./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ --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 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:20:12,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:20:12,914 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:20:12,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:20:12,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:20:12,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:20:12,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:20:12,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:20:12,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:20:12,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:20:12,983 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:20:12,983 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:20:12,983 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:20:12,985 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:20:12,986 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:20:12,986 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:20:12,986 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:20:12,987 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:20:12,987 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:20:12,987 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:20:12,989 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:20:12,990 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:20:12,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:20:12,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:20:12,991 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:20:12,992 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:20:12,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:20:12,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:20:12,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:20:12,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:20:12,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:20:12,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:20:12,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:20:12,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:20:12,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:20:12,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:20:12,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:12,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:20:12,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:20:12,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:20:12,997 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:20:12,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:20:12,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:20:12,997 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:20:12,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:20:12,998 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b [2023-11-19 05:20:13,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:20:13,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:20:13,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:20:13,337 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:20:13,337 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:20:13,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2023-11-19 05:20:16,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:20:16,866 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:20:16,867 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2023-11-19 05:20:16,890 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/data/4002c701e/f64fac3580e3483998236851d97f67be/FLAGa2480d97c [2023-11-19 05:20:16,929 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/data/4002c701e/f64fac3580e3483998236851d97f67be [2023-11-19 05:20:16,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:20:16,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:20:16,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:16,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:20:16,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:20:16,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:16" (1/1) ... [2023-11-19 05:20:16,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d8a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:16, skipping insertion in model container [2023-11-19 05:20:16,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:16" (1/1) ... [2023-11-19 05:20:17,049 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:20:17,204 WARN L240 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_b56b0f7b-2df4-40a9-b32a-41e591b2518a/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c[1937,1950] [2023-11-19 05:20:17,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:17,578 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:20:17,588 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/nxt.ok2.i","-S") [47] [2023-11-19 05:20:17,594 WARN L240 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_b56b0f7b-2df4-40a9-b32a-41e591b2518a/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c[1937,1950] [2023-11-19 05:20:17,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:17,875 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:20:17,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17 WrapperNode [2023-11-19 05:20:17,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:17,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:17,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:20:17,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:20:17,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:17,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,274 INFO L138 Inliner]: procedures = 58, calls = 1758, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3927 [2023-11-19 05:20:18,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:18,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:20:18,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:20:18,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:20:18,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,493 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:20:18,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:20:18,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:20:18,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:20:18,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (1/1) ... [2023-11-19 05:20:18,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:18,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:18,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:20:18,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b56b0f7b-2df4-40a9-b32a-41e591b2518a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:20:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:20:18,654 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-19 05:20:18,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-19 05:20:18,655 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-11-19 05:20:18,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-11-19 05:20:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:20:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-19 05:20:18,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-19 05:20:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-19 05:20:18,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-19 05:20:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-11-19 05:20:18,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-11-19 05:20:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:20:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-19 05:20:18,659 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-19 05:20:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-11-19 05:20:18,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-11-19 05:20:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-19 05:20:18,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-19 05:20:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-19 05:20:18,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-19 05:20:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:20:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2023-11-19 05:20:18,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2023-11-19 05:20:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:20:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-19 05:20:18,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-19 05:20:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-11-19 05:20:18,664 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-11-19 05:20:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:20:18,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:20:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:20:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:20:18,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:20:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-11-19 05:20:18,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-11-19 05:20:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-19 05:20:18,666 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-19 05:20:18,666 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-11-19 05:20:18,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-11-19 05:20:19,092 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:20:19,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:20:26,787 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:20:27,023 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:20:27,023 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:20:27,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:27 BoogieIcfgContainer [2023-11-19 05:20:27,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:20:27,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:20:27,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:20:27,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:20:27,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:20:16" (1/3) ... [2023-11-19 05:20:27,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5394b59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:27, skipping insertion in model container [2023-11-19 05:20:27,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:17" (2/3) ... [2023-11-19 05:20:27,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5394b59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:27, skipping insertion in model container [2023-11-19 05:20:27,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:27" (3/3) ... [2023-11-19 05:20:27,045 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-2.c [2023-11-19 05:20:27,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:20:27,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:20:27,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:20:27,185 INFO L357 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, mHoare=true, 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;@3718930d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:20:27,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:20:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 1151 states, 714 states have (on average 1.2857142857142858) internal successors, (918), 746 states have internal predecessors, (918), 419 states have call successors, (419), 16 states have call predecessors, (419), 16 states have return successors, (419), 417 states have call predecessors, (419), 419 states have call successors, (419) [2023-11-19 05:20:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-11-19 05:20:27,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:27,274 INFO L195 NwaCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:27,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:20:27,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:27,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2015252477, now seen corresponding path program 1 times [2023-11-19 05:20:27,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:27,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144640641] [2023-11-19 05:20:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat