./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product28.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_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/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_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/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_e9e22bab-070e-4973-a8a5-086adade5ae4/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 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:59:21,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:59:21,986 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:59:22,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:59:22,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:59:22,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:59:22,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:59:22,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:59:22,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:59:22,053 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:59:22,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:59:22,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:59:22,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:59:22,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:59:22,055 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:59:22,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:59:22,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:59:22,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:59:22,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:59:22,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:59:22,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:59:22,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:59:22,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:59:22,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:59:22,056 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:59:22,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:59:22,056 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:59:22,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:59:22,058 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:59:22,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:59:22,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:59:22,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:59:22,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:59:22,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:59:22,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:59:22,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:59:22,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:59:22,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:59:22,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:59:22,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:59:22,060 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:59:22,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:59:22,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:59:22,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:59:22,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:59:22,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:59:22,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:59:22,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:59:22,061 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_e9e22bab-070e-4973-a8a5-086adade5ae4/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 -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2024-11-28 03:59:22,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:59:22,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:59:22,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:59:22,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:59:22,477 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:59:22,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2024-11-28 03:59:26,032 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/data/7dfda5e2b/b27ee5ba2c9f4e6d954c0f7a9da29718/FLAGaab19bdc3 [2024-11-28 03:59:26,646 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:59:26,647 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2024-11-28 03:59:26,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/data/7dfda5e2b/b27ee5ba2c9f4e6d954c0f7a9da29718/FLAGaab19bdc3 [2024-11-28 03:59:26,718 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/data/7dfda5e2b/b27ee5ba2c9f4e6d954c0f7a9da29718 [2024-11-28 03:59:26,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:59:26,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:59:26,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:59:26,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:59:26,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:59:26,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:59:26" (1/1) ... [2024-11-28 03:59:26,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9c3e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:26, skipping insertion in model container [2024-11-28 03:59:26,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:59:26" (1/1) ... [2024-11-28 03:59:26,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:59:27,605 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_e9e22bab-070e-4973-a8a5-086adade5ae4/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2024-11-28 03:59:27,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:59:27,805 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:59:27,815 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [48] [2024-11-28 03:59:27,817 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [95] [2024-11-28 03:59:27,817 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [386] [2024-11-28 03:59:27,818 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [532] [2024-11-28 03:59:27,818 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [898] [2024-11-28 03:59:27,818 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1300] [2024-11-28 03:59:27,818 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1622] [2024-11-28 03:59:27,818 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1631] [2024-11-28 03:59:27,818 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1648] [2024-11-28 03:59:27,819 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1683] [2024-11-28 03:59:27,819 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2752] [2024-11-28 03:59:27,951 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_e9e22bab-070e-4973-a8a5-086adade5ae4/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2024-11-28 03:59:28,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:59:28,088 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:59:28,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28 WrapperNode [2024-11-28 03:59:28,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:59:28,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:59:28,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:59:28,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:59:28,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,206 INFO L138 Inliner]: procedures = 128, calls = 197, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 865 [2024-11-28 03:59:28,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:59:28,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:59:28,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:59:28,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:59:28,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,264 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]. [2024-11-28 03:59:28,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,304 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:59:28,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:59:28,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:59:28,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:59:28,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (1/1) ... [2024-11-28 03:59:28,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:59:28,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:28,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:59:28,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:59:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-28 03:59:28,469 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-28 03:59:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-28 03:59:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-28 03:59:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-28 03:59:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-28 03:59:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-28 03:59:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-28 03:59:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-28 03:59:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-28 03:59:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-28 03:59:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-28 03:59:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-28 03:59:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-28 03:59:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-28 03:59:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-28 03:59:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-28 03:59:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-28 03:59:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-28 03:59:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-28 03:59:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-28 03:59:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-28 03:59:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-28 03:59:28,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-28 03:59:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:59:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-28 03:59:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-28 03:59:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-28 03:59:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-28 03:59:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-28 03:59:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-28 03:59:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-28 03:59:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-28 03:59:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-28 03:59:28,477 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-28 03:59:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2024-11-28 03:59:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2024-11-28 03:59:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-28 03:59:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-28 03:59:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-28 03:59:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-28 03:59:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-28 03:59:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-28 03:59:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-28 03:59:28,478 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-28 03:59:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:59:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:59:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:59:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:59:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-28 03:59:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-28 03:59:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:59:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:59:28,841 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:59:28,844 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:59:30,342 INFO L? ?]: Removed 406 outVars from TransFormulas that were not future-live. [2024-11-28 03:59:30,343 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:59:30,377 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:59:30,377 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:59:30,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:59:30 BoogieIcfgContainer [2024-11-28 03:59:30,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:59:30,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:59:30,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:59:30,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:59:30,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:59:26" (1/3) ... [2024-11-28 03:59:30,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635df874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:59:30, skipping insertion in model container [2024-11-28 03:59:30,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:59:28" (2/3) ... [2024-11-28 03:59:30,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635df874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:59:30, skipping insertion in model container [2024-11-28 03:59:30,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:59:30" (3/3) ... [2024-11-28 03:59:30,398 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2024-11-28 03:59:30,415 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:59:30,417 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec27_product28.cil.c that has 24 procedures, 333 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:59:30,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:59:30,566 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;@39a4751f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:59:30,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:59:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 257 states have (on average 1.5214007782101167) internal successors, (391), 261 states have internal predecessors, (391), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-28 03:59:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 03:59:30,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:30,646 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] [2024-11-28 03:59:30,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:30,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1662804301, now seen corresponding path program 1 times [2024-11-28 03:59:30,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:30,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195852104] [2024-11-28 03:59:30,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 03:59:31,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:31,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195852104] [2024-11-28 03:59:31,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195852104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:31,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356997593] [2024-11-28 03:59:31,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:31,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:31,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:31,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:31,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:59:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:32,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:59:32,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 03:59:32,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:59:32,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356997593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:32,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:59:32,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 03:59:32,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247413650] [2024-11-28 03:59:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:32,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:32,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:32,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:32,798 INFO L87 Difference]: Start difference. First operand has 333 states, 257 states have (on average 1.5214007782101167) internal successors, (391), 261 states have internal predecessors, (391), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:32,937 INFO L93 Difference]: Finished difference Result 520 states and 754 transitions. [2024-11-28 03:59:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2024-11-28 03:59:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:32,957 INFO L225 Difference]: With dead ends: 520 [2024-11-28 03:59:32,958 INFO L226 Difference]: Without dead ends: 328 [2024-11-28 03:59:32,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:32,968 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 1 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:32,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 971 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-28 03:59:33,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2024-11-28 03:59:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.5119047619047619) internal successors, (381), 255 states have internal predecessors, (381), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 03:59:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 482 transitions. [2024-11-28 03:59:33,099 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 482 transitions. Word has length 139 [2024-11-28 03:59:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:33,104 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 482 transitions. [2024-11-28 03:59:33,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:33,105 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 482 transitions. [2024-11-28 03:59:33,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:59:33,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:33,122 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] [2024-11-28 03:59:33,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:59:33,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:33,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:33,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 553048363, now seen corresponding path program 1 times [2024-11-28 03:59:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:33,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976721317] [2024-11-28 03:59:33,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:59:33,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:33,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976721317] [2024-11-28 03:59:33,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976721317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:33,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894622278] [2024-11-28 03:59:33,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:33,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:33,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:33,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:33,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:59:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:34,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:59:34,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 03:59:34,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:59:34,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894622278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:34,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:59:34,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 03:59:34,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644793267] [2024-11-28 03:59:34,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:34,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:34,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:34,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:34,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:34,629 INFO L87 Difference]: Start difference. First operand 327 states and 482 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:34,728 INFO L93 Difference]: Finished difference Result 679 states and 1015 transitions. [2024-11-28 03:59:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 144 [2024-11-28 03:59:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:34,735 INFO L225 Difference]: With dead ends: 679 [2024-11-28 03:59:34,736 INFO L226 Difference]: Without dead ends: 378 [2024-11-28 03:59:34,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:34,742 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 99 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 921 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 [2024-11-28 03:59:34,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 921 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-28 03:59:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 370. [2024-11-28 03:59:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.528169014084507) internal successors, (434), 287 states have internal predecessors, (434), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-28 03:59:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 557 transitions. [2024-11-28 03:59:34,793 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 557 transitions. Word has length 144 [2024-11-28 03:59:34,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:34,793 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 557 transitions. [2024-11-28 03:59:34,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 557 transitions. [2024-11-28 03:59:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:59:34,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:34,798 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] [2024-11-28 03:59:34,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:59:35,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 03:59:35,000 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:35,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:35,001 INFO L85 PathProgramCache]: Analyzing trace with hash -781334428, now seen corresponding path program 1 times [2024-11-28 03:59:35,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:35,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256767467] [2024-11-28 03:59:35,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:35,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:59:35,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:35,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256767467] [2024-11-28 03:59:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256767467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606441636] [2024-11-28 03:59:35,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:35,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:35,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:35,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:35,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:59:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:35,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:59:35,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:59:36,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:59:36,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606441636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:36,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:59:36,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-28 03:59:36,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502761315] [2024-11-28 03:59:36,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:36,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:59:36,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:36,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:59:36,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:59:36,127 INFO L87 Difference]: Start difference. First operand 370 states and 557 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:36,254 INFO L93 Difference]: Finished difference Result 731 states and 1104 transitions. [2024-11-28 03:59:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:59:36,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-11-28 03:59:36,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:36,265 INFO L225 Difference]: With dead ends: 731 [2024-11-28 03:59:36,266 INFO L226 Difference]: Without dead ends: 372 [2024-11-28 03:59:36,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:59:36,272 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 2 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1881 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 [2024-11-28 03:59:36,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1881 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:59:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-28 03:59:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2024-11-28 03:59:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5263157894736843) internal successors, (435), 289 states have internal predecessors, (435), 62 states have call successors, (62), 23 states have call predecessors, (62), 24 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2024-11-28 03:59:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 560 transitions. [2024-11-28 03:59:36,320 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 560 transitions. Word has length 145 [2024-11-28 03:59:36,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:36,320 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 560 transitions. [2024-11-28 03:59:36,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:36,321 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 560 transitions. [2024-11-28 03:59:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:59:36,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:36,326 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] [2024-11-28 03:59:36,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:59:36,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:36,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:36,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash 608612423, now seen corresponding path program 1 times [2024-11-28 03:59:36,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:36,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989073400] [2024-11-28 03:59:36,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:36,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:59:36,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989073400] [2024-11-28 03:59:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989073400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464161981] [2024-11-28 03:59:36,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:36,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:36,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:36,916 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:36,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:59:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:37,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:59:37,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:59:37,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:59:37,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464161981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:37,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:59:37,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-28 03:59:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373858352] [2024-11-28 03:59:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:37,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:59:37,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:37,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:59:37,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:59:37,556 INFO L87 Difference]: Start difference. First operand 372 states and 560 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:37,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:37,694 INFO L93 Difference]: Finished difference Result 733 states and 1109 transitions. [2024-11-28 03:59:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:59:37,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 146 [2024-11-28 03:59:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:37,703 INFO L225 Difference]: With dead ends: 733 [2024-11-28 03:59:37,703 INFO L226 Difference]: Without dead ends: 374 [2024-11-28 03:59:37,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:59:37,709 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 2 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1867 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 [2024-11-28 03:59:37,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1867 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:59:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-28 03:59:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2024-11-28 03:59:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5244755244755244) internal successors, (436), 291 states have internal predecessors, (436), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2024-11-28 03:59:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 566 transitions. [2024-11-28 03:59:37,754 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 566 transitions. Word has length 146 [2024-11-28 03:59:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:37,755 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 566 transitions. [2024-11-28 03:59:37,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 566 transitions. [2024-11-28 03:59:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:59:37,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:37,764 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] [2024-11-28 03:59:37,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:59:37,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:37,965 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:37,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash -837049532, now seen corresponding path program 1 times [2024-11-28 03:59:37,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:37,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281870658] [2024-11-28 03:59:37,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:37,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:59:38,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:38,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281870658] [2024-11-28 03:59:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281870658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:38,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:38,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:59:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744539389] [2024-11-28 03:59:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:38,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:59:38,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:38,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:59:38,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:59:38,276 INFO L87 Difference]: Start difference. First operand 374 states and 566 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:38,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:38,363 INFO L93 Difference]: Finished difference Result 725 states and 1100 transitions. [2024-11-28 03:59:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:59:38,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2024-11-28 03:59:38,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:38,368 INFO L225 Difference]: With dead ends: 725 [2024-11-28 03:59:38,368 INFO L226 Difference]: Without dead ends: 374 [2024-11-28 03:59:38,370 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 [2024-11-28 03:59:38,371 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 2 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1885 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 [2024-11-28 03:59:38,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1885 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-28 03:59:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2024-11-28 03:59:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5244755244755244) internal successors, (436), 291 states have internal predecessors, (436), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2024-11-28 03:59:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 565 transitions. [2024-11-28 03:59:38,415 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 565 transitions. Word has length 147 [2024-11-28 03:59:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:38,415 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 565 transitions. [2024-11-28 03:59:38,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 565 transitions. [2024-11-28 03:59:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 03:59:38,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:38,424 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] [2024-11-28 03:59:38,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:59:38,425 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:38,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:38,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1236192517, now seen corresponding path program 2 times [2024-11-28 03:59:38,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:38,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699855069] [2024-11-28 03:59:38,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:59:38,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:38,493 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:59:38,493 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:59:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 03:59:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:38,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699855069] [2024-11-28 03:59:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699855069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:38,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:38,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:59:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866047880] [2024-11-28 03:59:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:38,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:59:38,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:38,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:59:38,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:59:38,846 INFO L87 Difference]: Start difference. First operand 374 states and 565 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:39,696 INFO L93 Difference]: Finished difference Result 853 states and 1297 transitions. [2024-11-28 03:59:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:59:39,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2024-11-28 03:59:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:39,704 INFO L225 Difference]: With dead ends: 853 [2024-11-28 03:59:39,704 INFO L226 Difference]: Without dead ends: 682 [2024-11-28 03:59:39,706 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 [2024-11-28 03:59:39,707 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 898 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:39,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 2724 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:59:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-28 03:59:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 638. [2024-11-28 03:59:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 493 states have (on average 1.5598377281947262) internal successors, (769), 499 states have internal predecessors, (769), 104 states have call successors, (104), 39 states have call predecessors, (104), 40 states have return successors, (119), 102 states have call predecessors, (119), 103 states have call successors, (119) [2024-11-28 03:59:39,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 992 transitions. [2024-11-28 03:59:39,814 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 992 transitions. Word has length 148 [2024-11-28 03:59:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:39,815 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 992 transitions. [2024-11-28 03:59:39,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 992 transitions. [2024-11-28 03:59:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-28 03:59:39,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:39,824 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] [2024-11-28 03:59:39,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:59:39,826 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:39,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1984141352, now seen corresponding path program 1 times [2024-11-28 03:59:39,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:39,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364469499] [2024-11-28 03:59:39,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:39,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:59:40,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364469499] [2024-11-28 03:59:40,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364469499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:40,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:40,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:59:40,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29902087] [2024-11-28 03:59:40,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:40,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:59:40,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:40,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:59:40,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:59:40,139 INFO L87 Difference]: Start difference. First operand 638 states and 992 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:40,255 INFO L93 Difference]: Finished difference Result 1245 states and 1944 transitions. [2024-11-28 03:59:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:59:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2024-11-28 03:59:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:40,264 INFO L225 Difference]: With dead ends: 1245 [2024-11-28 03:59:40,266 INFO L226 Difference]: Without dead ends: 642 [2024-11-28 03:59:40,269 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 [2024-11-28 03:59:40,273 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 1 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1888 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 [2024-11-28 03:59:40,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1888 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-28 03:59:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2024-11-28 03:59:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 495 states have (on average 1.5575757575757576) internal successors, (771), 503 states have internal predecessors, (771), 104 states have call successors, (104), 39 states have call predecessors, (104), 42 states have return successors, (122), 102 states have call predecessors, (122), 103 states have call successors, (122) [2024-11-28 03:59:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 997 transitions. [2024-11-28 03:59:40,343 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 997 transitions. Word has length 149 [2024-11-28 03:59:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:40,344 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 997 transitions. [2024-11-28 03:59:40,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 997 transitions. [2024-11-28 03:59:40,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 03:59:40,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:40,351 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] [2024-11-28 03:59:40,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:59:40,351 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:40,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash 393874420, now seen corresponding path program 1 times [2024-11-28 03:59:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:40,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086335909] [2024-11-28 03:59:40,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:40,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:59:40,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:40,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086335909] [2024-11-28 03:59:40,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086335909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:40,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:40,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:59:40,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768613792] [2024-11-28 03:59:40,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:40,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:59:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:40,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:59:40,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:59:40,728 INFO L87 Difference]: Start difference. First operand 642 states and 997 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-28 03:59:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:41,004 INFO L93 Difference]: Finished difference Result 1244 states and 1937 transitions. [2024-11-28 03:59:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:59:41,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 150 [2024-11-28 03:59:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:41,011 INFO L225 Difference]: With dead ends: 1244 [2024-11-28 03:59:41,012 INFO L226 Difference]: Without dead ends: 646 [2024-11-28 03:59:41,015 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 [2024-11-28 03:59:41,015 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 7 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:41,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3226 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:59:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-28 03:59:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 644. [2024-11-28 03:59:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 497 states have (on average 1.5553319919517103) internal successors, (773), 504 states have internal predecessors, (773), 104 states have call successors, (104), 40 states have call predecessors, (104), 42 states have return successors, (120), 102 states have call predecessors, (120), 103 states have call successors, (120) [2024-11-28 03:59:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 997 transitions. [2024-11-28 03:59:41,073 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 997 transitions. Word has length 150 [2024-11-28 03:59:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:41,074 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 997 transitions. [2024-11-28 03:59:41,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-28 03:59:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 997 transitions. [2024-11-28 03:59:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 03:59:41,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:41,081 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] [2024-11-28 03:59:41,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:59:41,081 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:41,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1101872897, now seen corresponding path program 2 times [2024-11-28 03:59:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914189351] [2024-11-28 03:59:41,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:59:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:41,134 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:59:41,134 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:59:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 03:59:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914189351] [2024-11-28 03:59:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914189351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:59:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735761419] [2024-11-28 03:59:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:41,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:59:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:41,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:59:41,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:59:41,440 INFO L87 Difference]: Start difference. First operand 644 states and 997 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:41,702 INFO L93 Difference]: Finished difference Result 865 states and 1311 transitions. [2024-11-28 03:59:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:59:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 151 [2024-11-28 03:59:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:41,711 INFO L225 Difference]: With dead ends: 865 [2024-11-28 03:59:41,711 INFO L226 Difference]: Without dead ends: 692 [2024-11-28 03:59:41,712 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 [2024-11-28 03:59:41,713 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 40 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 4081 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:41,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 4081 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:59:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-28 03:59:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 683. [2024-11-28 03:59:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 521 states have (on average 1.5470249520153552) internal successors, (806), 531 states have internal predecessors, (806), 118 states have call successors, (118), 40 states have call predecessors, (118), 43 states have return successors, (138), 115 states have call predecessors, (138), 117 states have call successors, (138) [2024-11-28 03:59:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1062 transitions. [2024-11-28 03:59:41,777 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1062 transitions. Word has length 151 [2024-11-28 03:59:41,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:41,778 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1062 transitions. [2024-11-28 03:59:41,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:59:41,779 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1062 transitions. [2024-11-28 03:59:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 03:59:41,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:41,785 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] [2024-11-28 03:59:41,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:59:41,785 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:41,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:41,786 INFO L85 PathProgramCache]: Analyzing trace with hash 868450852, now seen corresponding path program 1 times [2024-11-28 03:59:41,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:41,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818157567] [2024-11-28 03:59:41,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:41,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:59:42,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:42,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818157567] [2024-11-28 03:59:42,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818157567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:42,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:42,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:59:42,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357811422] [2024-11-28 03:59:42,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:42,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:59:42,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:42,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:59:42,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:59:42,110 INFO L87 Difference]: Start difference. First operand 683 states and 1062 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-28 03:59:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:42,381 INFO L93 Difference]: Finished difference Result 1335 states and 2086 transitions. [2024-11-28 03:59:42,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:59:42,382 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 152 [2024-11-28 03:59:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:42,389 INFO L225 Difference]: With dead ends: 1335 [2024-11-28 03:59:42,389 INFO L226 Difference]: Without dead ends: 693 [2024-11-28 03:59:42,392 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 [2024-11-28 03:59:42,393 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 5 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:42,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3240 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:59:42,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-28 03:59:42,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2024-11-28 03:59:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 527 states have (on average 1.540796963946869) internal successors, (812), 538 states have internal predecessors, (812), 118 states have call successors, (118), 41 states have call predecessors, (118), 45 states have return successors, (145), 115 states have call predecessors, (145), 117 states have call successors, (145) [2024-11-28 03:59:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1075 transitions. [2024-11-28 03:59:42,458 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1075 transitions. Word has length 152 [2024-11-28 03:59:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:42,459 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1075 transitions. [2024-11-28 03:59:42,459 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, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-28 03:59:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1075 transitions. [2024-11-28 03:59:42,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 03:59:42,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:42,465 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] [2024-11-28 03:59:42,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:59:42,466 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:42,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1766406391, now seen corresponding path program 1 times [2024-11-28 03:59:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:42,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803896938] [2024-11-28 03:59:42,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 03:59:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803896938] [2024-11-28 03:59:42,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803896938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:42,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619961453] [2024-11-28 03:59:42,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:42,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:42,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:42,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:59:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:43,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:59:43,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 03:59:43,327 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:59:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619961453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:43,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:59:43,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-28 03:59:43,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136069987] [2024-11-28 03:59:43,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:43,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:59:43,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:43,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:59:43,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:59:43,334 INFO L87 Difference]: Start difference. First operand 691 states and 1075 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:43,474 INFO L93 Difference]: Finished difference Result 1180 states and 1817 transitions. [2024-11-28 03:59:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:59:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2024-11-28 03:59:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:43,485 INFO L225 Difference]: With dead ends: 1180 [2024-11-28 03:59:43,485 INFO L226 Difference]: Without dead ends: 697 [2024-11-28 03:59:43,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:59:43,490 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 1 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1878 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 [2024-11-28 03:59:43,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1878 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:59:43,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-28 03:59:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2024-11-28 03:59:43,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 528 states have (on average 1.5397727272727273) internal successors, (813), 540 states have internal predecessors, (813), 118 states have call successors, (118), 41 states have call predecessors, (118), 46 states have return successors, (147), 115 states have call predecessors, (147), 117 states have call successors, (147) [2024-11-28 03:59:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1078 transitions. [2024-11-28 03:59:43,594 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1078 transitions. Word has length 154 [2024-11-28 03:59:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:43,595 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1078 transitions. [2024-11-28 03:59:43,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1078 transitions. [2024-11-28 03:59:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 03:59:43,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:43,602 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] [2024-11-28 03:59:43,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:59:43,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:43,807 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:43,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash 53693046, now seen corresponding path program 1 times [2024-11-28 03:59:43,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:43,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725562572] [2024-11-28 03:59:43,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:43,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:59:44,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:44,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725562572] [2024-11-28 03:59:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725562572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288581729] [2024-11-28 03:59:44,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:44,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:44,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:44,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:44,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:59:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:44,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:59:44,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:59:44,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:59:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:59:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288581729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:59:44,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:59:44,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:59:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130481294] [2024-11-28 03:59:44,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:59:44,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:59:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:44,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:59:44,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:59:44,881 INFO L87 Difference]: Start difference. First operand 693 states and 1078 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-28 03:59:45,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:45,181 INFO L93 Difference]: Finished difference Result 1611 states and 2612 transitions. [2024-11-28 03:59:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:59:45,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 153 [2024-11-28 03:59:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:45,195 INFO L225 Difference]: With dead ends: 1611 [2024-11-28 03:59:45,195 INFO L226 Difference]: Without dead ends: 1317 [2024-11-28 03:59:45,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:59:45,201 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 384 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:45,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 2186 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:59:45,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2024-11-28 03:59:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1287. [2024-11-28 03:59:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 994 states have (on average 1.6066398390342052) internal successors, (1597), 1006 states have internal predecessors, (1597), 246 states have call successors, (246), 41 states have call predecessors, (246), 46 states have return successors, (300), 243 states have call predecessors, (300), 245 states have call successors, (300) [2024-11-28 03:59:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 2143 transitions. [2024-11-28 03:59:45,332 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 2143 transitions. Word has length 153 [2024-11-28 03:59:45,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:45,333 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 2143 transitions. [2024-11-28 03:59:45,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-28 03:59:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 2143 transitions. [2024-11-28 03:59:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:59:45,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:45,346 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] [2024-11-28 03:59:45,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:59:45,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:45,548 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:45,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:45,551 INFO L85 PathProgramCache]: Analyzing trace with hash 478729342, now seen corresponding path program 1 times [2024-11-28 03:59:45,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:45,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382545179] [2024-11-28 03:59:45,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:45,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:59:45,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:45,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382545179] [2024-11-28 03:59:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382545179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:45,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:45,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:59:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908309311] [2024-11-28 03:59:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:45,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:45,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:45,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:45,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:59:45,675 INFO L87 Difference]: Start difference. First operand 1287 states and 2143 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:45,805 INFO L93 Difference]: Finished difference Result 3043 states and 5149 transitions. [2024-11-28 03:59:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:45,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2024-11-28 03:59:45,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:45,830 INFO L225 Difference]: With dead ends: 3043 [2024-11-28 03:59:45,830 INFO L226 Difference]: Without dead ends: 1883 [2024-11-28 03:59:45,837 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 [2024-11-28 03:59:45,840 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 97 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 969 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 [2024-11-28 03:59:45,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 969 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2024-11-28 03:59:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1873. [2024-11-28 03:59:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1452 states have (on average 1.6205234159779613) internal successors, (2353), 1464 states have internal predecessors, (2353), 374 states have call successors, (374), 41 states have call predecessors, (374), 46 states have return successors, (453), 371 states have call predecessors, (453), 373 states have call successors, (453) [2024-11-28 03:59:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3180 transitions. [2024-11-28 03:59:46,058 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3180 transitions. Word has length 160 [2024-11-28 03:59:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:46,059 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 3180 transitions. [2024-11-28 03:59:46,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:46,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3180 transitions. [2024-11-28 03:59:46,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 03:59:46,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:46,077 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] [2024-11-28 03:59:46,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:59:46,078 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:46,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:46,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1276360014, now seen corresponding path program 1 times [2024-11-28 03:59:46,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:46,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869104614] [2024-11-28 03:59:46,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:46,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:59:46,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:46,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869104614] [2024-11-28 03:59:46,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869104614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:46,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:46,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:59:46,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140734739] [2024-11-28 03:59:46,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:46,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:46,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:46,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:46,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:59:46,196 INFO L87 Difference]: Start difference. First operand 1873 states and 3180 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:46,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:46,358 INFO L93 Difference]: Finished difference Result 4439 states and 7598 transitions. [2024-11-28 03:59:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:46,359 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2024-11-28 03:59:46,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:46,385 INFO L225 Difference]: With dead ends: 4439 [2024-11-28 03:59:46,385 INFO L226 Difference]: Without dead ends: 2795 [2024-11-28 03:59:46,394 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 [2024-11-28 03:59:46,395 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 95 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 956 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 [2024-11-28 03:59:46,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 956 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2024-11-28 03:59:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2785. [2024-11-28 03:59:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2174 states have (on average 1.6297148114075437) internal successors, (3543), 2186 states have internal predecessors, (3543), 564 states have call successors, (564), 41 states have call predecessors, (564), 46 states have return successors, (659), 561 states have call predecessors, (659), 563 states have call successors, (659) [2024-11-28 03:59:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4766 transitions. [2024-11-28 03:59:46,660 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4766 transitions. Word has length 161 [2024-11-28 03:59:46,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:46,661 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 4766 transitions. [2024-11-28 03:59:46,661 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:46,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4766 transitions. [2024-11-28 03:59:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-28 03:59:46,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:46,693 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] [2024-11-28 03:59:46,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:59:46,694 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:46,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1336241824, now seen corresponding path program 1 times [2024-11-28 03:59:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:46,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055676271] [2024-11-28 03:59:46,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:46,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:59:46,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:46,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055676271] [2024-11-28 03:59:46,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055676271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:46,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:46,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:59:46,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930702013] [2024-11-28 03:59:46,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:46,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:46,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:46,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:46,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:59:46,806 INFO L87 Difference]: Start difference. First operand 2785 states and 4766 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:47,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:47,092 INFO L93 Difference]: Finished difference Result 6477 states and 11190 transitions. [2024-11-28 03:59:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:47,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2024-11-28 03:59:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:47,127 INFO L225 Difference]: With dead ends: 6477 [2024-11-28 03:59:47,127 INFO L226 Difference]: Without dead ends: 4163 [2024-11-28 03:59:47,140 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 [2024-11-28 03:59:47,141 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 93 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 951 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 [2024-11-28 03:59:47,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 951 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2024-11-28 03:59:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 4153. [2024-11-28 03:59:47,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 3296 states have (on average 1.6374393203883495) internal successors, (5397), 3308 states have internal predecessors, (5397), 810 states have call successors, (810), 41 states have call predecessors, (810), 46 states have return successors, (955), 807 states have call predecessors, (955), 809 states have call successors, (955) [2024-11-28 03:59:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 7162 transitions. [2024-11-28 03:59:47,514 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 7162 transitions. Word has length 162 [2024-11-28 03:59:47,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:47,515 INFO L471 AbstractCegarLoop]: Abstraction has 4153 states and 7162 transitions. [2024-11-28 03:59:47,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 7162 transitions. [2024-11-28 03:59:47,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 03:59:47,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:47,553 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] [2024-11-28 03:59:47,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:59:47,554 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:47,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:47,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1976998737, now seen corresponding path program 1 times [2024-11-28 03:59:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:47,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589954717] [2024-11-28 03:59:47,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:59:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:47,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589954717] [2024-11-28 03:59:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589954717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:47,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:47,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:59:47,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571280366] [2024-11-28 03:59:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:47,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:47,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:47,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:47,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:59:47,650 INFO L87 Difference]: Start difference. First operand 4153 states and 7162 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:47,932 INFO L93 Difference]: Finished difference Result 9623 states and 16744 transitions. [2024-11-28 03:59:47,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:47,933 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2024-11-28 03:59:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:47,976 INFO L225 Difference]: With dead ends: 9623 [2024-11-28 03:59:47,977 INFO L226 Difference]: Without dead ends: 6335 [2024-11-28 03:59:47,990 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 [2024-11-28 03:59:47,991 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 91 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 951 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 [2024-11-28 03:59:47,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 951 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2024-11-28 03:59:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 6325. [2024-11-28 03:59:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6325 states, 5110 states have (on average 1.6424657534246576) internal successors, (8393), 5122 states have internal predecessors, (8393), 1168 states have call successors, (1168), 41 states have call predecessors, (1168), 46 states have return successors, (1396), 1165 states have call predecessors, (1396), 1167 states have call successors, (1396) [2024-11-28 03:59:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6325 states to 6325 states and 10957 transitions. [2024-11-28 03:59:48,485 INFO L78 Accepts]: Start accepts. Automaton has 6325 states and 10957 transitions. Word has length 163 [2024-11-28 03:59:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:48,485 INFO L471 AbstractCegarLoop]: Abstraction has 6325 states and 10957 transitions. [2024-11-28 03:59:48,486 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 6325 states and 10957 transitions. [2024-11-28 03:59:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 03:59:48,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:48,561 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, 1, 1, 1, 1, 1] [2024-11-28 03:59:48,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:59:48,561 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:48,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:48,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1547385963, now seen corresponding path program 1 times [2024-11-28 03:59:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:48,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855371118] [2024-11-28 03:59:48,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:48,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:59:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855371118] [2024-11-28 03:59:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855371118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110356892] [2024-11-28 03:59:48,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:48,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:48,781 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:48,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:59:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:49,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:59:49,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:59:49,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:59:49,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110356892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:49,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:59:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 03:59:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548656469] [2024-11-28 03:59:49,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:49,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:49,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:49,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:49,371 INFO L87 Difference]: Start difference. First operand 6325 states and 10957 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:49,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:49,844 INFO L93 Difference]: Finished difference Result 15305 states and 26679 transitions. [2024-11-28 03:59:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:49,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2024-11-28 03:59:49,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:49,913 INFO L225 Difference]: With dead ends: 15305 [2024-11-28 03:59:49,914 INFO L226 Difference]: Without dead ends: 10287 [2024-11-28 03:59:49,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:49,937 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 89 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 977 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 [2024-11-28 03:59:49,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 977 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2024-11-28 03:59:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 10277. [2024-11-28 03:59:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10277 states, 8310 states have (on average 1.6350180505415162) internal successors, (13587), 8322 states have internal predecessors, (13587), 1920 states have call successors, (1920), 41 states have call predecessors, (1920), 46 states have return successors, (2292), 1917 states have call predecessors, (2292), 1919 states have call successors, (2292) [2024-11-28 03:59:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10277 states to 10277 states and 17799 transitions. [2024-11-28 03:59:50,776 INFO L78 Accepts]: Start accepts. Automaton has 10277 states and 17799 transitions. Word has length 166 [2024-11-28 03:59:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:50,777 INFO L471 AbstractCegarLoop]: Abstraction has 10277 states and 17799 transitions. [2024-11-28 03:59:50,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 10277 states and 17799 transitions. [2024-11-28 03:59:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 03:59:50,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:50,852 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] [2024-11-28 03:59:50,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:59:51,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:59:51,053 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:51,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash 584344755, now seen corresponding path program 1 times [2024-11-28 03:59:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:51,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647321658] [2024-11-28 03:59:51,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:59:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647321658] [2024-11-28 03:59:51,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647321658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:51,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:51,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:59:51,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008092869] [2024-11-28 03:59:51,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:51,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:51,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:51,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:51,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:59:51,155 INFO L87 Difference]: Start difference. First operand 10277 states and 17799 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:51,897 INFO L93 Difference]: Finished difference Result 25323 states and 44081 transitions. [2024-11-28 03:59:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:51,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2024-11-28 03:59:51,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:52,031 INFO L225 Difference]: With dead ends: 25323 [2024-11-28 03:59:52,031 INFO L226 Difference]: Without dead ends: 17075 [2024-11-28 03:59:52,075 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 [2024-11-28 03:59:52,076 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 87 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 956 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 [2024-11-28 03:59:52,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 956 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:52,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2024-11-28 03:59:53,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 17065. [2024-11-28 03:59:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17065 states, 13886 states have (on average 1.632363531614576) internal successors, (22667), 13898 states have internal predecessors, (22667), 3132 states have call successors, (3132), 41 states have call predecessors, (3132), 46 states have return successors, (3693), 3129 states have call predecessors, (3693), 3131 states have call successors, (3693) [2024-11-28 03:59:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17065 states to 17065 states and 29492 transitions. [2024-11-28 03:59:53,884 INFO L78 Accepts]: Start accepts. Automaton has 17065 states and 29492 transitions. Word has length 165 [2024-11-28 03:59:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:53,885 INFO L471 AbstractCegarLoop]: Abstraction has 17065 states and 29492 transitions. [2024-11-28 03:59:53,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 17065 states and 29492 transitions. [2024-11-28 03:59:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 03:59:54,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:54,033 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:54,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:59:54,034 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:54,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1519163369, now seen corresponding path program 1 times [2024-11-28 03:59:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283008038] [2024-11-28 03:59:54,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:59:54,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:54,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283008038] [2024-11-28 03:59:54,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283008038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:54,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330503962] [2024-11-28 03:59:54,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:54,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:54,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:54,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:54,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:59:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:54,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:59:54,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:59:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:59:55,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:59:55,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330503962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:55,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:59:55,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 03:59:55,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176310662] [2024-11-28 03:59:55,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:55,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:55,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:55,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:55,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:55,018 INFO L87 Difference]: Start difference. First operand 17065 states and 29492 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:56,251 INFO L93 Difference]: Finished difference Result 44165 states and 76631 transitions. [2024-11-28 03:59:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:56,252 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), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2024-11-28 03:59:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:56,466 INFO L225 Difference]: With dead ends: 44165 [2024-11-28 03:59:56,467 INFO L226 Difference]: Without dead ends: 29929 [2024-11-28 03:59:56,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:59:56,535 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 85 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 975 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 [2024-11-28 03:59:56,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 975 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:59:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29929 states. [2024-11-28 03:59:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29929 to 29919. [2024-11-28 03:59:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29919 states, 24334 states have (on average 1.62188707158708) internal successors, (39467), 24346 states have internal predecessors, (39467), 5538 states have call successors, (5538), 41 states have call predecessors, (5538), 46 states have return successors, (6524), 5535 states have call predecessors, (6524), 5537 states have call successors, (6524) [2024-11-28 03:59:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29919 states to 29919 states and 51529 transitions. [2024-11-28 03:59:58,939 INFO L78 Accepts]: Start accepts. Automaton has 29919 states and 51529 transitions. Word has length 168 [2024-11-28 03:59:58,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:58,939 INFO L471 AbstractCegarLoop]: Abstraction has 29919 states and 51529 transitions. [2024-11-28 03:59:58,939 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), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 03:59:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 29919 states and 51529 transitions. [2024-11-28 03:59:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 03:59:59,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:59,163 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:59,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:59:59,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:59,364 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:59,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2020539099, now seen corresponding path program 1 times [2024-11-28 03:59:59,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:59,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003858823] [2024-11-28 03:59:59,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:59,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:59:59,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:59,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003858823] [2024-11-28 03:59:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003858823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:59:59,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536635792] [2024-11-28 03:59:59,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:59,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:59:59,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:59:59,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:59:59,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:00:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:00,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:00:00,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:00:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:00:00,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:00:00,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536635792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:00,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:00:00,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:00:00,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534405715] [2024-11-28 04:00:00,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:00,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:00:00,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:00,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:00:00,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:00:00,268 INFO L87 Difference]: Start difference. First operand 29919 states and 51529 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:00:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:02,953 INFO L93 Difference]: Finished difference Result 79197 states and 137040 transitions. [2024-11-28 04:00:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:00:02,954 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2024-11-28 04:00:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:03,287 INFO L225 Difference]: With dead ends: 79197 [2024-11-28 04:00:03,287 INFO L226 Difference]: Without dead ends: 53263 [2024-11-28 04:00:03,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:00:03,375 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 83 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 954 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 [2024-11-28 04:00:03,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:00:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53263 states. [2024-11-28 04:00:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53263 to 53253. [2024-11-28 04:00:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53253 states, 43590 states have (on average 1.616815783436568) internal successors, (70477), 43602 states have internal predecessors, (70477), 9616 states have call successors, (9616), 41 states have call predecessors, (9616), 46 states have return successors, (11416), 9613 states have call predecessors, (11416), 9615 states have call successors, (11416) [2024-11-28 04:00:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53253 states to 53253 states and 91509 transitions. [2024-11-28 04:00:06,494 INFO L78 Accepts]: Start accepts. Automaton has 53253 states and 91509 transitions. Word has length 169 [2024-11-28 04:00:06,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:06,495 INFO L471 AbstractCegarLoop]: Abstraction has 53253 states and 91509 transitions. [2024-11-28 04:00:06,495 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:00:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 53253 states and 91509 transitions. [2024-11-28 04:00:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 04:00:06,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:06,719 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] [2024-11-28 04:00:06,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:00:06,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:06,920 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:06,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1964960960, now seen corresponding path program 1 times [2024-11-28 04:00:06,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:06,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128500215] [2024-11-28 04:00:06,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:00:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128500215] [2024-11-28 04:00:07,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128500215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:07,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:07,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:00:07,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522636027] [2024-11-28 04:00:07,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:07,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:00:07,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:07,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:00:07,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:00:07,025 INFO L87 Difference]: Start difference. First operand 53253 states and 91509 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:00:11,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:11,024 INFO L93 Difference]: Finished difference Result 145101 states and 249724 transitions. [2024-11-28 04:00:11,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:00:11,025 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2024-11-28 04:00:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:11,562 INFO L225 Difference]: With dead ends: 145101 [2024-11-28 04:00:11,562 INFO L226 Difference]: Without dead ends: 97223 [2024-11-28 04:00:11,742 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 [2024-11-28 04:00:11,743 INFO L435 NwaCegarLoop]: 490 mSDtfsCounter, 81 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 965 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 [2024-11-28 04:00:11,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 965 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:00:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97223 states. [2024-11-28 04:00:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97223 to 97213. [2024-11-28 04:00:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97213 states, 80120 states have (on average 1.610346979530704) internal successors, (129021), 80132 states have internal predecessors, (129021), 17046 states have call successors, (17046), 41 states have call predecessors, (17046), 46 states have return successors, (19910), 17043 states have call predecessors, (19910), 17045 states have call successors, (19910) [2024-11-28 04:00:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97213 states to 97213 states and 165977 transitions. [2024-11-28 04:00:18,021 INFO L78 Accepts]: Start accepts. Automaton has 97213 states and 165977 transitions. Word has length 168 [2024-11-28 04:00:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:18,022 INFO L471 AbstractCegarLoop]: Abstraction has 97213 states and 165977 transitions. [2024-11-28 04:00:18,022 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:00:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 97213 states and 165977 transitions. [2024-11-28 04:00:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-28 04:00:18,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:18,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:18,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:00:18,375 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:18,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1151454459, now seen corresponding path program 1 times [2024-11-28 04:00:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:18,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139337385] [2024-11-28 04:00:18,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:00:18,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:18,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139337385] [2024-11-28 04:00:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139337385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:00:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360800608] [2024-11-28 04:00:18,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:18,571 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:00:18,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e22bab-070e-4973-a8a5-086adade5ae4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:00:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:19,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:00:19,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:00:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:00:19,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:00:19,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360800608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:19,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:00:19,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:00:19,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589720436] [2024-11-28 04:00:19,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:19,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:00:19,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:19,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:00:19,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:00:19,588 INFO L87 Difference]: Start difference. First operand 97213 states and 165977 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:00:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:24,355 INFO L93 Difference]: Finished difference Result 181029 states and 309801 transitions. [2024-11-28 04:00:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:00:24,356 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 171 [2024-11-28 04:00:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:25,364 INFO L225 Difference]: With dead ends: 181029 [2024-11-28 04:00:25,365 INFO L226 Difference]: Without dead ends: 180735 [2024-11-28 04:00:25,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:00:25,727 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 76 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 968 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 [2024-11-28 04:00:25,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 968 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:00:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180735 states. [2024-11-28 04:00:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180735 to 180725. [2024-11-28 04:00:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180725 states, 150034 states have (on average 1.6024167855286136) internal successors, (240417), 150046 states have internal predecessors, (240417), 30644 states have call successors, (30644), 41 states have call predecessors, (30644), 46 states have return successors, (36123), 30641 states have call predecessors, (36123), 30643 states have call successors, (36123) [2024-11-28 04:00:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180725 states to 180725 states and 307184 transitions. [2024-11-28 04:00:34,588 INFO L78 Accepts]: Start accepts. Automaton has 180725 states and 307184 transitions. Word has length 171 [2024-11-28 04:00:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:34,589 INFO L471 AbstractCegarLoop]: Abstraction has 180725 states and 307184 transitions. [2024-11-28 04:00:34,589 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, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 04:00:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 180725 states and 307184 transitions.