./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh --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 5e0651820efa05b0d1173e869e8cdb7c85f212e339148a75ab7dde9c1235571e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:38:41,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:38:41,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:38:41,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:38:41,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:38:41,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:38:41,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:38:41,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:38:41,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:38:41,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:38:41,360 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:38:41,360 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:38:41,361 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:38:41,361 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:38:41,362 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:38:41,362 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:38:41,363 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:38:41,364 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:38:41,364 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:38:41,365 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:38:41,365 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:38:41,366 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:38:41,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:38:41,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:38:41,368 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:38:41,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:38:41,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:38:41,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:38:41,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:38:41,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:38:41,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:38:41,371 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:38:41,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:38:41,371 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:38:41,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:38:41,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:38:41,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:38:41,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:38:41,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:38:41,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:38:41,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:38:41,374 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:38:41,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:38:41,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:38:41,374 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:38:41,374 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:38:41,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:38:41,375 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_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e0651820efa05b0d1173e869e8cdb7c85f212e339148a75ab7dde9c1235571e [2023-12-02 15:38:41,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:38:41,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:38:41,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:38:41,637 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:38:41,638 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:38:41,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-1.c [2023-12-02 15:38:44,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:38:44,898 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:38:44,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-1.c [2023-12-02 15:38:44,938 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/data/4507d0e0d/a71d238c79c14dea89467854ba923fff/FLAGf485d6c34 [2023-12-02 15:38:44,949 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/data/4507d0e0d/a71d238c79c14dea89467854ba923fff [2023-12-02 15:38:44,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:38:44,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:38:44,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:38:44,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:38:44,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:38:44,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:38:44" (1/1) ... [2023-12-02 15:38:44,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29aed768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:44, skipping insertion in model container [2023-12-02 15:38:44,960 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:38:44" (1/1) ... [2023-12-02 15:38:45,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:38:45,460 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_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-1.c[2266,2279] [2023-12-02 15:38:46,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:38:46,544 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:38:46,554 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/ctm.ok3.i","-S") [51] [2023-12-02 15:38:46,560 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_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/sv-benchmarks/c/seq-mthreaded/rekcba_ctm.3-1.c[2266,2279] [2023-12-02 15:38:47,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:38:47,317 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:38:47,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47 WrapperNode [2023-12-02 15:38:47,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:38:47,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:38:47,352 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:38:47,352 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:38:47,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:47,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:48,675 INFO L138 Inliner]: procedures = 101, calls = 11881, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 40247 [2023-12-02 15:38:48,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:38:48,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:38:48,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:38:48,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:38:48,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:48,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:49,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:49,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:49,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:49,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:50,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:50,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:50,408 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:38:50,409 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:38:50,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:38:50,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:38:50,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (1/1) ... [2023-12-02 15:38:50,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:38:50,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:38:50,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:38:50,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cb08f3c-75bf-48f8-bdef-2c0a27a05a2b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:38:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-12-02 15:38:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-12-02 15:38:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-12-02 15:38:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-12-02 15:38:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:38:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-12-02 15:38:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-12-02 15:38:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-12-02 15:38:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-12-02 15:38:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-12-02 15:38:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-12-02 15:38:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-12-02 15:38:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-12-02 15:38:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-12-02 15:38:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-12-02 15:38:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-12-02 15:38:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-12-02 15:38:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-12-02 15:38:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-12-02 15:38:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:38:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-02 15:38:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-02 15:38:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-12-02 15:38:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-12-02 15:38:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-12-02 15:38:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-12-02 15:38:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-12-02 15:38:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-12-02 15:38:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-12-02 15:38:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-12-02 15:38:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-12-02 15:38:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-12-02 15:38:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-12-02 15:38:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-12-02 15:38:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:38:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-12-02 15:38:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-12-02 15:38:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-12-02 15:38:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-12-02 15:38:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-12-02 15:38:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-12-02 15:38:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-12-02 15:38:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-12-02 15:38:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-12-02 15:38:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-12-02 15:38:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-12-02 15:38:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-12-02 15:38:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-12-02 15:38:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-12-02 15:38:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-12-02 15:38:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-12-02 15:38:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-12-02 15:38:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-12-02 15:38:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-12-02 15:38:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-12-02 15:38:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-12-02 15:38:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-12-02 15:38:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-12-02 15:38:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-12-02 15:38:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-12-02 15:38:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-12-02 15:38:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-12-02 15:38:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-12-02 15:38:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-12-02 15:38:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-12-02 15:38:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-12-02 15:38:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-12-02 15:38:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-12-02 15:38:50,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-12-02 15:38:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-12-02 15:38:50,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-12-02 15:38:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-12-02 15:38:50,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-12-02 15:38:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-12-02 15:38:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-12-02 15:38:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-12-02 15:38:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-12-02 15:38:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-12-02 15:38:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-12-02 15:38:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2023-12-02 15:38:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2023-12-02 15:38:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-12-02 15:38:50,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-12-02 15:38:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-12-02 15:38:50,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-12-02 15:38:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-12-02 15:38:50,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-12-02 15:38:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:38:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-12-02 15:38:50,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-12-02 15:38:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:38:50,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:38:51,925 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:38:51,928 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:42:55,106 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:44:10,353 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:44:10,353 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 15:44:10,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:44:10 BoogieIcfgContainer [2023-12-02 15:44:10,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:44:10,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:44:10,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:44:10,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:44:10,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:38:44" (1/3) ... [2023-12-02 15:44:10,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60af604e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:44:10, skipping insertion in model container [2023-12-02 15:44:10,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:47" (2/3) ... [2023-12-02 15:44:10,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60af604e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:44:10, skipping insertion in model container [2023-12-02 15:44:10,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:44:10" (3/3) ... [2023-12-02 15:44:10,367 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_ctm.3-1.c [2023-12-02 15:44:10,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:44:10,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:44:10,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:44:10,467 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;@38511d9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:44:10,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:44:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 1174 states, 759 states have (on average 1.364953886693017) internal successors, (1036), 783 states have internal predecessors, (1036), 370 states have call successors, (370), 43 states have call predecessors, (370), 43 states have return successors, (370), 360 states have call predecessors, (370), 370 states have call successors, (370) [2023-12-02 15:44:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 15:44:10,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:10,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:44:10,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:44:10,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1995303426, now seen corresponding path program 1 times [2023-12-02 15:44:10,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:44:10,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913359451] [2023-12-02 15:44:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:10,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms