./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.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_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/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_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/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_7ef1f530-c566-4846-a212-d151abbbcf39/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 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:03,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:04,013 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:33:04,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:04,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:04,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:04,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:04,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:04,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:04,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:04,087 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:04,089 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:04,090 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:04,092 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:33:04,093 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:04,093 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:04,094 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:33:04,095 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:33:04,096 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:04,096 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:33:04,099 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:33:04,100 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:33:04,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:04,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:33:04,103 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:33:04,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:33:04,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:33:04,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:04,106 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:33:04,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:04,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:33:04,109 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:33:04,109 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:33:04,109 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:04,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:04,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:04,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:04,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:04,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:04,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:04,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:33:04,113 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:33:04,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:33:04,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:04,115 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:33:04,115 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:04,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:04,116 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_7ef1f530-c566-4846-a212-d151abbbcf39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c11dfbc24d8e2936a0720b93d6e580e096b076c7149ef4cbc8369f1ef818941 [2023-11-23 20:33:04,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:04,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:04,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:04,590 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:04,590 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:04,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2023-11-23 20:33:08,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:33:08,898 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:33:08,899 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c [2023-11-23 20:33:08,946 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/data/aebe8cafd/7d6dc97ab1eb4e56bf389300b14637b4/FLAG3b234d964 [2023-11-23 20:33:08,967 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/data/aebe8cafd/7d6dc97ab1eb4e56bf389300b14637b4 [2023-11-23 20:33:08,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:33:08,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:33:08,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:08,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:33:08,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:33:08,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:08" (1/1) ... [2023-11-23 20:33:08,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1074b73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:08, skipping insertion in model container [2023-11-23 20:33:08,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:33:08" (1/1) ... [2023-11-23 20:33:09,124 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:33:09,435 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_7ef1f530-c566-4846-a212-d151abbbcf39/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c[1870,1883] [2023-11-23 20:33:10,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:10,505 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:33:10,519 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/ctm.ok3.i","-S") [42] [2023-11-23 20:33:10,533 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_7ef1f530-c566-4846-a212-d151abbbcf39/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-1.c[1870,1883] [2023-11-23 20:33:10,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:33:11,065 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:33:11,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11 WrapperNode [2023-11-23 20:33:11,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:33:11,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:11,069 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:33:11,069 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:33:11,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:11,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:11,653 INFO L138 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8541 [2023-11-23 20:33:11,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:33:11,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:33:11,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:33:11,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:33:11,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:11,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:11,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:11,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:12,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:12,149 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:12,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:12,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:12,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:33:12,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:33:12,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:33:12,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:33:12,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (1/1) ... [2023-11-23 20:33:12,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:12,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:33:12,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:33:12,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef1f530-c566-4846-a212-d151abbbcf39/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:33:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-11-23 20:33:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-11-23 20:33:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-11-23 20:33:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-11-23 20:33:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:33:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-11-23 20:33:12,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-11-23 20:33:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-23 20:33:12,372 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-23 20:33:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-11-23 20:33:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-11-23 20:33:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-11-23 20:33:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-11-23 20:33:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-11-23 20:33:12,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-11-23 20:33:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-11-23 20:33:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-11-23 20:33:12,375 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-11-23 20:33:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-11-23 20:33:12,375 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-11-23 20:33:12,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-11-23 20:33:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:33:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-23 20:33:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-23 20:33:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-11-23 20:33:12,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-11-23 20:33:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-11-23 20:33:12,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-11-23 20:33:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-11-23 20:33:12,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-11-23 20:33:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-11-23 20:33:12,379 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-11-23 20:33:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-11-23 20:33:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-11-23 20:33:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-23 20:33:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-23 20:33:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:33:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-23 20:33:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-23 20:33:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-11-23 20:33:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-11-23 20:33:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-11-23 20:33:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-11-23 20:33:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-11-23 20:33:12,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-11-23 20:33:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-23 20:33:12,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-23 20:33:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-11-23 20:33:12,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-11-23 20:33:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-23 20:33:12,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-23 20:33:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-11-23 20:33:12,383 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-11-23 20:33:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-11-23 20:33:12,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-11-23 20:33:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-11-23 20:33:12,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-11-23 20:33:12,385 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-11-23 20:33:12,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-11-23 20:33:12,386 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-11-23 20:33:12,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-11-23 20:33:12,387 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-11-23 20:33:12,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-11-23 20:33:12,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-23 20:33:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-23 20:33:12,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-11-23 20:33:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-11-23 20:33:12,388 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-11-23 20:33:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-11-23 20:33:12,389 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-11-23 20:33:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-11-23 20:33:12,390 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-11-23 20:33:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-11-23 20:33:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-11-23 20:33:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-11-23 20:33:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-11-23 20:33:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-11-23 20:33:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-11-23 20:33:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-11-23 20:33:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-11-23 20:33:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-11-23 20:33:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2023-11-23 20:33:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2023-11-23 20:33:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-11-23 20:33:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-11-23 20:33:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-11-23 20:33:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-11-23 20:33:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-11-23 20:33:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-11-23 20:33:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:33:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-11-23 20:33:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-11-23 20:33:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:33:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:33:13,108 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:33:13,112 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:33:38,419 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:33:45,769 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:33:45,769 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 20:33:45,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:45 BoogieIcfgContainer [2023-11-23 20:33:45,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:33:45,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:33:45,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:33:45,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:33:45,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:33:08" (1/3) ... [2023-11-23 20:33:45,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5841ba48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:45, skipping insertion in model container [2023-11-23 20:33:45,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:33:11" (2/3) ... [2023-11-23 20:33:45,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5841ba48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:33:45, skipping insertion in model container [2023-11-23 20:33:45,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:33:45" (3/3) ... [2023-11-23 20:33:45,931 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-1.c [2023-11-23 20:33:45,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:33:45,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:33:46,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:33:46,077 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;@5da21e4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:33:46,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:33:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 611 states have (on average 1.3846153846153846) internal successors, (846), 635 states have internal predecessors, (846), 306 states have call successors, (306), 44 states have call predecessors, (306), 44 states have return successors, (306), 296 states have call predecessors, (306), 306 states have call successors, (306) [2023-11-23 20:33:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 20:33:46,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:33:46,105 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 20:33:46,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:33:46,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:33:46,114 INFO L85 PathProgramCache]: Analyzing trace with hash -214657370, now seen corresponding path program 1 times [2023-11-23 20:33:46,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:33:46,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683743785] [2023-11-23 20:33:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:33:46,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms