./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:11:21,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:11:21,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:11:21,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:11:21,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:11:21,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:11:21,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:11:21,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:11:21,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:11:21,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:11:21,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:11:21,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:11:21,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:11:21,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:11:21,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:11:21,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:11:21,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:11:21,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:11:21,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:11:21,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:11:21,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:11:21,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:11:21,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:11:21,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:11:21,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:11:21,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:11:21,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:11:21,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:11:21,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:11:21,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:11:21,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:11:21,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:11:21,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:11:21,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:11:21,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:11:21,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:11:21,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:11:21,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:11:21,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:11:21,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:11:21,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:11:21,333 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:11:21,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:11:21,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:11:21,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:11:21,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:11:21,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:11:21,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:11:21,357 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:11:21,357 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:11:21,357 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:11:21,357 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:11:21,357 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:11:21,357 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:11:21,358 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:11:21,358 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:11:21,358 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:11:21,358 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:11:21,358 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:11:21,359 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:11:21,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:11:21,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:11:21,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:11:21,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:11:21,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:11:21,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:11:21,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:11:21,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:11:21,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:11:21,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:11:21,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:11:21,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:11:21,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:11:21,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:11:21,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:11:21,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:11:21,362 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:11:21,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:11:21,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:11:21,363 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:11:21,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:11:21,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:11:21,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:11:21,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b [2022-12-14 05:11:21,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:11:21,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:11:21,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:11:21,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:11:21,548 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:11:21,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2022-12-14 05:11:24,108 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:11:24,297 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:11:24,297 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2022-12-14 05:11:24,308 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/data/a23a3a2bf/6296f49a3f434168be9000c1fac9c0ba/FLAGd7c0b0f12 [2022-12-14 05:11:24,319 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/data/a23a3a2bf/6296f49a3f434168be9000c1fac9c0ba [2022-12-14 05:11:24,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:11:24,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:11:24,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:11:24,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:11:24,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:11:24,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7daa14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24, skipping insertion in model container [2022-12-14 05:11:24,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:11:24,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:11:24,482 WARN L237 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_88047937-d694-4f18-8e2d-49b7502fedee/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c[1937,1950] [2022-12-14 05:11:24,522 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:11:24,522 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:11:24,524 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 05:11:24,527 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:11:24,527 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:11:24,527 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 05:11:24,528 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:11:24,528 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:11:24,537 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 05:11:24,537 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 05:11:24,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:11:24,670 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:11:24,680 WARN L237 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_88047937-d694-4f18-8e2d-49b7502fedee/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c[1937,1950] [2022-12-14 05:11:24,692 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:11:24,692 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:11:24,693 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 05:11:24,694 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:11:24,694 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:11:24,695 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 05:11:24,695 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:11:24,695 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:11:24,698 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 05:11:24,698 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 05:11:24,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:11:24,817 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:11:24,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24 WrapperNode [2022-12-14 05:11:24,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:11:24,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:11:24,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:11:24,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:11:24,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,919 INFO L138 Inliner]: procedures = 58, calls = 1758, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3840 [2022-12-14 05:11:24,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:11:24,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:11:24,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:11:24,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:11:24,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:24,995 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:25,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:25,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:11:25,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:11:25,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:11:25,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:11:25,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (1/1) ... [2022-12-14 05:11:25,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:11:25,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:11:25,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:11:25,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88047937-d694-4f18-8e2d-49b7502fedee/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:11:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:11:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 05:11:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 05:11:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 05:11:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 05:11:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:11:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 05:11:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 05:11:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 05:11:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 05:11:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 05:11:25,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 05:11:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:11:25,062 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 05:11:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 05:11:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 05:11:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 05:11:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 05:11:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 05:11:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 05:11:25,063 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 05:11:25,063 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 05:11:25,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 05:11:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:11:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:11:25,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:11:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 05:11:25,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 05:11:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 05:11:25,064 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 05:11:25,064 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 05:11:25,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 05:11:25,357 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:11:25,359 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:11:31,100 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:11:31,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:11:31,232 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:11:31,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:31 BoogieIcfgContainer [2022-12-14 05:11:31,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:11:31,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:11:31,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:11:31,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:11:31,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:11:24" (1/3) ... [2022-12-14 05:11:31,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb5d10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:31, skipping insertion in model container [2022-12-14 05:11:31,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:24" (2/3) ... [2022-12-14 05:11:31,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb5d10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:31, skipping insertion in model container [2022-12-14 05:11:31,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:31" (3/3) ... [2022-12-14 05:11:31,241 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-2.c [2022-12-14 05:11:31,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:11:31,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:11:31,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:11:31,312 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=LoopsAndPotentialCycles, 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;@27151863, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:11:31,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:11:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 1151 states, 714 states have (on average 1.2857142857142858) internal successors, (918), 746 states have internal predecessors, (918), 419 states have call successors, (419), 16 states have call predecessors, (419), 16 states have return successors, (419), 417 states have call predecessors, (419), 419 states have call successors, (419) [2022-12-14 05:11:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2022-12-14 05:11:31,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:11:31,355 INFO L195 NwaCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:11:31,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:11:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:11:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2015252477, now seen corresponding path program 1 times [2022-12-14 05:11:31,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:11:31,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763571672] [2022-12-14 05:11:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:11:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms