./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5 --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 f1e7a931f8678a52ab26f5a1b74bb59e33ef4ed9c03430a4d28342e1a824b13d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:56:53,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:56:53,215 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 18:56:53,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:56:53,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 18:56:53,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:56:53,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 18:56:53,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 18:56:53,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:56:53,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 18:56:53,246 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 18:56:53,261 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 18:56:53,262 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 18:56:53,266 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 18:56:53,267 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 18:56:53,267 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 18:56:53,269 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 18:56:53,270 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 18:56:53,270 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 18:56:53,270 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 18:56:53,271 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 18:56:53,271 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 18:56:53,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:56:53,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:56:53,273 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 18:56:53,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:56:53,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 18:56:53,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:56:53,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:56:53,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:56:53,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:56:53,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 18:56:53,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:56:53,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:56:53,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:56:53,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 18:56:53,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 18:56:53,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:56:53,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:56:53,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:56:53,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:56:53,280 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 18:56:53,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:56:53,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 18:56:53,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:56:53,282 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 18:56:53,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:56:53,282 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_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e7a931f8678a52ab26f5a1b74bb59e33ef4ed9c03430a4d28342e1a824b13d [2023-11-21 18:56:53,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:56:53,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:56:53,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:56:53,590 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:56:53,592 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:56:53,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2023-11-21 18:56:56,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:56:57,206 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:56:57,207 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2023-11-21 18:56:57,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/data/e43122708/a842538671ec48a4a3972b788a10dbe3/FLAGb1a860914 [2023-11-21 18:56:57,263 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/data/e43122708/a842538671ec48a4a3972b788a10dbe3 [2023-11-21 18:56:57,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:56:57,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:56:57,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:56:57,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:56:57,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:56:57,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:56:57" (1/1) ... [2023-11-21 18:56:57,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a86592a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:57, skipping insertion in model container [2023-11-21 18:56:57,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:56:57" (1/1) ... [2023-11-21 18:56:57,404 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:56:57,591 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_b68d92c9-f429-407e-b0a5-634a58a41ccb/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c[1870,1883] [2023-11-21 18:56:58,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:56:58,448 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:56:58,459 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/ctm.ok2.i","-S") [42] [2023-11-21 18:56:58,465 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_b68d92c9-f429-407e-b0a5-634a58a41ccb/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c[1870,1883] [2023-11-21 18:56:58,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:56:58,763 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:56:58,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58 WrapperNode [2023-11-21 18:56:58,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:56:58,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:56:58,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:56:58,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:56:58,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:58,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,191 INFO L138 Inliner]: procedures = 99, calls = 2725, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 8386 [2023-11-21 18:56:59,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:56:59,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:56:59,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:56:59,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:56:59,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:56:59,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:56:59,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:56:59,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:56:59,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (1/1) ... [2023-11-21 18:56:59,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 18:56:59,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 18:56:59,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 18:56:59,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b68d92c9-f429-407e-b0a5-634a58a41ccb/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 18:56:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-11-21 18:56:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-11-21 18:56:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-11-21 18:56:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-11-21 18:56:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:56:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-11-21 18:56:59,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-11-21 18:56:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-21 18:56:59,728 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-21 18:56:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-11-21 18:56:59,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-11-21 18:56:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-11-21 18:56:59,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-11-21 18:56:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-11-21 18:56:59,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-11-21 18:56:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-11-21 18:56:59,730 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-11-21 18:56:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-11-21 18:56:59,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-11-21 18:56:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-11-21 18:56:59,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-11-21 18:56:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:56:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-21 18:56:59,732 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-21 18:56:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-11-21 18:56:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-11-21 18:56:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-11-21 18:56:59,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-11-21 18:56:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-11-21 18:56:59,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-11-21 18:56:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-11-21 18:56:59,734 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-11-21 18:56:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-11-21 18:56:59,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-11-21 18:56:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-21 18:56:59,735 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-21 18:56:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:56:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-21 18:56:59,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-21 18:56:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-11-21 18:56:59,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-11-21 18:56:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-11-21 18:56:59,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-11-21 18:56:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-11-21 18:56:59,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-11-21 18:56:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-21 18:56:59,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-21 18:56:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-11-21 18:56:59,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-11-21 18:56:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-21 18:56:59,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-21 18:56:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-11-21 18:56:59,738 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-11-21 18:56:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-11-21 18:56:59,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-11-21 18:56:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-11-21 18:56:59,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-11-21 18:56:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-11-21 18:56:59,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-11-21 18:56:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-11-21 18:56:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-11-21 18:56:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-11-21 18:56:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-11-21 18:56:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-21 18:56:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-21 18:56:59,741 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-11-21 18:56:59,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-11-21 18:56:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-11-21 18:56:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-11-21 18:56:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-11-21 18:56:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-11-21 18:56:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-11-21 18:56:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-11-21 18:56:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-11-21 18:56:59,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-11-21 18:56:59,742 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-11-21 18:56:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-11-21 18:56:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-11-21 18:56:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-11-21 18:56:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-11-21 18:56:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-11-21 18:56:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2023-11-21 18:56:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2023-11-21 18:56:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-11-21 18:56:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-11-21 18:56:59,743 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-11-21 18:56:59,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-11-21 18:56:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-11-21 18:56:59,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-11-21 18:56:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2023-11-21 18:56:59,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2023-11-21 18:56:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:56:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-11-21 18:56:59,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-11-21 18:56:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:56:59,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:57:00,335 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:57:00,338 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:57:24,867 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:57:35,150 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:57:35,151 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 18:57:35,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:35 BoogieIcfgContainer [2023-11-21 18:57:35,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:57:35,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 18:57:35,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 18:57:35,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 18:57:35,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 06:56:57" (1/3) ... [2023-11-21 18:57:35,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3a98ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:35, skipping insertion in model container [2023-11-21 18:57:35,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:56:58" (2/3) ... [2023-11-21 18:57:35,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3a98ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 06:57:35, skipping insertion in model container [2023-11-21 18:57:35,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:57:35" (3/3) ... [2023-11-21 18:57:35,167 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-2.c [2023-11-21 18:57:35,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 18:57:35,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 18:57:35,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 18:57:35,303 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;@2f853659, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 18:57:35,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 18:57:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 959 states, 608 states have (on average 1.3848684210526316) internal successors, (842), 632 states have internal predecessors, (842), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2023-11-21 18:57:35,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 18:57:35,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 18:57:35,330 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] [2023-11-21 18:57:35,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 18:57:35,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:57:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash 250533301, now seen corresponding path program 1 times [2023-11-21 18:57:35,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 18:57:35,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034394598] [2023-11-21 18:57:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 18:57:35,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms