./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e96a4dadf08c19b3d92d901d7f9116f0323f4fb1660ac2537112df0afe321751 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:48:38,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:48:38,720 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:48:38,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:48:38,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:48:38,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:48:38,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:48:38,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:48:38,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:48:38,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:48:38,750 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:48:38,750 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:48:38,750 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:48:38,750 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:48:38,750 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:48:38,751 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:48:38,751 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:48:38,751 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:48:38,751 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:48:38,751 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:48:38,752 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:48:38,752 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:48:38,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:48:38,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:48:38,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:48:38,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:48:38,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:48:38,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:48:38,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:48:38,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:48:38,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:48:38,754 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:48:38,754 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:48:38,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:48:38,754 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:48:38,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:48:38,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:48:38,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:48:38,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:48:38,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:48:38,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:48:38,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:48:38,756 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:48:38,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:48:38,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:48:38,756 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:48:38,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:48:38,756 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> e96a4dadf08c19b3d92d901d7f9116f0323f4fb1660ac2537112df0afe321751 [2024-11-14 04:48:39,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:48:39,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:48:39,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:48:39,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:48:39,125 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:48:39,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/systemc/token_ring.03.cil-1.c Unable to find full path for "g++" [2024-11-14 04:48:41,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:48:41,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:48:41,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/sv-benchmarks/c/systemc/token_ring.03.cil-1.c [2024-11-14 04:48:41,420 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/data/9983d5066/13c5a2f883d84cc69e448d88d35e5019/FLAGe668db649 [2024-11-14 04:48:41,444 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/data/9983d5066/13c5a2f883d84cc69e448d88d35e5019 [2024-11-14 04:48:41,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:48:41,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:48:41,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:48:41,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:48:41,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:48:41,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:41,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ada1f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41, skipping insertion in model container [2024-11-14 04:48:41,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:41,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:48:41,713 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_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/sv-benchmarks/c/systemc/token_ring.03.cil-1.c[671,684] [2024-11-14 04:48:41,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:48:41,874 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:48:41,890 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_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/sv-benchmarks/c/systemc/token_ring.03.cil-1.c[671,684] [2024-11-14 04:48:41,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:48:41,975 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:48:41,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41 WrapperNode [2024-11-14 04:48:41,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:48:41,977 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:48:41,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:48:41,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:48:41,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,037 INFO L138 Inliner]: procedures = 34, calls = 41, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 339 [2024-11-14 04:48:42,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:48:42,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:48:42,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:48:42,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:48:42,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,071 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:48:42,072 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:48:42,072 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:48:42,072 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:48:42,073 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (1/1) ... [2024-11-14 04:48:42,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:48:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:42,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:48:42,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:48:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:48:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-14 04:48:42,160 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-14 04:48:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-14 04:48:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-14 04:48:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-14 04:48:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-14 04:48:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-14 04:48:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-14 04:48:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-14 04:48:42,162 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-14 04:48:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-14 04:48:42,162 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-14 04:48:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:48:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-14 04:48:42,162 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-14 04:48:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:48:42,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:48:42,305 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:48:42,308 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:48:43,028 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-14 04:48:43,028 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:48:43,352 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:48:43,353 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 04:48:43,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:48:43 BoogieIcfgContainer [2024-11-14 04:48:43,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:48:43,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:48:43,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:48:43,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:48:43,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:48:41" (1/3) ... [2024-11-14 04:48:43,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa78d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:48:43, skipping insertion in model container [2024-11-14 04:48:43,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:48:41" (2/3) ... [2024-11-14 04:48:43,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa78d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:48:43, skipping insertion in model container [2024-11-14 04:48:43,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:48:43" (3/3) ... [2024-11-14 04:48:43,371 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-1.c [2024-11-14 04:48:43,388 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:48:43,389 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.03.cil-1.c that has 8 procedures, 99 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-14 04:48:43,457 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:48:43,474 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=FINITE_AUTOMATA, 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;@149dc88b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:48:43,475 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:48:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 75 states have internal predecessors, (106), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-14 04:48:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 04:48:43,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:43,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:43,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:43,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1332481433, now seen corresponding path program 1 times [2024-11-14 04:48:43,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:43,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870029481] [2024-11-14 04:48:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:43,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:48:44,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:44,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870029481] [2024-11-14 04:48:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870029481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:48:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:48:44,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266726678] [2024-11-14 04:48:44,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:44,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:48:44,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:48:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:48:44,094 INFO L87 Difference]: Start difference. First operand has 99 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 75 states have internal predecessors, (106), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:48:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:44,614 INFO L93 Difference]: Finished difference Result 273 states and 410 transitions. [2024-11-14 04:48:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:48:44,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-14 04:48:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:44,631 INFO L225 Difference]: With dead ends: 273 [2024-11-14 04:48:44,632 INFO L226 Difference]: Without dead ends: 175 [2024-11-14 04:48:44,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:48:44,643 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 227 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:44,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 334 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:48:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-14 04:48:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2024-11-14 04:48:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 129 states have (on average 1.37984496124031) internal successors, (178), 132 states have internal predecessors, (178), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 04:48:44,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 240 transitions. [2024-11-14 04:48:44,738 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 240 transitions. Word has length 40 [2024-11-14 04:48:44,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:44,738 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 240 transitions. [2024-11-14 04:48:44,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:48:44,739 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 240 transitions. [2024-11-14 04:48:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 04:48:44,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:44,744 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:44,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:48:44,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:44,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:44,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1303795290, now seen corresponding path program 1 times [2024-11-14 04:48:44,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:44,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053051539] [2024-11-14 04:48:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:44,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 04:48:45,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053051539] [2024-11-14 04:48:45,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053051539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057595925] [2024-11-14 04:48:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:45,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:45,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:45,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:45,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:48:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:45,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:48:45,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 04:48:45,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:45,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057595925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:45,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:45,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-14 04:48:45,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683061683] [2024-11-14 04:48:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:45,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:48:45,435 INFO L87 Difference]: Start difference. First operand 174 states and 240 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:48:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:45,630 INFO L93 Difference]: Finished difference Result 505 states and 705 transitions. [2024-11-14 04:48:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:45,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2024-11-14 04:48:45,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:45,637 INFO L225 Difference]: With dead ends: 505 [2024-11-14 04:48:45,642 INFO L226 Difference]: Without dead ends: 336 [2024-11-14 04:48:45,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:48:45,648 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 111 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:45,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 253 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:48:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-14 04:48:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 330. [2024-11-14 04:48:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 249 states have (on average 1.3694779116465863) internal successors, (341), 253 states have internal predecessors, (341), 56 states have call successors, (56), 25 states have call predecessors, (56), 24 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-14 04:48:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 451 transitions. [2024-11-14 04:48:45,747 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 451 transitions. Word has length 74 [2024-11-14 04:48:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:45,747 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 451 transitions. [2024-11-14 04:48:45,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:48:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 451 transitions. [2024-11-14 04:48:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 04:48:45,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:45,752 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:45,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:48:45,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:45,953 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:45,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1541085604, now seen corresponding path program 1 times [2024-11-14 04:48:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:45,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250233478] [2024-11-14 04:48:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 04:48:46,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:46,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250233478] [2024-11-14 04:48:46,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250233478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:46,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337451596] [2024-11-14 04:48:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:46,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:46,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:46,164 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:46,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:48:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:46,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:48:46,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 04:48:46,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:46,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337451596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:46,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:46,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-14 04:48:46,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942868150] [2024-11-14 04:48:46,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:46,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:46,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:46,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:48:46,390 INFO L87 Difference]: Start difference. First operand 330 states and 451 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:48:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:46,561 INFO L93 Difference]: Finished difference Result 967 states and 1338 transitions. [2024-11-14 04:48:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2024-11-14 04:48:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:46,568 INFO L225 Difference]: With dead ends: 967 [2024-11-14 04:48:46,569 INFO L226 Difference]: Without dead ends: 642 [2024-11-14 04:48:46,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:48:46,571 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 108 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:46,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 211 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:48:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-14 04:48:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 634. [2024-11-14 04:48:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 483 states have (on average 1.3561076604554865) internal successors, (655), 489 states have internal predecessors, (655), 102 states have call successors, (102), 49 states have call predecessors, (102), 48 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-14 04:48:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 857 transitions. [2024-11-14 04:48:46,694 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 857 transitions. Word has length 74 [2024-11-14 04:48:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:46,694 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 857 transitions. [2024-11-14 04:48:46,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-14 04:48:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 857 transitions. [2024-11-14 04:48:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 04:48:46,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:46,700 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:46,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 04:48:46,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:46,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:46,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1624647066, now seen corresponding path program 1 times [2024-11-14 04:48:46,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:46,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727937499] [2024-11-14 04:48:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:46,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:48:47,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727937499] [2024-11-14 04:48:47,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727937499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:47,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:48:47,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:48:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324687553] [2024-11-14 04:48:47,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:47,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:48:47,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:48:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:48:47,513 INFO L87 Difference]: Start difference. First operand 634 states and 857 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-14 04:48:48,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:48,138 INFO L93 Difference]: Finished difference Result 1938 states and 2615 transitions. [2024-11-14 04:48:48,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:48:48,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 74 [2024-11-14 04:48:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:48,157 INFO L225 Difference]: With dead ends: 1938 [2024-11-14 04:48:48,158 INFO L226 Difference]: Without dead ends: 1310 [2024-11-14 04:48:48,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:48:48,162 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 311 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:48,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 302 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:48:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2024-11-14 04:48:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1210. [2024-11-14 04:48:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 923 states have (on average 1.3380281690140845) internal successors, (1235), 933 states have internal predecessors, (1235), 190 states have call successors, (190), 97 states have call predecessors, (190), 96 states have return successors, (188), 180 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-14 04:48:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1613 transitions. [2024-11-14 04:48:48,391 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1613 transitions. Word has length 74 [2024-11-14 04:48:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:48,393 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1613 transitions. [2024-11-14 04:48:48,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-14 04:48:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1613 transitions. [2024-11-14 04:48:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-14 04:48:48,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:48,402 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:48,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:48:48,402 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:48,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1194768411, now seen corresponding path program 1 times [2024-11-14 04:48:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:48,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693535325] [2024-11-14 04:48:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:48,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:48:48,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:48,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693535325] [2024-11-14 04:48:48,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693535325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:48,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322049022] [2024-11-14 04:48:48,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:48,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:48,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:48,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:48,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:48:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:48,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:48:48,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 04:48:49,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:49,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322049022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:49,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:49,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:48:49,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518578388] [2024-11-14 04:48:49,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:49,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:49,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:49,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:49,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:49,058 INFO L87 Difference]: Start difference. First operand 1210 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 04:48:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:49,291 INFO L93 Difference]: Finished difference Result 2161 states and 2906 transitions. [2024-11-14 04:48:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2024-11-14 04:48:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:49,338 INFO L225 Difference]: With dead ends: 2161 [2024-11-14 04:48:49,339 INFO L226 Difference]: Without dead ends: 1525 [2024-11-14 04:48:49,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:49,343 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 47 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:49,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 276 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:48:49,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2024-11-14 04:48:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1394. [2024-11-14 04:48:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1091 states have (on average 1.3593033913840513) internal successors, (1483), 1101 states have internal predecessors, (1483), 198 states have call successors, (198), 105 states have call predecessors, (198), 104 states have return successors, (196), 188 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-14 04:48:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1877 transitions. [2024-11-14 04:48:49,516 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1877 transitions. Word has length 88 [2024-11-14 04:48:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:49,518 INFO L471 AbstractCegarLoop]: Abstraction has 1394 states and 1877 transitions. [2024-11-14 04:48:49,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 04:48:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1877 transitions. [2024-11-14 04:48:49,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-14 04:48:49,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:49,531 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-14 04:48:49,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 04:48:49,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:49,732 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:49,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1018957346, now seen corresponding path program 1 times [2024-11-14 04:48:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:49,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600559891] [2024-11-14 04:48:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:49,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-14 04:48:49,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:49,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600559891] [2024-11-14 04:48:49,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600559891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:49,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:48:49,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:48:49,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072890007] [2024-11-14 04:48:49,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:49,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:49,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:49,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:48:49,846 INFO L87 Difference]: Start difference. First operand 1394 states and 1877 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 04:48:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:50,156 INFO L93 Difference]: Finished difference Result 3475 states and 4706 transitions. [2024-11-14 04:48:50,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:50,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 98 [2024-11-14 04:48:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:50,174 INFO L225 Difference]: With dead ends: 3475 [2024-11-14 04:48:50,174 INFO L226 Difference]: Without dead ends: 2086 [2024-11-14 04:48:50,180 INFO L431 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 [2024-11-14 04:48:50,181 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 103 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:50,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 251 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:48:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2024-11-14 04:48:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2070. [2024-11-14 04:48:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1623 states have (on average 1.3450400492914356) internal successors, (2183), 1637 states have internal predecessors, (2183), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2024-11-14 04:48:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2761 transitions. [2024-11-14 04:48:50,425 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2761 transitions. Word has length 98 [2024-11-14 04:48:50,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:50,426 INFO L471 AbstractCegarLoop]: Abstraction has 2070 states and 2761 transitions. [2024-11-14 04:48:50,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 04:48:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2761 transitions. [2024-11-14 04:48:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-14 04:48:50,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:50,441 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:48:50,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:48:50,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:50,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:50,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1310371489, now seen corresponding path program 1 times [2024-11-14 04:48:50,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:50,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447848438] [2024-11-14 04:48:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:50,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-14 04:48:50,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447848438] [2024-11-14 04:48:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447848438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129897257] [2024-11-14 04:48:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:50,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:50,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:50,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:48:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:50,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:48:50,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 04:48:51,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:51,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129897257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:51,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:51,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:48:51,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042925692] [2024-11-14 04:48:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:51,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:51,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:51,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:51,055 INFO L87 Difference]: Start difference. First operand 2070 states and 2761 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:48:51,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:51,294 INFO L93 Difference]: Finished difference Result 3470 states and 4727 transitions. [2024-11-14 04:48:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2024-11-14 04:48:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:51,311 INFO L225 Difference]: With dead ends: 3470 [2024-11-14 04:48:51,311 INFO L226 Difference]: Without dead ends: 2082 [2024-11-14 04:48:51,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:51,317 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 102 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:51,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 271 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:48:51,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2024-11-14 04:48:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2062. [2024-11-14 04:48:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1615 states have (on average 1.3219814241486068) internal successors, (2135), 1629 states have internal predecessors, (2135), 290 states have call successors, (290), 157 states have call predecessors, (290), 156 states have return successors, (288), 276 states have call predecessors, (288), 288 states have call successors, (288) [2024-11-14 04:48:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 2713 transitions. [2024-11-14 04:48:51,518 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 2713 transitions. Word has length 112 [2024-11-14 04:48:51,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:51,519 INFO L471 AbstractCegarLoop]: Abstraction has 2062 states and 2713 transitions. [2024-11-14 04:48:51,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:48:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 2713 transitions. [2024-11-14 04:48:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-14 04:48:51,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:51,532 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:48:51,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:48:51,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 04:48:51,739 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:51,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:51,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1819322943, now seen corresponding path program 1 times [2024-11-14 04:48:51,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:51,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773539451] [2024-11-14 04:48:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:51,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-14 04:48:52,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773539451] [2024-11-14 04:48:52,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773539451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732135474] [2024-11-14 04:48:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:52,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:52,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:52,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:52,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:48:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:52,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:48:52,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 04:48:52,262 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:52,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732135474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:52,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:52,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:48:52,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225799247] [2024-11-14 04:48:52,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:52,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:52,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:52,265 INFO L87 Difference]: Start difference. First operand 2062 states and 2713 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 04:48:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:52,519 INFO L93 Difference]: Finished difference Result 3882 states and 5094 transitions. [2024-11-14 04:48:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 112 [2024-11-14 04:48:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:52,539 INFO L225 Difference]: With dead ends: 3882 [2024-11-14 04:48:52,539 INFO L226 Difference]: Without dead ends: 2510 [2024-11-14 04:48:52,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:52,544 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 112 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:52,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 147 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:48:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2024-11-14 04:48:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2510. [2024-11-14 04:48:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 1999 states have (on average 1.2901450725362682) internal successors, (2579), 2013 states have internal predecessors, (2579), 310 states have call successors, (310), 201 states have call predecessors, (310), 200 states have return successors, (308), 296 states have call predecessors, (308), 308 states have call successors, (308) [2024-11-14 04:48:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3197 transitions. [2024-11-14 04:48:52,830 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3197 transitions. Word has length 112 [2024-11-14 04:48:52,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:52,831 INFO L471 AbstractCegarLoop]: Abstraction has 2510 states and 3197 transitions. [2024-11-14 04:48:52,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 04:48:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3197 transitions. [2024-11-14 04:48:52,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-14 04:48:52,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:52,840 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:48:52,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:48:53,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 04:48:53,041 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:53,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash 916601474, now seen corresponding path program 1 times [2024-11-14 04:48:53,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:53,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143067107] [2024-11-14 04:48:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-14 04:48:53,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143067107] [2024-11-14 04:48:53,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143067107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417229283] [2024-11-14 04:48:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:53,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:53,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:53,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:48:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:53,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:48:53,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:48:53,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417229283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:53,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:53,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:48:53,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74789043] [2024-11-14 04:48:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:53,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:53,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:53,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:53,529 INFO L87 Difference]: Start difference. First operand 2510 states and 3197 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 04:48:53,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:53,875 INFO L93 Difference]: Finished difference Result 5918 states and 7616 transitions. [2024-11-14 04:48:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:53,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 113 [2024-11-14 04:48:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:53,900 INFO L225 Difference]: With dead ends: 5918 [2024-11-14 04:48:53,900 INFO L226 Difference]: Without dead ends: 3414 [2024-11-14 04:48:53,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:53,907 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 60 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:53,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 220 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:48:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2024-11-14 04:48:54,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 2774. [2024-11-14 04:48:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2235 states have (on average 1.3078299776286353) internal successors, (2923), 2250 states have internal predecessors, (2923), 324 states have call successors, (324), 215 states have call predecessors, (324), 214 states have return successors, (322), 309 states have call predecessors, (322), 322 states have call successors, (322) [2024-11-14 04:48:54,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3569 transitions. [2024-11-14 04:48:54,159 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3569 transitions. Word has length 113 [2024-11-14 04:48:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:54,160 INFO L471 AbstractCegarLoop]: Abstraction has 2774 states and 3569 transitions. [2024-11-14 04:48:54,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 04:48:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3569 transitions. [2024-11-14 04:48:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-14 04:48:54,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:54,170 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:48:54,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 04:48:54,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:54,372 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:54,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash -173369503, now seen corresponding path program 1 times [2024-11-14 04:48:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116682808] [2024-11-14 04:48:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 04:48:54,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:54,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116682808] [2024-11-14 04:48:54,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116682808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:54,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074571942] [2024-11-14 04:48:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:54,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:54,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:54,751 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:54,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:48:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:54,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:48:54,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 04:48:54,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:54,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074571942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:54,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:48:54,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380636120] [2024-11-14 04:48:54,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:54,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:48:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:48:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:54,988 INFO L87 Difference]: Start difference. First operand 2774 states and 3569 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:48:55,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:55,369 INFO L93 Difference]: Finished difference Result 5210 states and 6769 transitions. [2024-11-14 04:48:55,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:48:55,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 113 [2024-11-14 04:48:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:55,398 INFO L225 Difference]: With dead ends: 5210 [2024-11-14 04:48:55,398 INFO L226 Difference]: Without dead ends: 3372 [2024-11-14 04:48:55,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:48:55,407 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 63 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:55,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 276 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:48:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2024-11-14 04:48:55,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3094. [2024-11-14 04:48:55,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2523 states have (on average 1.3297661514070551) internal successors, (3355), 2538 states have internal predecessors, (3355), 340 states have call successors, (340), 231 states have call predecessors, (340), 230 states have return successors, (338), 325 states have call predecessors, (338), 338 states have call successors, (338) [2024-11-14 04:48:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4033 transitions. [2024-11-14 04:48:55,727 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4033 transitions. Word has length 113 [2024-11-14 04:48:55,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:55,728 INFO L471 AbstractCegarLoop]: Abstraction has 3094 states and 4033 transitions. [2024-11-14 04:48:55,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:48:55,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4033 transitions. [2024-11-14 04:48:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-14 04:48:55,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:55,739 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:48:55,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 04:48:55,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:55,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:55,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash -224701526, now seen corresponding path program 1 times [2024-11-14 04:48:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102036350] [2024-11-14 04:48:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:55,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 04:48:56,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:56,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102036350] [2024-11-14 04:48:56,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102036350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:56,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227761980] [2024-11-14 04:48:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:56,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:56,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:56,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:56,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:48:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:56,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:48:56,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:48:56,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:56,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227761980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:56,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:56,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-14 04:48:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023384131] [2024-11-14 04:48:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:56,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:48:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:48:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:48:56,585 INFO L87 Difference]: Start difference. First operand 3094 states and 4033 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 04:48:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:57,157 INFO L93 Difference]: Finished difference Result 6028 states and 7933 transitions. [2024-11-14 04:48:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:48:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 115 [2024-11-14 04:48:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:57,188 INFO L225 Difference]: With dead ends: 6028 [2024-11-14 04:48:57,188 INFO L226 Difference]: Without dead ends: 4426 [2024-11-14 04:48:57,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:48:57,195 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 160 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:57,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 311 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:48:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2024-11-14 04:48:57,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4247. [2024-11-14 04:48:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 3549 states have (on average 1.320371935756551) internal successors, (4686), 3564 states have internal predecessors, (4686), 392 states have call successors, (392), 306 states have call predecessors, (392), 305 states have return successors, (412), 377 states have call predecessors, (412), 390 states have call successors, (412) [2024-11-14 04:48:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5490 transitions. [2024-11-14 04:48:57,622 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5490 transitions. Word has length 115 [2024-11-14 04:48:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:57,623 INFO L471 AbstractCegarLoop]: Abstraction has 4247 states and 5490 transitions. [2024-11-14 04:48:57,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 04:48:57,623 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5490 transitions. [2024-11-14 04:48:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-14 04:48:57,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:57,634 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:48:57,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 04:48:57,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:57,835 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:48:57,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:48:57,835 INFO L85 PathProgramCache]: Analyzing trace with hash -386390860, now seen corresponding path program 1 times [2024-11-14 04:48:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:48:57,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913697294] [2024-11-14 04:48:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:57,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:48:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-14 04:48:58,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:48:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913697294] [2024-11-14 04:48:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913697294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:48:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468651928] [2024-11-14 04:48:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:48:58,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:48:58,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:48:58,040 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:48:58,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:48:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:48:58,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:48:58,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:48:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 04:48:58,397 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:48:58,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468651928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:48:58,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:48:58,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-14 04:48:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869398257] [2024-11-14 04:48:58,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:48:58,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:48:58,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:48:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:48:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:48:58,399 INFO L87 Difference]: Start difference. First operand 4247 states and 5490 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 04:48:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:48:59,377 INFO L93 Difference]: Finished difference Result 7873 states and 10221 transitions. [2024-11-14 04:48:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:48:59,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2024-11-14 04:48:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:48:59,418 INFO L225 Difference]: With dead ends: 7873 [2024-11-14 04:48:59,421 INFO L226 Difference]: Without dead ends: 5320 [2024-11-14 04:48:59,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:48:59,431 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 87 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:48:59,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 400 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:48:59,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5320 states. [2024-11-14 04:48:59,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5320 to 5025. [2024-11-14 04:48:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 4117 states have (on average 1.300461501093029) internal successors, (5354), 4132 states have internal predecessors, (5354), 524 states have call successors, (524), 398 states have call predecessors, (524), 383 states have return successors, (570), 495 states have call predecessors, (570), 522 states have call successors, (570) [2024-11-14 04:48:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6448 transitions. [2024-11-14 04:48:59,884 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6448 transitions. Word has length 116 [2024-11-14 04:48:59,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:48:59,885 INFO L471 AbstractCegarLoop]: Abstraction has 5025 states and 6448 transitions. [2024-11-14 04:48:59,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 04:48:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6448 transitions. [2024-11-14 04:48:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-14 04:48:59,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:48:59,898 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:48:59,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 04:49:00,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 04:49:00,102 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:00,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2011052037, now seen corresponding path program 1 times [2024-11-14 04:49:00,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:00,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172236041] [2024-11-14 04:49:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:00,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:49:00,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172236041] [2024-11-14 04:49:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172236041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201307552] [2024-11-14 04:49:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:00,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:00,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:00,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:00,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 04:49:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:00,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:49:00,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:00,774 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 04:49:00,774 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:00,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201307552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:00,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:00,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-14 04:49:00,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617825599] [2024-11-14 04:49:00,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:00,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:49:00,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:00,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:49:00,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:49:00,781 INFO L87 Difference]: Start difference. First operand 5025 states and 6448 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-14 04:49:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:01,476 INFO L93 Difference]: Finished difference Result 8531 states and 11032 transitions. [2024-11-14 04:49:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:49:01,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2024-11-14 04:49:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:01,517 INFO L225 Difference]: With dead ends: 8531 [2024-11-14 04:49:01,517 INFO L226 Difference]: Without dead ends: 5200 [2024-11-14 04:49:01,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:49:01,526 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 82 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:01,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 876 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:49:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2024-11-14 04:49:01,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 4962. [2024-11-14 04:49:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4962 states, 4077 states have (on average 1.3070885454991414) internal successors, (5329), 4091 states have internal predecessors, (5329), 510 states have call successors, (510), 388 states have call predecessors, (510), 374 states have return successors, (554), 483 states have call predecessors, (554), 508 states have call successors, (554) [2024-11-14 04:49:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 6393 transitions. [2024-11-14 04:49:01,984 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 6393 transitions. Word has length 120 [2024-11-14 04:49:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:01,984 INFO L471 AbstractCegarLoop]: Abstraction has 4962 states and 6393 transitions. [2024-11-14 04:49:01,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-14 04:49:01,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 6393 transitions. [2024-11-14 04:49:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-14 04:49:01,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:01,999 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:02,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 04:49:02,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 04:49:02,201 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:02,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -59411891, now seen corresponding path program 1 times [2024-11-14 04:49:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954168560] [2024-11-14 04:49:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:02,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 04:49:02,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954168560] [2024-11-14 04:49:02,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954168560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639222495] [2024-11-14 04:49:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:02,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:02,625 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:02,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 04:49:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:02,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:49:02,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 04:49:02,853 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:02,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639222495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:02,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:02,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:49:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931641354] [2024-11-14 04:49:02,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:02,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:49:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:49:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:49:02,856 INFO L87 Difference]: Start difference. First operand 4962 states and 6393 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:49:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:03,424 INFO L93 Difference]: Finished difference Result 9560 states and 12438 transitions. [2024-11-14 04:49:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:49:03,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 116 [2024-11-14 04:49:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:03,463 INFO L225 Difference]: With dead ends: 9560 [2024-11-14 04:49:03,463 INFO L226 Difference]: Without dead ends: 6895 [2024-11-14 04:49:03,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:49:03,473 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 73 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:03,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 291 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:49:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2024-11-14 04:49:04,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 5853. [2024-11-14 04:49:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 4866 states have (on average 1.3166872174270448) internal successors, (6407), 4880 states have internal predecessors, (6407), 561 states have call successors, (561), 439 states have call predecessors, (561), 425 states have return successors, (605), 534 states have call predecessors, (605), 559 states have call successors, (605) [2024-11-14 04:49:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 7573 transitions. [2024-11-14 04:49:04,081 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 7573 transitions. Word has length 116 [2024-11-14 04:49:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:04,082 INFO L471 AbstractCegarLoop]: Abstraction has 5853 states and 7573 transitions. [2024-11-14 04:49:04,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:49:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 7573 transitions. [2024-11-14 04:49:04,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-14 04:49:04,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:04,093 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:04,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 04:49:04,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 04:49:04,297 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:04,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash 995649060, now seen corresponding path program 1 times [2024-11-14 04:49:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:04,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068850727] [2024-11-14 04:49:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-14 04:49:04,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:04,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068850727] [2024-11-14 04:49:04,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068850727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:04,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843349818] [2024-11-14 04:49:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:04,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:04,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:04,505 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:04,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 04:49:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:04,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:49:04,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 04:49:04,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:04,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843349818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:04,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:04,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-14 04:49:04,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489105318] [2024-11-14 04:49:04,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:04,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:49:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:49:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:49:04,958 INFO L87 Difference]: Start difference. First operand 5853 states and 7573 transitions. Second operand has 6 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 04:49:05,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:05,977 INFO L93 Difference]: Finished difference Result 9893 states and 12918 transitions. [2024-11-14 04:49:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:49:05,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 118 [2024-11-14 04:49:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:06,008 INFO L225 Difference]: With dead ends: 9893 [2024-11-14 04:49:06,008 INFO L226 Difference]: Without dead ends: 6331 [2024-11-14 04:49:06,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:49:06,018 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 153 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:06,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 179 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:49:06,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6331 states. [2024-11-14 04:49:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6331 to 6223. [2024-11-14 04:49:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6223 states, 5196 states have (on average 1.2996535796766744) internal successors, (6753), 5210 states have internal predecessors, (6753), 569 states have call successors, (569), 467 states have call predecessors, (569), 457 states have return successors, (613), 546 states have call predecessors, (613), 567 states have call successors, (613) [2024-11-14 04:49:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 7935 transitions. [2024-11-14 04:49:06,730 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 7935 transitions. Word has length 118 [2024-11-14 04:49:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:06,731 INFO L471 AbstractCegarLoop]: Abstraction has 6223 states and 7935 transitions. [2024-11-14 04:49:06,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-14 04:49:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 7935 transitions. [2024-11-14 04:49:06,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-14 04:49:06,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:06,746 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:49:06,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-14 04:49:06,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 04:49:06,947 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:06,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1218578812, now seen corresponding path program 1 times [2024-11-14 04:49:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:06,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487437530] [2024-11-14 04:49:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-14 04:49:07,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487437530] [2024-11-14 04:49:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487437530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:07,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600122997] [2024-11-14 04:49:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:07,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:07,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:07,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:07,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 04:49:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:07,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:49:07,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 04:49:07,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:07,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600122997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:07,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:07,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-14 04:49:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875205747] [2024-11-14 04:49:07,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:07,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:49:07,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:49:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:49:07,461 INFO L87 Difference]: Start difference. First operand 6223 states and 7935 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:49:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:08,301 INFO L93 Difference]: Finished difference Result 9997 states and 12983 transitions. [2024-11-14 04:49:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:49:08,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2024-11-14 04:49:08,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:08,332 INFO L225 Difference]: With dead ends: 9997 [2024-11-14 04:49:08,332 INFO L226 Difference]: Without dead ends: 6241 [2024-11-14 04:49:08,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:49:08,343 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 97 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:08,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 298 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:49:08,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2024-11-14 04:49:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6155. [2024-11-14 04:49:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6155 states, 5128 states have (on average 1.2728159126365055) internal successors, (6527), 5142 states have internal predecessors, (6527), 569 states have call successors, (569), 467 states have call predecessors, (569), 457 states have return successors, (613), 546 states have call predecessors, (613), 567 states have call successors, (613) [2024-11-14 04:49:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6155 states to 6155 states and 7709 transitions. [2024-11-14 04:49:08,980 INFO L78 Accepts]: Start accepts. Automaton has 6155 states and 7709 transitions. Word has length 118 [2024-11-14 04:49:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:08,980 INFO L471 AbstractCegarLoop]: Abstraction has 6155 states and 7709 transitions. [2024-11-14 04:49:08,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:49:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6155 states and 7709 transitions. [2024-11-14 04:49:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-14 04:49:08,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:08,992 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:09,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 04:49:09,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 04:49:09,193 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:09,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash 250320945, now seen corresponding path program 1 times [2024-11-14 04:49:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:09,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134291253] [2024-11-14 04:49:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:49:09,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134291253] [2024-11-14 04:49:09,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134291253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384349602] [2024-11-14 04:49:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:09,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:09,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:09,520 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:09,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 04:49:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:09,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 04:49:09,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 04:49:10,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:10,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384349602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:10,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-14 04:49:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464292657] [2024-11-14 04:49:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:10,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:49:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:49:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:49:10,122 INFO L87 Difference]: Start difference. First operand 6155 states and 7709 transitions. Second operand has 9 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-14 04:49:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:11,661 INFO L93 Difference]: Finished difference Result 11458 states and 14296 transitions. [2024-11-14 04:49:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:49:11,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2024-11-14 04:49:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:11,695 INFO L225 Difference]: With dead ends: 11458 [2024-11-14 04:49:11,696 INFO L226 Difference]: Without dead ends: 7417 [2024-11-14 04:49:11,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:49:11,707 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 455 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:11,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 330 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:49:11,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7417 states. [2024-11-14 04:49:12,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7417 to 5618. [2024-11-14 04:49:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 4695 states have (on average 1.260702875399361) internal successors, (5919), 4721 states have internal predecessors, (5919), 500 states have call successors, (500), 411 states have call predecessors, (500), 422 states have return successors, (522), 486 states have call predecessors, (522), 498 states have call successors, (522) [2024-11-14 04:49:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 6941 transitions. [2024-11-14 04:49:12,321 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 6941 transitions. Word has length 123 [2024-11-14 04:49:12,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:12,321 INFO L471 AbstractCegarLoop]: Abstraction has 5618 states and 6941 transitions. [2024-11-14 04:49:12,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-14 04:49:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 6941 transitions. [2024-11-14 04:49:12,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-14 04:49:12,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:12,332 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:12,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 04:49:12,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 04:49:12,538 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:12,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash -681425890, now seen corresponding path program 1 times [2024-11-14 04:49:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:12,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121861828] [2024-11-14 04:49:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:12,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-14 04:49:12,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121861828] [2024-11-14 04:49:12,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121861828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931714749] [2024-11-14 04:49:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:12,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:12,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:12,725 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:12,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 04:49:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:12,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:49:12,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:49:12,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:12,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931714749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:12,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:12,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-14 04:49:12,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992883052] [2024-11-14 04:49:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:12,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:49:12,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:12,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:49:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:49:12,984 INFO L87 Difference]: Start difference. First operand 5618 states and 6941 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-14 04:49:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:13,971 INFO L93 Difference]: Finished difference Result 9910 states and 12277 transitions. [2024-11-14 04:49:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:49:13,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 120 [2024-11-14 04:49:13,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:13,999 INFO L225 Difference]: With dead ends: 9910 [2024-11-14 04:49:13,999 INFO L226 Difference]: Without dead ends: 6190 [2024-11-14 04:49:14,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:49:14,010 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 98 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:14,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 479 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:49:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6190 states. [2024-11-14 04:49:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6190 to 5628. [2024-11-14 04:49:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5628 states, 4639 states have (on average 1.2459581806423798) internal successors, (5780), 4676 states have internal predecessors, (5780), 531 states have call successors, (531), 428 states have call predecessors, (531), 457 states have return successors, (589), 524 states have call predecessors, (589), 529 states have call successors, (589) [2024-11-14 04:49:14,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 6900 transitions. [2024-11-14 04:49:14,993 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 6900 transitions. Word has length 120 [2024-11-14 04:49:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:14,993 INFO L471 AbstractCegarLoop]: Abstraction has 5628 states and 6900 transitions. [2024-11-14 04:49:14,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-14 04:49:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 6900 transitions. [2024-11-14 04:49:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-14 04:49:15,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:15,010 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:15,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 04:49:15,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 04:49:15,214 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:15,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1945764756, now seen corresponding path program 1 times [2024-11-14 04:49:15,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:15,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689692183] [2024-11-14 04:49:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:15,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-14 04:49:15,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:15,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689692183] [2024-11-14 04:49:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689692183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:15,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870395990] [2024-11-14 04:49:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:15,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:15,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:15,357 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:15,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 04:49:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:15,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:49:15,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-14 04:49:15,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:15,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870395990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:15,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:15,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-14 04:49:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193182829] [2024-11-14 04:49:15,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:15,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:49:15,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:15,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:49:15,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:49:15,596 INFO L87 Difference]: Start difference. First operand 5628 states and 6900 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-14 04:49:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:16,505 INFO L93 Difference]: Finished difference Result 12081 states and 14928 transitions. [2024-11-14 04:49:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:49:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 146 [2024-11-14 04:49:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:16,591 INFO L225 Difference]: With dead ends: 12081 [2024-11-14 04:49:16,592 INFO L226 Difference]: Without dead ends: 7801 [2024-11-14 04:49:16,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:49:16,599 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 63 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:16,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 294 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:49:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2024-11-14 04:49:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 6326. [2024-11-14 04:49:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6326 states, 5239 states have (on average 1.2447031876312273) internal successors, (6521), 5277 states have internal predecessors, (6521), 581 states have call successors, (581), 478 states have call predecessors, (581), 505 states have return successors, (635), 571 states have call predecessors, (635), 579 states have call successors, (635) [2024-11-14 04:49:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6326 states to 6326 states and 7737 transitions. [2024-11-14 04:49:17,314 INFO L78 Accepts]: Start accepts. Automaton has 6326 states and 7737 transitions. Word has length 146 [2024-11-14 04:49:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:17,316 INFO L471 AbstractCegarLoop]: Abstraction has 6326 states and 7737 transitions. [2024-11-14 04:49:17,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-14 04:49:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6326 states and 7737 transitions. [2024-11-14 04:49:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-14 04:49:17,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:17,327 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:49:17,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 04:49:17,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:17,527 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:17,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1999511601, now seen corresponding path program 1 times [2024-11-14 04:49:17,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:17,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996214174] [2024-11-14 04:49:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:17,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-14 04:49:17,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996214174] [2024-11-14 04:49:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996214174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503678472] [2024-11-14 04:49:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:17,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:17,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:17,719 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:17,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 04:49:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:17,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:49:17,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 04:49:17,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:17,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503678472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:17,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:17,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2024-11-14 04:49:17,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293050935] [2024-11-14 04:49:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:17,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:49:17,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:49:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:49:17,947 INFO L87 Difference]: Start difference. First operand 6326 states and 7737 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:49:18,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:18,607 INFO L93 Difference]: Finished difference Result 11920 states and 14738 transitions. [2024-11-14 04:49:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:49:18,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2024-11-14 04:49:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:18,635 INFO L225 Difference]: With dead ends: 11920 [2024-11-14 04:49:18,635 INFO L226 Difference]: Without dead ends: 6896 [2024-11-14 04:49:18,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:49:18,645 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 84 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:18,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:49:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6896 states. [2024-11-14 04:49:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6896 to 6735. [2024-11-14 04:49:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 5624 states have (on average 1.219950213371266) internal successors, (6861), 5662 states have internal predecessors, (6861), 581 states have call successors, (581), 502 states have call predecessors, (581), 529 states have return successors, (658), 571 states have call predecessors, (658), 579 states have call successors, (658) [2024-11-14 04:49:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 8100 transitions. [2024-11-14 04:49:19,354 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 8100 transitions. Word has length 149 [2024-11-14 04:49:19,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:19,355 INFO L471 AbstractCegarLoop]: Abstraction has 6735 states and 8100 transitions. [2024-11-14 04:49:19,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-14 04:49:19,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 8100 transitions. [2024-11-14 04:49:19,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-14 04:49:19,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:19,366 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:49:19,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 04:49:19,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:19,567 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:19,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1997448786, now seen corresponding path program 1 times [2024-11-14 04:49:19,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:19,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017923146] [2024-11-14 04:49:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:19,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-14 04:49:19,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:19,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017923146] [2024-11-14 04:49:19,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017923146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:19,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754019764] [2024-11-14 04:49:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:19,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:19,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:19,651 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:19,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 04:49:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:19,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:49:19,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-14 04:49:19,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:19,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754019764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:19,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:19,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2024-11-14 04:49:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429338023] [2024-11-14 04:49:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:19,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:49:19,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:49:19,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:49:19,900 INFO L87 Difference]: Start difference. First operand 6735 states and 8100 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-14 04:49:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:20,779 INFO L93 Difference]: Finished difference Result 11985 states and 14694 transitions. [2024-11-14 04:49:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:49:20,780 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), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 149 [2024-11-14 04:49:20,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:20,813 INFO L225 Difference]: With dead ends: 11985 [2024-11-14 04:49:20,813 INFO L226 Difference]: Without dead ends: 6649 [2024-11-14 04:49:20,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:49:20,825 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 95 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:20,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 276 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:49:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6649 states. [2024-11-14 04:49:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6649 to 6571. [2024-11-14 04:49:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 5466 states have (on average 1.1807537504573729) internal successors, (6454), 5504 states have internal predecessors, (6454), 578 states have call successors, (578), 499 states have call predecessors, (578), 526 states have return successors, (655), 568 states have call predecessors, (655), 576 states have call successors, (655) [2024-11-14 04:49:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 7687 transitions. [2024-11-14 04:49:21,583 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 7687 transitions. Word has length 149 [2024-11-14 04:49:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:21,584 INFO L471 AbstractCegarLoop]: Abstraction has 6571 states and 7687 transitions. [2024-11-14 04:49:21,584 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), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-14 04:49:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 7687 transitions. [2024-11-14 04:49:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-14 04:49:21,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:21,597 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:49:21,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 04:49:21,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-14 04:49:21,798 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:21,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1043805311, now seen corresponding path program 1 times [2024-11-14 04:49:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:21,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582248228] [2024-11-14 04:49:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-14 04:49:22,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582248228] [2024-11-14 04:49:22,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582248228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:49:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604852319] [2024-11-14 04:49:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:22,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:22,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:49:22,013 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:49:22,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 04:49:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:22,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 04:49:22,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:49:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:49:22,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:49:22,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604852319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:22,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:49:22,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-14 04:49:22,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897113077] [2024-11-14 04:49:22,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:22,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:49:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:22,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:49:22,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:49:22,274 INFO L87 Difference]: Start difference. First operand 6571 states and 7687 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-14 04:49:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:24,009 INFO L93 Difference]: Finished difference Result 14873 states and 17395 transitions. [2024-11-14 04:49:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:49:24,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 152 [2024-11-14 04:49:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:24,053 INFO L225 Difference]: With dead ends: 14873 [2024-11-14 04:49:24,053 INFO L226 Difference]: Without dead ends: 9823 [2024-11-14 04:49:24,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:49:24,066 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 94 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:24,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 480 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:49:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9823 states. [2024-11-14 04:49:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9823 to 9028. [2024-11-14 04:49:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9028 states, 7435 states have (on average 1.1573638197713516) internal successors, (8605), 7488 states have internal predecessors, (8605), 843 states have call successors, (843), 711 states have call predecessors, (843), 749 states have return successors, (1001), 829 states have call predecessors, (1001), 841 states have call successors, (1001) [2024-11-14 04:49:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9028 states to 9028 states and 10449 transitions. [2024-11-14 04:49:25,327 INFO L78 Accepts]: Start accepts. Automaton has 9028 states and 10449 transitions. Word has length 152 [2024-11-14 04:49:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:25,328 INFO L471 AbstractCegarLoop]: Abstraction has 9028 states and 10449 transitions. [2024-11-14 04:49:25,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-14 04:49:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 9028 states and 10449 transitions. [2024-11-14 04:49:25,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-14 04:49:25,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:25,341 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:49:25,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-14 04:49:25,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:49:25,546 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:25,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1038129939, now seen corresponding path program 1 times [2024-11-14 04:49:25,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:25,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973846460] [2024-11-14 04:49:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:25,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:49:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-14 04:49:25,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:49:25,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973846460] [2024-11-14 04:49:25,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973846460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:49:25,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:49:25,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:49:25,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752837771] [2024-11-14 04:49:25,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:49:25,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:49:25,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:49:25,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:49:25,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:49:25,891 INFO L87 Difference]: Start difference. First operand 9028 states and 10449 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-14 04:49:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:49:30,170 INFO L93 Difference]: Finished difference Result 36749 states and 42686 transitions. [2024-11-14 04:49:30,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:49:30,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 181 [2024-11-14 04:49:30,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:49:30,277 INFO L225 Difference]: With dead ends: 36749 [2024-11-14 04:49:30,277 INFO L226 Difference]: Without dead ends: 32921 [2024-11-14 04:49:30,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:49:30,295 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 399 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:49:30,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1196 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:49:30,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32921 states. [2024-11-14 04:49:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32921 to 20258. [2024-11-14 04:49:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20258 states, 16607 states have (on average 1.1584271692659722) internal successors, (19238), 16720 states have internal predecessors, (19238), 1944 states have call successors, (1944), 1608 states have call predecessors, (1944), 1706 states have return successors, (2324), 1930 states have call predecessors, (2324), 1942 states have call successors, (2324) [2024-11-14 04:49:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20258 states to 20258 states and 23506 transitions. [2024-11-14 04:49:33,394 INFO L78 Accepts]: Start accepts. Automaton has 20258 states and 23506 transitions. Word has length 181 [2024-11-14 04:49:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:49:33,394 INFO L471 AbstractCegarLoop]: Abstraction has 20258 states and 23506 transitions. [2024-11-14 04:49:33,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-14 04:49:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 20258 states and 23506 transitions. [2024-11-14 04:49:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-14 04:49:33,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:49:33,426 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:49:33,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-14 04:49:33,426 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:49:33,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:49:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash -873179401, now seen corresponding path program 1 times [2024-11-14 04:49:33,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:49:33,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824890399] [2024-11-14 04:49:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:49:33,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:49:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:49:33,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 04:49:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:49:33,606 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 04:49:33,606 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 04:49:33,607 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 04:49:33,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-14 04:49:33,614 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:49:33,900 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:49:33,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:49:33 BoogieIcfgContainer [2024-11-14 04:49:33,903 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:49:33,906 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:49:33,906 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:49:33,907 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:49:33,907 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:48:43" (3/4) ... [2024-11-14 04:49:33,908 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 04:49:34,182 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:49:34,183 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:49:34,184 INFO L158 Benchmark]: Toolchain (without parser) took 52734.39ms. Allocated memory was 117.4MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 92.6MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 623.0MB. Max. memory is 16.1GB. [2024-11-14 04:49:34,185 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:49:34,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.02ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 77.7MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:49:34,185 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.47ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 75.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:49:34,186 INFO L158 Benchmark]: Boogie Preprocessor took 32.74ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 74.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:49:34,186 INFO L158 Benchmark]: RCFGBuilder took 1281.47ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 73.9MB in the end (delta: -10.4kB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2024-11-14 04:49:34,190 INFO L158 Benchmark]: TraceAbstraction took 50544.02ms. Allocated memory was 117.4MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 73.3MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 576.7MB. Max. memory is 16.1GB. [2024-11-14 04:49:34,190 INFO L158 Benchmark]: Witness Printer took 277.31ms. Allocated memory is still 2.7GB. Free memory was 2.1GB in the beginning and 2.0GB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:49:34,192 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.02ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 77.7MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.47ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 75.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.74ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 74.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1281.47ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 73.9MB in the end (delta: -10.4kB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. * TraceAbstraction took 50544.02ms. Allocated memory was 117.4MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 73.3MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 576.7MB. Max. memory is 16.1GB. * Witness Printer took 277.31ms. Allocated memory is still 2.7GB. Free memory was 2.1GB in the beginning and 2.0GB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int m_pc = 0; [L25] int t1_pc = 0; [L26] int t2_pc = 0; [L27] int t3_pc = 0; [L28] int m_st ; [L29] int t1_st ; [L30] int t2_st ; [L31] int t3_st ; [L32] int m_i ; [L33] int t1_i ; [L34] int t2_i ; [L35] int t3_i ; [L36] int M_E = 2; [L37] int T1_E = 2; [L38] int T2_E = 2; [L39] int T3_E = 2; [L40] int E_M = 2; [L41] int E_1 = 2; [L42] int E_2 = 2; [L43] int E_3 = 2; [L49] int token ; [L51] int local ; [L735] int __retres1 ; [L739] CALL init_model() [L648] m_i = 1 [L649] t1_i = 1 [L650] t2_i = 1 [L651] t3_i = 1 [L739] RET init_model() [L740] CALL start_simulation() [L676] int kernel_st ; [L677] int tmp ; [L678] int tmp___0 ; [L682] kernel_st = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L683] FCALL update_channels() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L684] CALL init_threads() [L304] COND TRUE m_i == 1 [L305] m_st = 0 [L309] COND TRUE t1_i == 1 [L310] t1_st = 0 [L314] COND TRUE t2_i == 1 [L315] t2_st = 0 [L319] COND TRUE t3_i == 1 [L320] t3_st = 0 [L684] RET init_threads() [L685] CALL fire_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L441] COND FALSE !(M_E == 0) [L446] COND FALSE !(T1_E == 0) [L451] COND FALSE !(T2_E == 0) [L456] COND FALSE !(T3_E == 0) [L461] COND FALSE !(E_M == 0) [L466] COND FALSE !(E_1 == 0) [L471] COND FALSE !(E_2 == 0) [L476] COND FALSE !(E_3 == 0) [L685] RET fire_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L686] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L220] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L230] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND FALSE !(\read(tmp)) [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L239] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L249] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND FALSE !(\read(tmp___0)) [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L258] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L268] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND FALSE !(\read(tmp___1)) [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L277] COND FALSE !(t3_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L287] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, __retres1=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND FALSE !(\read(tmp___2)) [L686] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L687] CALL reset_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L489] COND FALSE !(M_E == 1) [L494] COND FALSE !(T1_E == 1) [L499] COND FALSE !(T2_E == 1) [L504] COND FALSE !(T3_E == 1) [L509] COND FALSE !(E_M == 1) [L514] COND FALSE !(E_1 == 1) [L519] COND FALSE !(E_2 == 1) [L524] COND FALSE !(E_3 == 1) [L687] RET reset_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L690] COND TRUE 1 [L693] kernel_st = 1 [L694] CALL eval() [L360] int tmp ; VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L364] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L367] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L329] int __retres1 ; [L332] COND TRUE m_st == 0 [L333] __retres1 = 1 [L355] return (__retres1); [L367] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L367] tmp = exists_runnable_thread() [L369] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L374] COND TRUE m_st == 0 [L375] int tmp_ndt_1; [L376] tmp_ndt_1 = __VERIFIER_nondet_int() [L377] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L388] COND TRUE t1_st == 0 [L389] int tmp_ndt_2; [L390] tmp_ndt_2 = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp_ndt_2) [L393] t1_st = 1 [L394] CALL transmit1() [L112] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, token=0] [L123] COND TRUE 1 [L125] t1_pc = 1 [L126] t1_st = 2 [L394] RET transmit1() [L402] COND TRUE t2_st == 0 [L403] int tmp_ndt_3; [L404] tmp_ndt_3 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp_ndt_3) [L407] t2_st = 1 [L408] CALL transmit2() [L148] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=1, t3_i=1, t3_pc=0, t3_st=0, token=0] [L159] COND TRUE 1 [L161] t2_pc = 1 [L162] t2_st = 2 [L408] RET transmit2() [L416] COND TRUE t3_st == 0 [L417] int tmp_ndt_4; [L418] tmp_ndt_4 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp_ndt_4) [L421] t3_st = 1 [L422] CALL transmit3() [L184] COND TRUE t3_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=0, t3_st=1, token=0] [L195] COND TRUE 1 [L197] t3_pc = 1 [L198] t3_st = 2 [L422] RET transmit3() [L364] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L367] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L329] int __retres1 ; [L332] COND TRUE m_st == 0 [L333] __retres1 = 1 [L355] return (__retres1); [L367] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L367] tmp = exists_runnable_thread() [L369] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L374] COND TRUE m_st == 0 [L375] int tmp_ndt_1; [L376] tmp_ndt_1 = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp_ndt_1) [L379] m_st = 1 [L380] CALL master() [L54] int tmp_var = __VERIFIER_nondet_int(); [L56] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L67] COND TRUE 1 [L70] token = __VERIFIER_nondet_int() [L71] local = token [L72] E_1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L73] CALL immediate_notify() VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L581] CALL activate_threads() VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L220] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L230] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND FALSE !(\read(tmp)) [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L239] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L240] COND TRUE E_1 == 1 [L241] __retres1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND TRUE \read(tmp___0) [L552] t1_st = 0 [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L258] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L259] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L268] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND FALSE !(\read(tmp___1)) [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L277] COND TRUE t3_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L278] COND FALSE !(E_3 == 1) VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L287] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND FALSE !(\read(tmp___2)) [L581] RET activate_threads() VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L73] RET immediate_notify() VAL [E_1=1, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L74] E_1 = 2 [L75] m_pc = 1 [L76] m_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=0, token=0] [L380] RET master() [L388] COND TRUE t1_st == 0 [L389] int tmp_ndt_2; [L390] tmp_ndt_2 = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp_ndt_2) [L393] t1_st = 1 [L394] CALL transmit1() [L112] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=0] [L115] COND TRUE t1_pc == 1 [L131] token += 1 [L132] E_2 = 1 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L133] CALL immediate_notify() VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L581] CALL activate_threads() VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L220] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L221] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L230] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND FALSE !(\read(tmp)) [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L239] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L240] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L249] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND FALSE !(\read(tmp___0)) [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L258] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L259] COND TRUE E_2 == 1 [L260] __retres1 = 1 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=1, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=1] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND TRUE \read(tmp___1) [L560] t2_st = 0 [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, token=1] [L277] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, token=1] [L278] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, token=1] [L287] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, token=1] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND FALSE !(\read(tmp___2)) [L581] RET activate_threads() VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, token=1] [L133] RET immediate_notify() VAL [E_1=2, E_2=1, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, token=1] [L134] E_2 = 2 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, token=1] [L123] COND TRUE 1 [L125] t1_pc = 1 [L126] t1_st = 2 [L394] RET transmit1() [L402] COND TRUE t2_st == 0 [L403] int tmp_ndt_3; [L404] tmp_ndt_3 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp_ndt_3) [L407] t2_st = 1 [L408] CALL transmit2() [L148] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=1] [L151] COND TRUE t2_pc == 1 [L167] token += 1 [L168] E_3 = 1 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L169] CALL immediate_notify() VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L581] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L220] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L221] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L230] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND FALSE !(\read(tmp)) [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L239] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L240] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L249] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND FALSE !(\read(tmp___0)) [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L258] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L259] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L268] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=0, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND FALSE !(\read(tmp___1)) [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L277] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L278] COND TRUE E_3 == 1 [L279] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, __retres1=1, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, token=2] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND TRUE \read(tmp___2) [L568] t3_st = 0 [L581] RET activate_threads() VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, token=2] [L169] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, token=2] [L170] E_3 = 2 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, token=2] [L159] COND TRUE 1 [L161] t2_pc = 1 [L162] t2_st = 2 [L408] RET transmit2() [L416] COND TRUE t3_st == 0 [L417] int tmp_ndt_4; [L418] tmp_ndt_4 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp_ndt_4) [L421] t3_st = 1 [L422] CALL transmit3() [L184] COND FALSE !(t3_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=2] [L187] COND TRUE t3_pc == 1 [L203] token += 1 [L204] E_M = 1 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L205] CALL immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L581] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L534] int tmp ; [L535] int tmp___0 ; [L536] int tmp___1 ; [L537] int tmp___2 ; [L541] CALL, EXPR is_master_triggered() [L217] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L220] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L221] COND TRUE E_M == 1 [L222] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=1, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L232] return (__retres1); [L541] RET, EXPR is_master_triggered() [L541] tmp = is_master_triggered() [L543] COND TRUE \read(tmp) [L544] m_st = 0 [L549] CALL, EXPR is_transmit1_triggered() [L236] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L239] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L240] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L249] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L251] return (__retres1); [L549] RET, EXPR is_transmit1_triggered() [L549] tmp___0 = is_transmit1_triggered() [L551] COND FALSE !(\read(tmp___0)) [L557] CALL, EXPR is_transmit2_triggered() [L255] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L258] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L259] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L268] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L270] return (__retres1); [L557] RET, EXPR is_transmit2_triggered() [L557] tmp___1 = is_transmit2_triggered() [L559] COND FALSE !(\read(tmp___1)) [L565] CALL, EXPR is_transmit3_triggered() [L274] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L277] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L278] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L287] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, __retres1=0, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L289] return (__retres1); [L565] RET, EXPR is_transmit3_triggered() [L565] tmp___2 = is_transmit3_triggered() [L567] COND FALSE !(\read(tmp___2)) [L581] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L205] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L206] E_M = 2 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, token=3] [L195] COND TRUE 1 [L197] t3_pc = 1 [L198] t3_st = 2 [L422] RET transmit3() [L364] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L367] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L329] int __retres1 ; [L332] COND TRUE m_st == 0 [L333] __retres1 = 1 [L355] return (__retres1); [L367] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L367] tmp = exists_runnable_thread() [L369] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L374] COND TRUE m_st == 0 [L375] int tmp_ndt_1; [L376] tmp_ndt_1 = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp_ndt_1) [L379] m_st = 1 [L380] CALL master() [L54] int tmp_var = __VERIFIER_nondet_int(); [L56] COND FALSE !(m_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L59] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L81] COND FALSE !(token != local + 3) [L86] COND TRUE tmp_var <= 5 [L87] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L92] COND TRUE tmp_var <= 5 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L93] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, tmp_var=5, token=3] [L94] COND TRUE tmp_var == 5 VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L95] CALL error() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=3] [L20] reach_error() VAL [E_1=2, E_2=2, E_3=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, token=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.2s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3238 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3184 mSDsluCounter, 8108 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4371 mSDsCounter, 418 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3368 IncrementalHoareTripleChecker+Invalid, 3786 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 418 mSolverCounterUnsat, 3737 mSDtfsCounter, 3368 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2425 GetRequests, 2289 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20258occurred in iteration=23, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 20681 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 5033 NumberOfCodeBlocks, 5033 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 4807 ConstructedInterpolants, 0 QuantifiedInterpolants, 8080 SizeOfPredicates, 2 NumberOfNonLiveVariables, 8961 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 42 InterpolantComputations, 23 PerfectInterpolantSequences, 2862/3295 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-14 04:49:34,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778ea79-d95e-46bf-93b3-c2cbd410c2e7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE