./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.4.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.4.M1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX --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 8e24bd3d387a8dc9f49a28dec971e10112e01621b85a87c6eb3a0cec4db0bef2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:45:05,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:45:05,636 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:45:05,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:45:05,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:45:05,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:45:05,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:45:05,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:45:05,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:45:05,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:45:05,676 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:45:05,676 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:45:05,677 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:45:05,678 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:45:05,678 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:45:05,679 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:45:05,679 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:45:05,680 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:45:05,681 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:45:05,681 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:45:05,682 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:45:05,682 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:45:05,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:45:05,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:45:05,684 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:45:05,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:45:05,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:45:05,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:45:05,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:45:05,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:45:05,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:45:05,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:45:05,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:45:05,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:45:05,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:45:05,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:45:05,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:45:05,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:45:05,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:45:05,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:45:05,694 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:45:05,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:45:05,695 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:45:05,696 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:45:05,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:45:05,697 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_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e24bd3d387a8dc9f49a28dec971e10112e01621b85a87c6eb3a0cec4db0bef2 [2023-11-12 00:45:05,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:45:06,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:45:06,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:45:06,007 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:45:06,007 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:45:06,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.4.M1.c [2023-11-12 00:45:09,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:45:09,834 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:45:09,837 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/sv-benchmarks/c/seq-mthreaded/rekcba_aso.4.M1.c [2023-11-12 00:45:09,874 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/data/7200a1da2/5fe6b26f8d0a4188baa6363f0a3e8c50/FLAGde05d4848 [2023-11-12 00:45:09,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/data/7200a1da2/5fe6b26f8d0a4188baa6363f0a3e8c50 [2023-11-12 00:45:09,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:45:09,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:45:09,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:45:09,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:45:09,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:45:09,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:45:09" (1/1) ... [2023-11-12 00:45:09,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9a2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:09, skipping insertion in model container [2023-11-12 00:45:09,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:45:09" (1/1) ... [2023-11-12 00:45:10,025 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:45:10,203 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_71c5f298-3d21-405b-96f6-6d6a80aada93/sv-benchmarks/c/seq-mthreaded/rekcba_aso.4.M1.c[2061,2074] [2023-11-12 00:45:10,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:45:10,736 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:45:10,746 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"/tmp/aaaa/aso.bug4.i","-S") [44] [2023-11-12 00:45:10,752 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_71c5f298-3d21-405b-96f6-6d6a80aada93/sv-benchmarks/c/seq-mthreaded/rekcba_aso.4.M1.c[2061,2074] [2023-11-12 00:45:11,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:45:11,149 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:45:11,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11 WrapperNode [2023-11-12 00:45:11,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:45:11,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:45:11,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:45:11,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:45:11,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,531 INFO L138 Inliner]: procedures = 72, calls = 2680, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 5900 [2023-11-12 00:45:11,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:45:11,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:45:11,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:45:11,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:45:11,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:45:11,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:45:11,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:45:11,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:45:11,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (1/1) ... [2023-11-12 00:45:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:45:11,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:45:11,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:45:12,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c5f298-3d21-405b-96f6-6d6a80aada93/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:45:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:45:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2023-11-12 00:45:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2023-11-12 00:45:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2023-11-12 00:45:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2023-11-12 00:45:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2023-11-12 00:45:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2023-11-12 00:45:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:45:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2023-11-12 00:45:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2023-11-12 00:45:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2023-11-12 00:45:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2023-11-12 00:45:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2023-11-12 00:45:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2023-11-12 00:45:12,045 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2023-11-12 00:45:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2023-11-12 00:45:12,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:45:12,045 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2023-11-12 00:45:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2023-11-12 00:45:12,045 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2023-11-12 00:45:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2023-11-12 00:45:12,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2023-11-12 00:45:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2023-11-12 00:45:12,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2023-11-12 00:45:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2023-11-12 00:45:12,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-12 00:45:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2023-11-12 00:45:12,046 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-12 00:45:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2023-11-12 00:45:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2023-11-12 00:45:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2023-11-12 00:45:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:45:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:45:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-12 00:45:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-12 00:45:12,047 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2023-11-12 00:45:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2023-11-12 00:45:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2023-11-12 00:45:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2023-11-12 00:45:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2023-11-12 00:45:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2023-11-12 00:45:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:45:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:45:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:45:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:45:12,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:45:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2023-11-12 00:45:12,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2023-11-12 00:45:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2023-11-12 00:45:12,049 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2023-11-12 00:45:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2023-11-12 00:45:12,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2023-11-12 00:45:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2023-11-12 00:45:12,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2023-11-12 00:45:12,558 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:45:12,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:45:47,376 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:45:47,954 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:45:47,954 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:45:47,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:45:47 BoogieIcfgContainer [2023-11-12 00:45:47,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:45:47,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:45:47,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:45:47,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:45:47,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:45:09" (1/3) ... [2023-11-12 00:45:47,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9a1bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:45:47, skipping insertion in model container [2023-11-12 00:45:47,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:45:11" (2/3) ... [2023-11-12 00:45:47,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9a1bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:45:47, skipping insertion in model container [2023-11-12 00:45:47,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:45:47" (3/3) ... [2023-11-12 00:45:47,972 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_aso.4.M1.c [2023-11-12 00:45:47,990 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:45:47,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:45:48,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:45:48,095 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;@20a6453d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:45:48,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:45:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 1576 states, 956 states have (on average 1.25836820083682) internal successors, (1203), 987 states have internal predecessors, (1203), 595 states have call successors, (595), 23 states have call predecessors, (595), 23 states have return successors, (595), 593 states have call predecessors, (595), 595 states have call successors, (595) [2023-11-12 00:45:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2023-11-12 00:45:48,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:48,232 INFO L195 NwaCegarLoop]: trace histogram [241, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:45:48,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:48,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:48,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1968552564, now seen corresponding path program 1 times [2023-11-12 00:45:48,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:45:48,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830526118] [2023-11-12 00:45:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:48,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms