./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/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_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/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_bd98dc95-7d8c-48a5-8528-964d1d4c8363/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 2d62eb188ec8009366dfdca221ff91e65711c28198c7f8ea6438b1bcf863cd3f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:56:06,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:56:06,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:56:06,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:56:06,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:56:06,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:56:06,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:56:06,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:56:06,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:56:06,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:56:06,813 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:56:06,814 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:56:06,814 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:56:06,815 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:56:06,815 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:56:06,816 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:56:06,816 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:56:06,817 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:56:06,817 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:56:06,818 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:56:06,818 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:56:06,821 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:56:06,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:56:06,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:56:06,823 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:56:06,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:56:06,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:56:06,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:56:06,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:56:06,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:56:06,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:56:06,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:56:06,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:56:06,826 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:56:06,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:56:06,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:56:06,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:56:06,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:56:06,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:56:06,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:56:06,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:56:06,828 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:56:06,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:56:06,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:56:06,829 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:56:06,829 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:56:06,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:56:06,829 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_bd98dc95-7d8c-48a5-8528-964d1d4c8363/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d62eb188ec8009366dfdca221ff91e65711c28198c7f8ea6438b1bcf863cd3f [2023-12-02 18:56:07,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:56:07,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:56:07,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:56:07,057 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:56:07,057 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:56:07,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-1.c [2023-12-02 18:56:09,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:56:10,272 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:56:10,273 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-1.c [2023-12-02 18:56:10,332 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/data/58e0231f5/315460791e1b4a66826bb29026abec11/FLAG6ebfcaae8 [2023-12-02 18:56:10,353 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/data/58e0231f5/315460791e1b4a66826bb29026abec11 [2023-12-02 18:56:10,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:56:10,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:56:10,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:56:10,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:56:10,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:56:10,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:56:10" (1/1) ... [2023-12-02 18:56:10,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3985c1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:10, skipping insertion in model container [2023-12-02 18:56:10,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:56:10" (1/1) ... [2023-12-02 18:56:10,581 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:56:10,810 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_bd98dc95-7d8c-48a5-8528-964d1d4c8363/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-1.c[2836,2849] [2023-12-02 18:56:11,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:56:11,860 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:56:11,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/aso.bug2.i","-S") [61] [2023-12-02 18:56:11,874 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_bd98dc95-7d8c-48a5-8528-964d1d4c8363/sv-benchmarks/c/seq-mthreaded/rekcba_aso.2.M4-1.c[2836,2849] [2023-12-02 18:56:12,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:56:12,781 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:56:12,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12 WrapperNode [2023-12-02 18:56:12,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:56:12,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:56:12,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:56:12,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:56:12,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:13,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:14,655 INFO L138 Inliner]: procedures = 63, calls = 19673, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 42980 [2023-12-02 18:56:14,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:56:14,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:56:14,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:56:14,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:56:14,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:14,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:15,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:15,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:15,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:16,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:16,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:16,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:16,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:56:16,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:56:16,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:56:16,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:56:16,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (1/1) ... [2023-12-02 18:56:16,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:56:16,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:56:16,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:56:16,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd98dc95-7d8c-48a5-8528-964d1d4c8363/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:56:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:56:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2023-12-02 18:56:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2023-12-02 18:56:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-12-02 18:56:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-12-02 18:56:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-12-02 18:56:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-12-02 18:56:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:56:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-12-02 18:56:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-12-02 18:56:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-12-02 18:56:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-12-02 18:56:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-12-02 18:56:16,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-12-02 18:56:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:56:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-12-02 18:56:16,484 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-12-02 18:56:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-12-02 18:56:16,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-12-02 18:56:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2023-12-02 18:56:16,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2023-12-02 18:56:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-12-02 18:56:16,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-12-02 18:56:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-12-02 18:56:16,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-12-02 18:56:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2023-12-02 18:56:16,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2023-12-02 18:56:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:56:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:56:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-02 18:56:16,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-02 18:56:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-12-02 18:56:16,486 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-12-02 18:56:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2023-12-02 18:56:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2023-12-02 18:56:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2023-12-02 18:56:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2023-12-02 18:56:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:56:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:56:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:56:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:56:16,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:56:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-12-02 18:56:16,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-12-02 18:56:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-12-02 18:56:16,488 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-12-02 18:56:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-12-02 18:56:16,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-12-02 18:56:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2023-12-02 18:56:16,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2023-12-02 18:56:18,262 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:56:18,265 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:56:57,018 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:56:58,171 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:56:58,172 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 18:56:58,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:56:58 BoogieIcfgContainer [2023-12-02 18:56:58,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:56:58,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:56:58,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:56:58,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:56:58,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:56:10" (1/3) ... [2023-12-02 18:56:58,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d11ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:56:58, skipping insertion in model container [2023-12-02 18:56:58,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:56:12" (2/3) ... [2023-12-02 18:56:58,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d11ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:56:58, skipping insertion in model container [2023-12-02 18:56:58,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:56:58" (3/3) ... [2023-12-02 18:56:58,188 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_aso.2.M4-1.c [2023-12-02 18:56:58,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:56:58,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:56:58,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:56:58,462 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;@fdec379, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:56:58,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:56:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 12804 states, 8264 states have (on average 1.306026137463698) internal successors, (10793), 8376 states have internal predecessors, (10793), 4517 states have call successors, (4517), 21 states have call predecessors, (4517), 21 states have return successors, (4517), 4515 states have call predecessors, (4517), 4517 states have call successors, (4517) [2023-12-02 18:56:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4794 [2023-12-02 18:56:58,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:56:58,995 INFO L195 NwaCegarLoop]: trace histogram [551, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:56:59,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:56:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash 391130207, now seen corresponding path program 1 times [2023-12-02 18:56:59,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:56:59,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45108855] [2023-12-02 18:56:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:56:59,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms