./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.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_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/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_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/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_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/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 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:49:04,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:49:04,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:49:04,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:49:04,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:49:04,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:49:04,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:49:04,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:49:04,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:49:04,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:49:04,275 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:49:04,275 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:49:04,275 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:49:04,276 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:49:04,276 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:49:04,277 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:49:04,277 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:49:04,277 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:49:04,277 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:49:04,278 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:49:04,278 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:49:04,278 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:49:04,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:49:04,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:49:04,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:49:04,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:49:04,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:49:04,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:49:04,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:49:04,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:49:04,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:49:04,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:49:04,280 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:49:04,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:49:04,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:49:04,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:49:04,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:49:04,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:49:04,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:49:04,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:49:04,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:49:04,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:49:04,282 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:49:04,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:49:04,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:49:04,282 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:49:04,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:49:04,282 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_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/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 -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 [2024-11-14 03:49:04,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:49:04,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:49:04,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:49:04,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:49:04,595 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:49:04,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c Unable to find full path for "g++" [2024-11-14 03:49:06,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:49:07,091 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:49:07,092 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2024-11-14 03:49:07,149 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/data/a85bb1b6f/2848f19ccc134cffacc28214761d654f/FLAG77c3965de [2024-11-14 03:49:07,170 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/data/a85bb1b6f/2848f19ccc134cffacc28214761d654f [2024-11-14 03:49:07,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:49:07,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:49:07,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:49:07,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:49:07,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:49:07,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:49:07" (1/1) ... [2024-11-14 03:49:07,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f955dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:07, skipping insertion in model container [2024-11-14 03:49:07,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:49:07" (1/1) ... [2024-11-14 03:49:07,347 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:49:07,620 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_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2024-11-14 03:49:09,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:49:09,153 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:49:09,162 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok1.i","-S") [42] [2024-11-14 03:49:09,169 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_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2024-11-14 03:49:10,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:49:10,345 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:49:10,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10 WrapperNode [2024-11-14 03:49:10,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:49:10,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:49:10,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:49:10,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:49:10,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:10,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:13,057 INFO L138 Inliner]: procedures = 57, calls = 18490, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40483 [2024-11-14 03:49:13,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:49:13,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:49:13,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:49:13,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:49:13,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:13,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:13,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:13,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:14,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:15,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:15,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:15,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:15,677 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:49:15,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:49:15,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:49:15,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:49:15,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (1/1) ... [2024-11-14 03:49:15,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:49:15,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:15,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:49:15,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b934b1-dfc6-4caa-80c3-0cdec20831a5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:49:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:49:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2024-11-14 03:49:15,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2024-11-14 03:49:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2024-11-14 03:49:15,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2024-11-14 03:49:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:49:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2024-11-14 03:49:15,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2024-11-14 03:49:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2024-11-14 03:49:15,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2024-11-14 03:49:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2024-11-14 03:49:15,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2024-11-14 03:49:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:49:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2024-11-14 03:49:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2024-11-14 03:49:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2024-11-14 03:49:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2024-11-14 03:49:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-14 03:49:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2024-11-14 03:49:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-14 03:49:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2024-11-14 03:49:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:49:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-14 03:49:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2024-11-14 03:49:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:49:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2024-11-14 03:49:15,758 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2024-11-14 03:49:15,758 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:49:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:49:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:49:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:49:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:49:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2024-11-14 03:49:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2024-11-14 03:49:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2024-11-14 03:49:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2024-11-14 03:49:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2024-11-14 03:49:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2024-11-14 03:49:18,258 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:49:18,261 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:50:01,660 INFO L? ?]: Removed 274 outVars from TransFormulas that were not future-live. [2024-11-14 03:50:01,660 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:50:02,948 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:50:02,949 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:50:02,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:50:02 BoogieIcfgContainer [2024-11-14 03:50:02,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:50:02,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:50:02,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:50:02,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:50:02,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:49:07" (1/3) ... [2024-11-14 03:50:02,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd13852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:50:02, skipping insertion in model container [2024-11-14 03:50:02,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:10" (2/3) ... [2024-11-14 03:50:02,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd13852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:50:02, skipping insertion in model container [2024-11-14 03:50:02,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:50:02" (3/3) ... [2024-11-14 03:50:02,960 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2024-11-14 03:50:02,976 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:50:02,978 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG rekcba_nxt.1.M4-1.c that has 16 procedures, 11972 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:50:03,319 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:50:03,334 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;@7e2d2008, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:50:03,335 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:50:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 11972 states, 7837 states have (on average 1.3205308153630215) internal successors, (10349), 7950 states have internal predecessors, (10349), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2024-11-14 03:50:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3937 [2024-11-14 03:50:03,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:03,937 INFO L215 NwaCegarLoop]: trace histogram [337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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03:50:03,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:50:03,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:03,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1707197047, now seen corresponding path program 1 times [2024-11-14 03:50:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:50:03,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29614962] [2024-11-14 03:50:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms