./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/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_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/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_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/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 a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:07:59,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:07:59,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:07:59,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:07:59,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:07:59,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:07:59,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:07:59,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:07:59,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:07:59,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:07:59,637 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:07:59,638 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:07:59,639 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:07:59,639 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:07:59,640 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:07:59,641 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:07:59,641 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:07:59,642 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:07:59,642 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:07:59,643 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:07:59,643 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:07:59,644 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:07:59,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:07:59,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:07:59,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:07:59,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:07:59,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:07:59,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:07:59,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:07:59,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:07:59,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:07:59,654 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:07:59,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:07:59,655 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:07:59,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:07:59,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:07:59,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:07:59,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:07:59,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:07:59,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:07:59,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:07:59,658 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:07:59,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:07:59,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:07:59,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:07:59,659 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:07:59,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:07:59,660 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_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 [2023-11-23 21:08:00,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:00,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:00,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:00,069 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:00,070 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:00,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2023-11-23 21:08:03,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:03,803 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:03,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2023-11-23 21:08:03,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/data/0da135a48/5b53631aa25b4f478a9abc77809aeb29/FLAG56beb22bc [2023-11-23 21:08:03,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/data/0da135a48/5b53631aa25b4f478a9abc77809aeb29 [2023-11-23 21:08:03,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:03,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:03,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:03,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:03,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:03,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e14b0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:03, skipping insertion in model container [2023-11-23 21:08:03,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:03" (1/1) ... [2023-11-23 21:08:03,982 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:04,270 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_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c[1871,1884] [2023-11-23 21:08:05,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:05,093 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:05,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/ctm.bug3.i","-S") [42] [2023-11-23 21:08:05,108 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_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c[1871,1884] [2023-11-23 21:08:05,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:05,460 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:05,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05 WrapperNode [2023-11-23 21:08:05,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:05,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:05,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:05,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:05,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:05,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:05,918 INFO L138 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8541 [2023-11-23 21:08:05,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:05,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:05,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:05,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:05,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:05,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:05,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:05,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:06,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:06,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:06,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:06,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:06,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:06,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:06,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:06,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:06,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (1/1) ... [2023-11-23 21:08:06,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:06,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:06,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:06,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c5d6ba-baac-4259-b6d1-2ad3d5825db1/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2023-11-23 21:08:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2023-11-23 21:08:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2023-11-23 21:08:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2023-11-23 21:08:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:08:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2023-11-23 21:08:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2023-11-23 21:08:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-23 21:08:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-23 21:08:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-11-23 21:08:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-11-23 21:08:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2023-11-23 21:08:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2023-11-23 21:08:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2023-11-23 21:08:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2023-11-23 21:08:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2023-11-23 21:08:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2023-11-23 21:08:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2023-11-23 21:08:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2023-11-23 21:08:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2023-11-23 21:08:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2023-11-23 21:08:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:08:06,590 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-23 21:08:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-23 21:08:06,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2023-11-23 21:08:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2023-11-23 21:08:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2023-11-23 21:08:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2023-11-23 21:08:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2023-11-23 21:08:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2023-11-23 21:08:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2023-11-23 21:08:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2023-11-23 21:08:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2023-11-23 21:08:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2023-11-23 21:08:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-23 21:08:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-23 21:08:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-23 21:08:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-23 21:08:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2023-11-23 21:08:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2023-11-23 21:08:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2023-11-23 21:08:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2023-11-23 21:08:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2023-11-23 21:08:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2023-11-23 21:08:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-23 21:08:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-23 21:08:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2023-11-23 21:08:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2023-11-23 21:08:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-23 21:08:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-23 21:08:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2023-11-23 21:08:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2023-11-23 21:08:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2023-11-23 21:08:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2023-11-23 21:08:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-11-23 21:08:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-11-23 21:08:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2023-11-23 21:08:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2023-11-23 21:08:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2023-11-23 21:08:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2023-11-23 21:08:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2023-11-23 21:08:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2023-11-23 21:08:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-23 21:08:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2023-11-23 21:08:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2023-11-23 21:08:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2023-11-23 21:08:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2023-11-23 21:08:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2023-11-23 21:08:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2023-11-23 21:08:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2023-11-23 21:08:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2023-11-23 21:08:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2023-11-23 21:08:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2023-11-23 21:08:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2023-11-23 21:08:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2023-11-23 21:08:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2023-11-23 21:08:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2023-11-23 21:08:06,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2023-11-23 21:08:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2023-11-23 21:08:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2023-11-23 21:08:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2023-11-23 21:08:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2023-11-23 21:08:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2023-11-23 21:08:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2023-11-23 21:08:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2023-11-23 21:08:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2023-11-23 21:08:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2023-11-23 21:08:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2023-11-23 21:08:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2023-11-23 21:08:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2023-11-23 21:08:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:07,170 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:07,173 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:30,348 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:38,355 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:38,356 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:08:38,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:38 BoogieIcfgContainer [2023-11-23 21:08:38,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:38,361 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:38,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:38,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:38,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:03" (1/3) ... [2023-11-23 21:08:38,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6975d7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:38, skipping insertion in model container [2023-11-23 21:08:38,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:05" (2/3) ... [2023-11-23 21:08:38,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6975d7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:38, skipping insertion in model container [2023-11-23 21:08:38,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:38" (3/3) ... [2023-11-23 21:08:38,369 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-2.c [2023-11-23 21:08:38,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:38,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:08:38,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:38,484 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;@10d992d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:38,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:08:38,494 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 21:08:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:08:38,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:38,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:38,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:38,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:38,511 INFO L85 PathProgramCache]: Analyzing trace with hash -214657370, now seen corresponding path program 1 times [2023-11-23 21:08:38,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:38,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291207838] [2023-11-23 21:08:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms