40,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:05:40,374 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:05:40,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2024-11-27 20:05:40,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1128] [2024-11-27 20:05:40,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1146] [2024-11-27 20:05:40,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1371] [2024-11-27 20:05:40,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [1420] [2024-11-27 20:05:40,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1455] [2024-11-27 20:05:40,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1828] [2024-11-27 20:05:40,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2226] [2024-11-27 20:05:40,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2235] [2024-11-27 20:05:40,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2371] [2024-11-27 20:05:40,390 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2737] [2024-11-27 20:05:40,532 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_39dd15bf-3353-4140-9a98-bbb65767271e/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c[47628,47641] [2024-11-27 20:05:40,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:05:40,640 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:05:40,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40 WrapperNode [2024-11-27 20:05:40,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:05:40,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:05:40,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:05:40,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:05:40,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,738 INFO L138 Inliner]: procedures = 131, calls = 205, calls flagged for inlining = 59, calls inlined = 50, statements flattened = 917 [2024-11-27 20:05:40,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:05:40,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:05:40,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:05:40,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:05:40,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,819 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 20:05:40,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,839 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:05:40,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:05:40,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:05:40,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:05:40,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (1/1) ... [2024-11-27 20:05:40,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:40,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:05:41,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:05:41,041 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-27 20:05:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-27 20:05:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-27 20:05:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-27 20:05:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-27 20:05:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-27 20:05:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-27 20:05:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-27 20:05:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-27 20:05:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-27 20:05:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-27 20:05:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-27 20:05:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-27 20:05:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-27 20:05:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-27 20:05:41,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-27 20:05:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-27 20:05:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-27 20:05:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-27 20:05:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-27 20:05:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-27 20:05:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-27 20:05:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-27 20:05:41,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-27 20:05:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:05:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-27 20:05:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-27 20:05:41,047 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-27 20:05:41,047 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-27 20:05:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-27 20:05:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-27 20:05:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-27 20:05:41,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-27 20:05:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-27 20:05:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-27 20:05:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2024-11-27 20:05:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2024-11-27 20:05:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-27 20:05:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-27 20:05:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-27 20:05:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-27 20:05:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-27 20:05:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-27 20:05:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-27 20:05:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-27 20:05:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-27 20:05:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-27 20:05:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:05:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:05:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:05:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:05:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-27 20:05:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-27 20:05:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:05:41,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:05:41,352 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:05:41,355 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:05:42,910 INFO L? ?]: Removed 437 outVars from TransFormulas that were not future-live. [2024-11-27 20:05:42,911 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:05:42,947 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:05:42,948 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:05:42,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:05:42 BoogieIcfgContainer [2024-11-27 20:05:42,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:05:42,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:05:42,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:05:42,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:05:42,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:05:39" (1/3) ... [2024-11-27 20:05:42,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d02550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:05:42, skipping insertion in model container [2024-11-27 20:05:42,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:40" (2/3) ... [2024-11-27 20:05:42,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d02550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:05:42, skipping insertion in model container [2024-11-27 20:05:42,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:05:42" (3/3) ... [2024-11-27 20:05:42,963 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.c [2024-11-27 20:05:42,981 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:05:42,984 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec27_product30.cil.c that has 25 procedures, 353 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:05:43,085 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:05:43,108 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;@419ff104, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:05:43,109 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:05:43,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 273 states have (on average 1.5164835164835164) internal successors, (414), 277 states have internal predecessors, (414), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-27 20:05:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-27 20:05:43,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:43,148 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:43,148 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:43,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1881730979, now seen corresponding path program 1 times [2024-11-27 20:05:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897268777] [2024-11-27 20:05:43,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:43,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 20:05:44,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:44,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897268777] [2024-11-27 20:05:44,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897268777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862316169] [2024-11-27 20:05:44,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:44,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:44,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:44,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:05:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:45,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:05:45,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 20:05:45,261 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:05:45,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862316169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:45,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:05:45,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-27 20:05:45,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288008694] [2024-11-27 20:05:45,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:45,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:05:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:45,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:05:45,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:05:45,310 INFO L87 Difference]: Start difference. First operand has 353 states, 273 states have (on average 1.5164835164835164) internal successors, (414), 277 states have internal predecessors, (414), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:45,423 INFO L93 Difference]: Finished difference Result 553 states and 799 transitions. [2024-11-27 20:05:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:05:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2024-11-27 20:05:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:45,451 INFO L225 Difference]: With dead ends: 553 [2024-11-27 20:05:45,451 INFO L226 Difference]: Without dead ends: 346 [2024-11-27 20:05:45,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 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 20:05:45,461 INFO L435 NwaCegarLoop]: 518 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, 518 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 20:05:45,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:05:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-27 20:05:45,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-11-27 20:05:45,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 267 states have (on average 1.5093632958801497) internal successors, (403), 270 states have internal predecessors, (403), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-27 20:05:45,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 510 transitions. [2024-11-27 20:05:45,553 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 510 transitions. Word has length 142 [2024-11-27 20:05:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:45,557 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 510 transitions. [2024-11-27 20:05:45,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 510 transitions. [2024-11-27 20:05:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-27 20:05:45,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:45,574 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:45,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:05:45,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:45,775 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:45,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash 679886377, now seen corresponding path program 1 times [2024-11-27 20:05:45,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:45,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208563429] [2024-11-27 20:05:45,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 20:05:46,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:46,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208563429] [2024-11-27 20:05:46,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208563429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:46,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41556387] [2024-11-27 20:05:46,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:46,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:46,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:46,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:46,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:05:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:46,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:05:46,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 20:05:46,980 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:05:46,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41556387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:46,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:05:46,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:05:46,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806238562] [2024-11-27 20:05:46,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:46,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:05:46,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:46,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:05:46,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:05:46,983 INFO L87 Difference]: Start difference. First operand 346 states and 510 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:47,068 INFO L93 Difference]: Finished difference Result 542 states and 779 transitions. [2024-11-27 20:05:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:05:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2024-11-27 20:05:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:47,079 INFO L225 Difference]: With dead ends: 542 [2024-11-27 20:05:47,079 INFO L226 Difference]: Without dead ends: 348 [2024-11-27 20:05:47,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 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 20:05:47,084 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 1 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1014 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 20:05:47,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1014 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:05:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-27 20:05:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2024-11-27 20:05:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 268 states have (on average 1.507462686567164) internal successors, (404), 271 states have internal predecessors, (404), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-27 20:05:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 511 transitions. [2024-11-27 20:05:47,146 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 511 transitions. Word has length 142 [2024-11-27 20:05:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:47,149 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 511 transitions. [2024-11-27 20:05:47,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 511 transitions. [2024-11-27 20:05:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-27 20:05:47,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:47,156 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:47,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:05:47,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-27 20:05:47,357 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:47,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:47,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1790238396, now seen corresponding path program 1 times [2024-11-27 20:05:47,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:47,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896576185] [2024-11-27 20:05:47,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:47,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:05:47,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896576185] [2024-11-27 20:05:47,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896576185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:47,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532491029] [2024-11-27 20:05:47,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:47,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:47,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:47,817 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:47,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:05:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:48,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:05:48,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 20:05:48,397 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:05:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532491029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:48,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:05:48,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:05:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436803322] [2024-11-27 20:05:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:48,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:05:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:48,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:05:48,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:05:48,403 INFO L87 Difference]: Start difference. First operand 347 states and 511 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:48,482 INFO L93 Difference]: Finished difference Result 724 states and 1081 transitions. [2024-11-27 20:05:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:05:48,482 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 150 [2024-11-27 20:05:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:48,487 INFO L225 Difference]: With dead ends: 724 [2024-11-27 20:05:48,487 INFO L226 Difference]: Without dead ends: 403 [2024-11-27 20:05:48,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 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 20:05:48,490 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 107 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 980 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 20:05:48,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 980 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:05:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-27 20:05:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 395. [2024-11-27 20:05:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 305 states have (on average 1.5245901639344261) internal successors, (465), 308 states have internal predecessors, (465), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-27 20:05:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 594 transitions. [2024-11-27 20:05:48,540 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 594 transitions. Word has length 150 [2024-11-27 20:05:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:48,541 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 594 transitions. [2024-11-27 20:05:48,541 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 594 transitions. [2024-11-27 20:05:48,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-27 20:05:48,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:48,549 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:48,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:05:48,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-27 20:05:48,751 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:48,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1817815171, now seen corresponding path program 1 times [2024-11-27 20:05:48,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:48,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733461482] [2024-11-27 20:05:48,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:48,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:05:49,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:49,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733461482] [2024-11-27 20:05:49,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733461482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685241369] [2024-11-27 20:05:49,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:49,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:49,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:49,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:49,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:05:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:49,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:05:49,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:05:49,850 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:05:49,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685241369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:49,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:05:49,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-27 20:05:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279946232] [2024-11-27 20:05:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:49,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:05:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:49,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:05:49,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:05:49,858 INFO L87 Difference]: Start difference. First operand 395 states and 594 transitions. Second operand has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:50,034 INFO L93 Difference]: Finished difference Result 781 states and 1178 transitions. [2024-11-27 20:05:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:05:50,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2024-11-27 20:05:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:50,044 INFO L225 Difference]: With dead ends: 781 [2024-11-27 20:05:50,044 INFO L226 Difference]: Without dead ends: 397 [2024-11-27 20:05:50,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 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 20:05:50,048 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 2 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:50,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1997 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:05:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-27 20:05:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-27 20:05:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 306 states have (on average 1.522875816993464) internal successors, (466), 310 states have internal predecessors, (466), 65 states have call successors, (65), 24 states have call predecessors, (65), 25 states have return successors, (66), 64 states have call predecessors, (66), 64 states have call successors, (66) [2024-11-27 20:05:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 597 transitions. [2024-11-27 20:05:50,102 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 597 transitions. Word has length 151 [2024-11-27 20:05:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:50,102 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 597 transitions. [2024-11-27 20:05:50,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 597 transitions. [2024-11-27 20:05:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 20:05:50,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:50,112 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:50,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:05:50,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:50,313 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:50,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1359582404, now seen corresponding path program 1 times [2024-11-27 20:05:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:50,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864476535] [2024-11-27 20:05:50,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:50,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:05:50,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:50,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864476535] [2024-11-27 20:05:50,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864476535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:50,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346535460] [2024-11-27 20:05:50,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:50,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:50,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:50,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:50,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:05:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:51,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 1212 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:05:51,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 20:05:51,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:05:51,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346535460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:51,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:05:51,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-27 20:05:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357119803] [2024-11-27 20:05:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:51,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:05:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:51,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:05:51,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:05:51,320 INFO L87 Difference]: Start difference. First operand 397 states and 597 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:51,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:51,431 INFO L93 Difference]: Finished difference Result 783 states and 1183 transitions. [2024-11-27 20:05:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:05:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 152 [2024-11-27 20:05:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:51,440 INFO L225 Difference]: With dead ends: 783 [2024-11-27 20:05:51,440 INFO L226 Difference]: Without dead ends: 399 [2024-11-27 20:05:51,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 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 20:05:51,445 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 2 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1983 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 20:05:51,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1983 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:05:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-27 20:05:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2024-11-27 20:05:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 307 states have (on average 1.521172638436482) internal successors, (467), 312 states have internal predecessors, (467), 65 states have call successors, (65), 24 states have call predecessors, (65), 26 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2024-11-27 20:05:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 603 transitions. [2024-11-27 20:05:51,490 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 603 transitions. Word has length 152 [2024-11-27 20:05:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:51,490 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 603 transitions. [2024-11-27 20:05:51,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:51,490 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 603 transitions. [2024-11-27 20:05:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-27 20:05:51,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:51,499 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:51,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:05:51,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:51,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:51,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:51,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1492555068, now seen corresponding path program 1 times [2024-11-27 20:05:51,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:51,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715085919] [2024-11-27 20:05:51,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:51,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:05:52,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:52,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715085919] [2024-11-27 20:05:52,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715085919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:52,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:52,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:05:52,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907107009] [2024-11-27 20:05:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:52,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:05:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:52,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:05:52,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:05:52,034 INFO L87 Difference]: Start difference. First operand 399 states and 603 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:52,120 INFO L93 Difference]: Finished difference Result 775 states and 1174 transitions. [2024-11-27 20:05:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:05:52,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2024-11-27 20:05:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:52,126 INFO L225 Difference]: With dead ends: 775 [2024-11-27 20:05:52,126 INFO L226 Difference]: Without dead ends: 399 [2024-11-27 20:05:52,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:05:52,129 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 2 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2001 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 20:05:52,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2001 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:05:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-27 20:05:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2024-11-27 20:05:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 307 states have (on average 1.521172638436482) internal successors, (467), 312 states have internal predecessors, (467), 65 states have call successors, (65), 24 states have call predecessors, (65), 26 states have return successors, (70), 64 states have call predecessors, (70), 64 states have call successors, (70) [2024-11-27 20:05:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 602 transitions. [2024-11-27 20:05:52,169 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 602 transitions. Word has length 153 [2024-11-27 20:05:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:52,170 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 602 transitions. [2024-11-27 20:05:52,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 602 transitions. [2024-11-27 20:05:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:05:52,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:52,179 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:52,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:05:52,179 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:52,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 815822041, now seen corresponding path program 2 times [2024-11-27 20:05:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:52,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65548448] [2024-11-27 20:05:52,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:05:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:52,246 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:05:52,247 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:05:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 20:05:52,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:52,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65548448] [2024-11-27 20:05:52,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65548448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:52,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:52,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:05:52,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159479885] [2024-11-27 20:05:52,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:52,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:05:52,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:52,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:05:52,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:05:52,590 INFO L87 Difference]: Start difference. First operand 399 states and 602 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:53,371 INFO L93 Difference]: Finished difference Result 920 states and 1395 transitions. [2024-11-27 20:05:53,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:05:53,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 154 [2024-11-27 20:05:53,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:53,380 INFO L225 Difference]: With dead ends: 920 [2024-11-27 20:05:53,380 INFO L226 Difference]: Without dead ends: 732 [2024-11-27 20:05:53,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:05:53,383 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 942 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:53,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2979 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:05:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-27 20:05:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 676. [2024-11-27 20:05:53,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 525 states have (on average 1.5561904761904761) internal successors, (817), 531 states have internal predecessors, (817), 108 states have call successors, (108), 41 states have call predecessors, (108), 42 states have return successors, (123), 106 states have call predecessors, (123), 107 states have call successors, (123) [2024-11-27 20:05:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1048 transitions. [2024-11-27 20:05:53,448 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1048 transitions. Word has length 154 [2024-11-27 20:05:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:53,449 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 1048 transitions. [2024-11-27 20:05:53,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1048 transitions. [2024-11-27 20:05:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 20:05:53,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:53,456 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:53,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:05:53,456 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:53,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1060355703, now seen corresponding path program 1 times [2024-11-27 20:05:53,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:53,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930594768] [2024-11-27 20:05:53,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:53,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:05:53,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930594768] [2024-11-27 20:05:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930594768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:53,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:53,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:05:53,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382584966] [2024-11-27 20:05:53,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:53,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:05:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:53,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:05:53,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:05:53,865 INFO L87 Difference]: Start difference. First operand 676 states and 1048 transitions. Second operand has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:53,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:53,967 INFO L93 Difference]: Finished difference Result 1321 states and 2056 transitions. [2024-11-27 20:05:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:05:53,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-27 20:05:53,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:53,975 INFO L225 Difference]: With dead ends: 1321 [2024-11-27 20:05:53,975 INFO L226 Difference]: Without dead ends: 680 [2024-11-27 20:05:53,978 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 20:05:53,979 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 1 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2004 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 20:05:53,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2004 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:05:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-27 20:05:54,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2024-11-27 20:05:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 527 states have (on average 1.554079696394687) internal successors, (819), 535 states have internal predecessors, (819), 108 states have call successors, (108), 41 states have call predecessors, (108), 44 states have return successors, (126), 106 states have call predecessors, (126), 107 states have call successors, (126) [2024-11-27 20:05:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1053 transitions. [2024-11-27 20:05:54,049 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1053 transitions. Word has length 155 [2024-11-27 20:05:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:54,050 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 1053 transitions. [2024-11-27 20:05:54,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:54,050 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1053 transitions. [2024-11-27 20:05:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 20:05:54,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:54,058 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:54,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:05:54,058 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:54,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash 850129985, now seen corresponding path program 1 times [2024-11-27 20:05:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739057772] [2024-11-27 20:05:54,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 20:05:54,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739057772] [2024-11-27 20:05:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739057772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:54,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:54,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:05:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413708587] [2024-11-27 20:05:54,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:54,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:05:54,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:54,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:05:54,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:05:54,391 INFO L87 Difference]: Start difference. First operand 680 states and 1053 transitions. Second operand has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-27 20:05:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:54,640 INFO L93 Difference]: Finished difference Result 1320 states and 2049 transitions. [2024-11-27 20:05:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:05:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 156 [2024-11-27 20:05:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:54,647 INFO L225 Difference]: With dead ends: 1320 [2024-11-27 20:05:54,648 INFO L226 Difference]: Without dead ends: 684 [2024-11-27 20:05:54,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:05:54,651 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 7 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:54,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3429 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:05:54,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-11-27 20:05:54,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 682. [2024-11-27 20:05:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 529 states have (on average 1.551984877126654) internal successors, (821), 536 states have internal predecessors, (821), 108 states have call successors, (108), 42 states have call predecessors, (108), 44 states have return successors, (124), 106 states have call predecessors, (124), 107 states have call successors, (124) [2024-11-27 20:05:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1053 transitions. [2024-11-27 20:05:54,707 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1053 transitions. Word has length 156 [2024-11-27 20:05:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:54,707 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 1053 transitions. [2024-11-27 20:05:54,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-27 20:05:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1053 transitions. [2024-11-27 20:05:54,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 20:05:54,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:54,714 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:54,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:05:54,714 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:54,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:54,715 INFO L85 PathProgramCache]: Analyzing trace with hash -337189005, now seen corresponding path program 2 times [2024-11-27 20:05:54,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:54,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200868372] [2024-11-27 20:05:54,715 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:05:54,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:54,766 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:05:54,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:05:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 20:05:55,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:55,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200868372] [2024-11-27 20:05:55,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200868372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:55,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:55,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:05:55,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649653217] [2024-11-27 20:05:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:55,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:05:55,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:55,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:05:55,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:05:55,117 INFO L87 Difference]: Start difference. First operand 682 states and 1053 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:55,376 INFO L93 Difference]: Finished difference Result 920 states and 1391 transitions. [2024-11-27 20:05:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:05:55,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 157 [2024-11-27 20:05:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:55,385 INFO L225 Difference]: With dead ends: 920 [2024-11-27 20:05:55,385 INFO L226 Difference]: Without dead ends: 730 [2024-11-27 20:05:55,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:05:55,391 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 40 mSDsluCounter, 3685 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:55,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 4220 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:05:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-27 20:05:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 721. [2024-11-27 20:05:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 553 states have (on average 1.5443037974683544) internal successors, (854), 563 states have internal predecessors, (854), 122 states have call successors, (122), 42 states have call predecessors, (122), 45 states have return successors, (142), 119 states have call predecessors, (142), 121 states have call successors, (142) [2024-11-27 20:05:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1118 transitions. [2024-11-27 20:05:55,469 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1118 transitions. Word has length 157 [2024-11-27 20:05:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:55,472 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1118 transitions. [2024-11-27 20:05:55,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:05:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1118 transitions. [2024-11-27 20:05:55,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-27 20:05:55,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:55,481 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:55,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:05:55,481 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:55,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash -381429687, now seen corresponding path program 1 times [2024-11-27 20:05:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:55,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830555748] [2024-11-27 20:05:55,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:55,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 20:05:55,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:55,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830555748] [2024-11-27 20:05:55,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830555748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:55,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175124086] [2024-11-27 20:05:55,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:55,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:55,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:55,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:55,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:05:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:56,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:05:56,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 20:05:56,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:05:56,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175124086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:56,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:05:56,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-27 20:05:56,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817308940] [2024-11-27 20:05:56,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:56,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:05:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:56,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:05:56,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:05:56,357 INFO L87 Difference]: Start difference. First operand 721 states and 1118 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:56,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:56,479 INFO L93 Difference]: Finished difference Result 1237 states and 1899 transitions. [2024-11-27 20:05:56,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:05:56,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2024-11-27 20:05:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:56,487 INFO L225 Difference]: With dead ends: 1237 [2024-11-27 20:05:56,487 INFO L226 Difference]: Without dead ends: 727 [2024-11-27 20:05:56,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:05:56,490 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 1 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:56,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1994 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:05:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-27 20:05:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 723. [2024-11-27 20:05:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 554 states have (on average 1.5433212996389891) internal successors, (855), 565 states have internal predecessors, (855), 122 states have call successors, (122), 42 states have call predecessors, (122), 46 states have return successors, (145), 119 states have call predecessors, (145), 121 states have call successors, (145) [2024-11-27 20:05:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1122 transitions. [2024-11-27 20:05:56,553 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1122 transitions. Word has length 159 [2024-11-27 20:05:56,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:56,554 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1122 transitions. [2024-11-27 20:05:56,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:56,554 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1122 transitions. [2024-11-27 20:05:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 20:05:56,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:56,561 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:56,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:05:56,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:56,762 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:56,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash -810580377, now seen corresponding path program 1 times [2024-11-27 20:05:56,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:56,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564755667] [2024-11-27 20:05:56,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:57,125 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:05:57,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:57,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564755667] [2024-11-27 20:05:57,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564755667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:57,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:57,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:05:57,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773984463] [2024-11-27 20:05:57,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:57,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:05:57,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:57,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:05:57,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:05:57,129 INFO L87 Difference]: Start difference. First operand 723 states and 1122 transitions. Second operand has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-27 20:05:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:57,433 INFO L93 Difference]: Finished difference Result 1415 states and 2203 transitions. [2024-11-27 20:05:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:05:57,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 158 [2024-11-27 20:05:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:57,444 INFO L225 Difference]: With dead ends: 1415 [2024-11-27 20:05:57,445 INFO L226 Difference]: Without dead ends: 733 [2024-11-27 20:05:57,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:05:57,450 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 5 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:57,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3443 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:05:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-27 20:05:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2024-11-27 20:05:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 560 states have (on average 1.5375) internal successors, (861), 572 states have internal predecessors, (861), 122 states have call successors, (122), 43 states have call predecessors, (122), 48 states have return successors, (151), 119 states have call predecessors, (151), 121 states have call successors, (151) [2024-11-27 20:05:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1134 transitions. [2024-11-27 20:05:57,542 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1134 transitions. Word has length 158 [2024-11-27 20:05:57,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:57,543 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1134 transitions. [2024-11-27 20:05:57,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-27 20:05:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1134 transitions. [2024-11-27 20:05:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-27 20:05:57,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:57,553 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:57,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:05:57,553 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:57,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:57,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1877233573, now seen corresponding path program 1 times [2024-11-27 20:05:57,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:57,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747150022] [2024-11-27 20:05:57,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:57,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-27 20:05:57,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747150022] [2024-11-27 20:05:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747150022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960647629] [2024-11-27 20:05:57,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:57,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:57,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:57,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:57,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:05:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:58,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:05:58,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-27 20:05:58,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-27 20:05:58,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960647629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:05:58,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:05:58,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-27 20:05:58,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651295212] [2024-11-27 20:05:58,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:05:58,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:05:58,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:58,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:05:58,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:05:58,651 INFO L87 Difference]: Start difference. First operand 731 states and 1134 transitions. Second operand has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-27 20:05:59,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:59,042 INFO L93 Difference]: Finished difference Result 1796 states and 2879 transitions. [2024-11-27 20:05:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:05:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 161 [2024-11-27 20:05:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:59,057 INFO L225 Difference]: With dead ends: 1796 [2024-11-27 20:05:59,057 INFO L226 Difference]: Without dead ends: 1273 [2024-11-27 20:05:59,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:05:59,061 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 410 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:59,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 3363 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:05:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2024-11-27 20:05:59,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1237. [2024-11-27 20:05:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 971 states have (on average 1.600411946446962) internal successors, (1554), 975 states have internal predecessors, (1554), 221 states have call successors, (221), 42 states have call predecessors, (221), 44 states have return successors, (264), 223 states have call predecessors, (264), 220 states have call successors, (264) [2024-11-27 20:05:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2039 transitions. [2024-11-27 20:05:59,180 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2039 transitions. Word has length 161 [2024-11-27 20:05:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:59,180 INFO L471 AbstractCegarLoop]: Abstraction has 1237 states and 2039 transitions. [2024-11-27 20:05:59,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 3 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-27 20:05:59,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2039 transitions. [2024-11-27 20:05:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-27 20:05:59,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:59,194 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:59,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:05:59,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:59,395 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:59,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash 589845157, now seen corresponding path program 1 times [2024-11-27 20:05:59,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:59,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284896292] [2024-11-27 20:05:59,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:59,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:05:59,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:59,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284896292] [2024-11-27 20:05:59,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284896292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:59,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:59,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:05:59,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246408794] [2024-11-27 20:05:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:59,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:05:59,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:59,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:05:59,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:05:59,523 INFO L87 Difference]: Start difference. First operand 1237 states and 2039 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:59,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:59,638 INFO L93 Difference]: Finished difference Result 2882 states and 4825 transitions. [2024-11-27 20:05:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:05:59,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 163 [2024-11-27 20:05:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:59,655 INFO L225 Difference]: With dead ends: 2882 [2024-11-27 20:05:59,655 INFO L226 Difference]: Without dead ends: 1728 [2024-11-27 20:05:59,661 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 20:05:59,662 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 105 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1020 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 20:05:59,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1020 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:05:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2024-11-27 20:05:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1718. [2024-11-27 20:05:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1349 states have (on average 1.6115641215715344) internal successors, (2174), 1347 states have internal predecessors, (2174), 324 states have call successors, (324), 42 states have call predecessors, (324), 44 states have return successors, (390), 332 states have call predecessors, (390), 323 states have call successors, (390) [2024-11-27 20:05:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2888 transitions. [2024-11-27 20:05:59,839 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2888 transitions. Word has length 163 [2024-11-27 20:05:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:59,840 INFO L471 AbstractCegarLoop]: Abstraction has 1718 states and 2888 transitions. [2024-11-27 20:05:59,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:05:59,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2888 transitions. [2024-11-27 20:05:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-27 20:05:59,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:59,858 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:59,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:05:59,858 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:59,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash 201771385, now seen corresponding path program 1 times [2024-11-27 20:05:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:59,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120785447] [2024-11-27 20:05:59,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:59,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:06:00,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:00,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120785447] [2024-11-27 20:06:00,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120785447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:00,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471086674] [2024-11-27 20:06:00,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:00,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:00,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:00,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:00,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:06:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:00,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:06:00,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:06:00,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471086674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:00,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-27 20:06:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000880481] [2024-11-27 20:06:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:00,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:00,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:00,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:00,831 INFO L87 Difference]: Start difference. First operand 1718 states and 2888 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:06:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:00,970 INFO L93 Difference]: Finished difference Result 4028 states and 6852 transitions. [2024-11-27 20:06:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 178 [2024-11-27 20:06:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:00,993 INFO L225 Difference]: With dead ends: 4028 [2024-11-27 20:06:00,993 INFO L226 Difference]: Without dead ends: 2476 [2024-11-27 20:06:01,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:01,003 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 99 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1009 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 20:06:01,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1009 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2024-11-27 20:06:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2466. [2024-11-27 20:06:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 1969 states have (on average 1.6236668359573387) internal successors, (3197), 1958 states have internal predecessors, (3197), 452 states have call successors, (452), 42 states have call predecessors, (452), 44 states have return successors, (555), 469 states have call predecessors, (555), 451 states have call successors, (555) [2024-11-27 20:06:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4204 transitions. [2024-11-27 20:06:01,214 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4204 transitions. Word has length 178 [2024-11-27 20:06:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:01,215 INFO L471 AbstractCegarLoop]: Abstraction has 2466 states and 4204 transitions. [2024-11-27 20:06:01,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:06:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4204 transitions. [2024-11-27 20:06:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-27 20:06:01,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:01,241 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:01,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:06:01,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:06:01,444 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:01,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:01,445 INFO L85 PathProgramCache]: Analyzing trace with hash 144709142, now seen corresponding path program 1 times [2024-11-27 20:06:01,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:01,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084441157] [2024-11-27 20:06:01,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:01,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:06:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084441157] [2024-11-27 20:06:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084441157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:01,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:01,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970489940] [2024-11-27 20:06:01,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:01,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:01,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:01,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:01,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:01,611 INFO L87 Difference]: Start difference. First operand 2466 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:01,888 INFO L93 Difference]: Finished difference Result 6300 states and 10816 transitions. [2024-11-27 20:06:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2024-11-27 20:06:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:01,925 INFO L225 Difference]: With dead ends: 6300 [2024-11-27 20:06:01,926 INFO L226 Difference]: Without dead ends: 3972 [2024-11-27 20:06:01,938 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 20:06:01,939 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 103 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1014 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 20:06:01,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1014 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2024-11-27 20:06:02,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 3962. [2024-11-27 20:06:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3187 states have (on average 1.632256040163163) internal successors, (5202), 3176 states have internal predecessors, (5202), 730 states have call successors, (730), 42 states have call predecessors, (730), 44 states have return successors, (859), 747 states have call predecessors, (859), 729 states have call successors, (859) [2024-11-27 20:06:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 6791 transitions. [2024-11-27 20:06:02,286 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 6791 transitions. Word has length 165 [2024-11-27 20:06:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:02,287 INFO L471 AbstractCegarLoop]: Abstraction has 3962 states and 6791 transitions. [2024-11-27 20:06:02,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 6791 transitions. [2024-11-27 20:06:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-27 20:06:02,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:02,320 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:02,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:06:02,321 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:02,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash 283615052, now seen corresponding path program 1 times [2024-11-27 20:06:02,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:02,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93910107] [2024-11-27 20:06:02,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:02,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:06:02,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93910107] [2024-11-27 20:06:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93910107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821683331] [2024-11-27 20:06:02,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:02,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:02,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:02,674 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:02,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:06:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:03,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:06:03,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:06:03,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821683331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:03,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:03,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-27 20:06:03,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007146549] [2024-11-27 20:06:03,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:03,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:03,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:03,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:03,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:03,262 INFO L87 Difference]: Start difference. First operand 3962 states and 6791 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:06:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:03,603 INFO L93 Difference]: Finished difference Result 9352 states and 16170 transitions. [2024-11-27 20:06:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:03,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 179 [2024-11-27 20:06:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:03,653 INFO L225 Difference]: With dead ends: 9352 [2024-11-27 20:06:03,653 INFO L226 Difference]: Without dead ends: 6046 [2024-11-27 20:06:03,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:03,670 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 97 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1009 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 20:06:03,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1009 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2024-11-27 20:06:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 6036. [2024-11-27 20:06:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6036 states, 4941 states have (on average 1.63772515685084) internal successors, (8092), 4918 states have internal predecessors, (8092), 1050 states have call successors, (1050), 42 states have call predecessors, (1050), 44 states have return successors, (1258), 1079 states have call predecessors, (1258), 1049 states have call successors, (1258) [2024-11-27 20:06:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 10400 transitions. [2024-11-27 20:06:04,196 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 10400 transitions. Word has length 179 [2024-11-27 20:06:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:04,200 INFO L471 AbstractCegarLoop]: Abstraction has 6036 states and 10400 transitions. [2024-11-27 20:06:04,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:06:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 10400 transitions. [2024-11-27 20:06:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 20:06:04,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:04,247 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:04,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:06:04,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:06:04,449 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:04,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1700160451, now seen corresponding path program 1 times [2024-11-27 20:06:04,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:04,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9424621] [2024-11-27 20:06:04,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:04,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:06:04,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:04,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9424621] [2024-11-27 20:06:04,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9424621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:04,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125559064] [2024-11-27 20:06:04,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:04,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:04,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:04,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:04,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:06:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:05,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:06:05,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:06:05,365 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:05,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125559064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:05,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:05,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-27 20:06:05,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487804164] [2024-11-27 20:06:05,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:05,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:05,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:05,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:05,368 INFO L87 Difference]: Start difference. First operand 6036 states and 10400 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:06:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:05,916 INFO L93 Difference]: Finished difference Result 14978 states and 25970 transitions. [2024-11-27 20:06:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 180 [2024-11-27 20:06:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:06,028 INFO L225 Difference]: With dead ends: 14978 [2024-11-27 20:06:06,028 INFO L226 Difference]: Without dead ends: 9902 [2024-11-27 20:06:06,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:06,062 INFO L435 NwaCegarLoop]: 529 mSDtfsCounter, 95 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1036 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 20:06:06,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1036 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2024-11-27 20:06:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 9892. [2024-11-27 20:06:06,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9892 states, 8106 states have (on average 1.6321243523316062) internal successors, (13230), 8068 states have internal predecessors, (13230), 1741 states have call successors, (1741), 42 states have call predecessors, (1741), 44 states have return successors, (2088), 1785 states have call predecessors, (2088), 1740 states have call successors, (2088) [2024-11-27 20:06:06,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9892 states to 9892 states and 17059 transitions. [2024-11-27 20:06:06,920 INFO L78 Accepts]: Start accepts. Automaton has 9892 states and 17059 transitions. Word has length 180 [2024-11-27 20:06:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:06,921 INFO L471 AbstractCegarLoop]: Abstraction has 9892 states and 17059 transitions. [2024-11-27 20:06:06,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:06:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 9892 states and 17059 transitions. [2024-11-27 20:06:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-27 20:06:06,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:06,995 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:07,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:06:07,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:06:07,196 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:07,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1966569336, now seen corresponding path program 1 times [2024-11-27 20:06:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170382659] [2024-11-27 20:06:07,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:07,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:06:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170382659] [2024-11-27 20:06:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170382659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722573927] [2024-11-27 20:06:07,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:07,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:07,500 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:07,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:06:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:08,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:06:08,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:06:08,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:08,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722573927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:08,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:08,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-27 20:06:08,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505155504] [2024-11-27 20:06:08,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:08,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:08,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:08,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:08,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:08,159 INFO L87 Difference]: Start difference. First operand 9892 states and 17059 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:06:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:08,895 INFO L93 Difference]: Finished difference Result 25524 states and 44225 transitions. [2024-11-27 20:06:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:08,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 181 [2024-11-27 20:06:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:08,995 INFO L225 Difference]: With dead ends: 25524 [2024-11-27 20:06:08,995 INFO L226 Difference]: Without dead ends: 17080 [2024-11-27 20:06:09,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:09,031 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 93 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:09,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1012 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:06:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17080 states. [2024-11-27 20:06:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17080 to 17070. [2024-11-27 20:06:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17070 states, 14072 states have (on average 1.6308982376350198) internal successors, (22950), 14034 states have internal predecessors, (22950), 2953 states have call successors, (2953), 42 states have call predecessors, (2953), 44 states have return successors, (3489), 2997 states have call predecessors, (3489), 2952 states have call successors, (3489) [2024-11-27 20:06:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17070 states to 17070 states and 29392 transitions. [2024-11-27 20:06:10,405 INFO L78 Accepts]: Start accepts. Automaton has 17070 states and 29392 transitions. Word has length 181 [2024-11-27 20:06:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:10,406 INFO L471 AbstractCegarLoop]: Abstraction has 17070 states and 29392 transitions. [2024-11-27 20:06:10,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:06:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 17070 states and 29392 transitions. [2024-11-27 20:06:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-27 20:06:10,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:10,546 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:10,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:06:10,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39dd15bf-3353-4140-9a98-bbb65767271e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:10,750 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:10,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash 76044505, now seen corresponding path program 1 times [2024-11-27 20:06:10,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:10,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876952481] [2024-11-27 20:06:10,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:06:10,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:10,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876952481] [2024-11-27 20:06:10,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876952481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:10,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:10,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111743108] [2024-11-27 20:06:10,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:10,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:10,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:10,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:10,892 INFO L87 Difference]: Start difference. First operand 17070 states and 29392 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:12,154 INFO L93 Difference]: Finished difference Result 45058 states and 77875 transitions. [2024-11-27 20:06:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2024-11-27 20:06:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:12,350 INFO L225 Difference]: With dead ends: 45058 [2024-11-27 20:06:12,350 INFO L226 Difference]: Without dead ends: 30264 [2024-11-27 20:06:12,402 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 20:06:12,406 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 93 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1042 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 20:06:12,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1042 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30264 states. [2024-11-27 20:06:14,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30264 to 30254. [2024-11-27 20:06:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30254 states, 24925 states have (on average 1.6214242728184554) internal successors, (40414), 24869 states have internal predecessors, (40414), 5284 states have call successors, (5284), 42 states have call predecessors, (5284), 44 states have return successors, (6239), 5346 states have call predecessors, (6239), 5283 states have call successors, (6239) [2024-11-27 20:06:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30254 states to 30254 states and 51937 transitions. [2024-11-27 20:06:14,421 INFO L78 Accepts]: Start accepts. Automaton has 30254 states and 51937 transitions. Word has length 169 [2024-11-27 20:06:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:14,422 INFO L471 AbstractCegarLoop]: Abstraction has 30254 states and 51937 transitions. [2024-11-27 20:06:14,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 30254 states and 51937 transitions. [2024-11-27 20:06:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-27 20:06:14,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:14,575 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:14,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:06:14,575 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:14,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1582955767, now seen corresponding path program 1 times [2024-11-27 20:06:14,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:14,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617371266] [2024-11-27 20:06:14,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:14,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:06:14,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617371266] [2024-11-27 20:06:14,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617371266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:14,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:14,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:14,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457667052] [2024-11-27 20:06:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:14,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:14,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:14,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:14,686 INFO L87 Difference]: Start difference. First operand 30254 states and 51937 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:17,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:17,456 INFO L93 Difference]: Finished difference Result 81681 states and 140809 transitions. [2024-11-27 20:06:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:17,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2024-11-27 20:06:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:17,783 INFO L225 Difference]: With dead ends: 81681 [2024-11-27 20:06:17,784 INFO L226 Difference]: Without dead ends: 54517 [2024-11-27 20:06:17,863 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 20:06:17,865 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 91 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1012 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 20:06:17,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1012 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54517 states. [2024-11-27 20:06:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54517 to 54507. [2024-11-27 20:06:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54507 states, 45182 states have (on average 1.6168385640299234) internal successors, (73052), 45105 states have internal predecessors, (73052), 9280 states have call successors, (9280), 42 states have call predecessors, (9280), 44 states have return successors, (11042), 9363 states have call predecessors, (11042), 9279 states have call successors, (11042) [2024-11-27 20:06:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54507 states to 54507 states and 93374 transitions. [2024-11-27 20:06:21,457 INFO L78 Accepts]: Start accepts. Automaton has 54507 states and 93374 transitions. Word has length 170 [2024-11-27 20:06:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:21,459 INFO L471 AbstractCegarLoop]: Abstraction has 54507 states and 93374 transitions. [2024-11-27 20:06:21,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 54507 states and 93374 transitions. [2024-11-27 20:06:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-27 20:06:22,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:22,019 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:22,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:06:22,019 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:22,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash 471578423, now seen corresponding path program 1 times [2024-11-27 20:06:22,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:22,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765061832] [2024-11-27 20:06:22,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:22,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:06:22,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:22,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765061832] [2024-11-27 20:06:22,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765061832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:22,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:22,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:22,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337142370] [2024-11-27 20:06:22,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:22,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:22,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:22,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:22,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:22,129 INFO L87 Difference]: Start difference. First operand 54507 states and 93374 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:25,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:25,406 INFO L93 Difference]: Finished difference Result 150976 states and 258930 transitions. [2024-11-27 20:06:25,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:25,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2024-11-27 20:06:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:26,056 INFO L225 Difference]: With dead ends: 150976 [2024-11-27 20:06:26,056 INFO L226 Difference]: Without dead ends: 101055 [2024-11-27 20:06:26,211 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 20:06:26,213 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 89 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:26,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1013 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:06:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101055 states. [2024-11-27 20:06:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101055 to 101045. [2024-11-27 20:06:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101045 states, 84296 states have (on average 1.610479738065863) internal successors, (135757), 84219 states have internal predecessors, (135757), 16704 states have call successors, (16704), 42 states have call predecessors, (16704), 44 states have return successors, (19530), 16787 states have call predecessors, (19530), 16703 states have call successors, (19530) [2024-11-27 20:06:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101045 states to 101045 states and 171991 transitions. [2024-11-27 20:06:31,600 INFO L78 Accepts]: Start accepts. Automaton has 101045 states and 171991 transitions. Word has length 171 [2024-11-27 20:06:31,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:31,604 INFO L471 AbstractCegarLoop]: Abstraction has 101045 states and 171991 transitions. [2024-11-27 20:06:31,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 101045 states and 171991 transitions. [2024-11-27 20:06:32,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-27 20:06:32,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:32,518 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:32,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:06:32,518 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:32,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash 219799145, now seen corresponding path program 1 times [2024-11-27 20:06:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:32,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144874630] [2024-11-27 20:06:32,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:06:32,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:32,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144874630] [2024-11-27 20:06:32,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144874630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:32,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:32,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517823016] [2024-11-27 20:06:32,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:32,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:32,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:32,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:32,624 INFO L87 Difference]: Start difference. First operand 101045 states and 171991 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 20:06:37,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:37,631 INFO L93 Difference]: Finished difference Result 189469 states and 323145 transitions. [2024-11-27 20:06:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:37,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 172 [2024-11-27 20:06:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:38,800 INFO L225 Difference]: With dead ends: 189469 [2024-11-27 20:06:38,800 INFO L226 Difference]: Without dead ends: 189157 [2024-11-27 20:06:38,874 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 20:06:38,874 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 84 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1026 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 20:06:38,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1026 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:39,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189157 states. [2024-11-27 20:06:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189157 to 189147. [2024-11-27 20:06:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189147 states, 158903 states have (on average 1.6028772269875333) internal successors, (254702), 158802 states have internal predecessors, (254702), 30199 states have call successors, (30199), 42 states have call predecessors, (30199), 44 states have return successors, (35632), 30306 states have call predecessors, (35632), 30198 states have call successors, (35632)