./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire --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 cdfe8cdf5ef6acb015ae980f200d66be6855e21e0a93c803bebabec43209e961 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:00,710 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:00,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:08:00,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:00,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:00,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:00,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:00,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:00,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:00,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:00,837 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:00,838 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:00,839 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:00,839 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:00,840 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:00,841 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:00,841 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:00,842 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:00,842 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:00,843 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:00,844 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:00,845 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:00,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:00,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:00,847 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:08:00,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:00,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:08:00,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:00,849 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:00,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:00,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:00,850 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:08:00,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:00,851 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:00,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:00,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:00,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:00,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:00,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:00,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:00,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:00,856 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:00,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:00,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:00,857 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:00,857 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:00,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:00,858 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_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdfe8cdf5ef6acb015ae980f200d66be6855e21e0a93c803bebabec43209e961 [2023-11-23 21:08:01,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:01,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:01,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:01,129 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:01,130 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:01,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c [2023-11-23 21:08:04,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:04,855 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:04,856 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c [2023-11-23 21:08:04,893 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/data/e02c3022b/dbacc5aadab74ab0afd3a839e9ff29bf/FLAGe1cce4b15 [2023-11-23 21:08:04,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/data/e02c3022b/dbacc5aadab74ab0afd3a839e9ff29bf [2023-11-23 21:08:04,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:04,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:04,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:04,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:04,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:04,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:04" (1/1) ... [2023-11-23 21:08:04,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26aab923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:04, skipping insertion in model container [2023-11-23 21:08:04,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:04" (1/1) ... [2023-11-23 21:08:05,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:05,244 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_e301884f-4b20-44eb-ac8e-75325427ad93/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c[1871,1884] [2023-11-23 21:08:06,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:06,088 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:06,100 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/ctm.bug2.i","-S") [42] [2023-11-23 21:08:06,109 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_e301884f-4b20-44eb-ac8e-75325427ad93/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-1.c[1871,1884] [2023-11-23 21:08:06,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:06,530 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:06,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06 WrapperNode [2023-11-23 21:08:06,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:06,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:06,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:06,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:06,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:06,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:06,960 INFO L138 Inliner]: procedures = 99, calls = 2724, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8419 [2023-11-23 21:08:06,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:06,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:06,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:06,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:06,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:06,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:07,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:07,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:07,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:07,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:07,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:07,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:07,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:07,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:07,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:07,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:07,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (1/1) ... [2023-11-23 21:08:07,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:07,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:07,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:07,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e301884f-4b20-44eb-ac8e-75325427ad93/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-11-23 21:08:07,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-11-23 21:08:07,519 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-11-23 21:08:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-11-23 21:08:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:08:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-11-23 21:08:07,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-11-23 21:08:07,521 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-23 21:08:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-23 21:08:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-11-23 21:08:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-11-23 21:08:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-11-23 21:08:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-11-23 21:08:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-11-23 21:08:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-11-23 21:08:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-11-23 21:08:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-11-23 21:08:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-11-23 21:08:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-11-23 21:08:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-11-23 21:08:07,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-11-23 21:08:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:08:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-23 21:08:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-23 21:08:07,526 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-11-23 21:08:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-11-23 21:08:07,527 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-11-23 21:08:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-11-23 21:08:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-11-23 21:08:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-11-23 21:08:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-11-23 21:08:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-11-23 21:08:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-11-23 21:08:07,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-11-23 21:08:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-23 21:08:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-23 21:08:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-23 21:08:07,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-23 21:08:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-11-23 21:08:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-11-23 21:08:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-11-23 21:08:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-11-23 21:08:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-11-23 21:08:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-11-23 21:08:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-23 21:08:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-23 21:08:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-11-23 21:08:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-11-23 21:08:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-23 21:08:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-23 21:08:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-11-23 21:08:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-11-23 21:08:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-11-23 21:08:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-11-23 21:08:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-11-23 21:08:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-11-23 21:08:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-11-23 21:08:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-11-23 21:08:07,535 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-11-23 21:08:07,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-11-23 21:08:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-11-23 21:08:07,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-11-23 21:08:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-23 21:08:07,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-23 21:08:07,536 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-11-23 21:08:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-11-23 21:08:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-11-23 21:08:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-11-23 21:08:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-11-23 21:08:07,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-11-23 21:08:07,537 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-11-23 21:08:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-11-23 21:08:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-11-23 21:08:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-11-23 21:08:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-11-23 21:08:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-11-23 21:08:07,538 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-11-23 21:08:07,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-11-23 21:08:07,539 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-11-23 21:08:07,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-11-23 21:08:07,539 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-11-23 21:08:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-11-23 21:08:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-11-23 21:08:07,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-11-23 21:08:07,540 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-11-23 21:08:07,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-11-23 21:08:07,570 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2023-11-23 21:08:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2023-11-23 21:08:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-11-23 21:08:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-11-23 21:08:07,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:07,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:08,120 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:08,123 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:26,270 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:34,559 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:34,559 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:08:34,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:34 BoogieIcfgContainer [2023-11-23 21:08:34,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:34,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:34,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:34,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:34,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:04" (1/3) ... [2023-11-23 21:08:34,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b3ec85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:34, skipping insertion in model container [2023-11-23 21:08:34,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:06" (2/3) ... [2023-11-23 21:08:34,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b3ec85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:34, skipping insertion in model container [2023-11-23 21:08:34,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:34" (3/3) ... [2023-11-23 21:08:34,577 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-1.c [2023-11-23 21:08:34,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:34,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:08:34,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:34,703 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;@30cf4676, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:34,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:08:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 952 states, 604 states have (on average 1.3857615894039734) internal successors, (837), 628 states have internal predecessors, (837), 302 states have call successors, (302), 44 states have call predecessors, (302), 44 states have return successors, (302), 292 states have call predecessors, (302), 302 states have call successors, (302) [2023-11-23 21:08:34,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:08:34,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:34,726 INFO L195 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] [2023-11-23 21:08:34,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:34,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1428303454, now seen corresponding path program 1 times [2023-11-23 21:08:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:34,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828503803] [2023-11-23 21:08:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:34,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms