./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.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_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/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_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/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_d39a2feb-5e33-4043-adcf-fab8c932612e/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 bfe38d632dc9d05bd2dc6fdd28950c1547024966bcab88b0922592f6fd40a86e --- 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 05:38:46,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:38:46,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:38:46,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:38:46,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:38:46,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:38:46,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:38:46,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:38:46,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:38:46,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:38:46,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:38:46,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:38:46,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:38:46,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:38:46,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:38:46,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:38:46,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:38:46,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:38:46,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:38:46,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:38:46,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:38:46,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:38:46,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:38:46,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:38:46,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:38:46,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:38:46,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:38:46,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:38:46,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:38:46,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:38:46,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:38:46,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:38:46,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:38:46,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:38:46,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:38:46,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:38:46,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:38:46,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:38:46,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:38:46,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:38:46,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:38:46,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:38:46,553 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:38:46,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:38:46,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:38:46,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:38:46,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:38:46,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:38:46,555 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:38:46,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:38:46,555 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:38:46,559 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:38:46,559 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:38:46,559 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:38:46,559 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:38:46,560 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:38:46,560 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:38:46,560 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:38:46,560 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:38:46,560 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:38:46,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:38:46,561 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:38:46,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:38:46,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:38:46,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:38:46,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:38:46,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:38:46,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:38:46,562 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:38:46,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:38:46,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:38:46,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:38:46,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:38:46,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:38:46,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:38:46,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:38:46,563 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:38:46,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:38:46,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:38:46,564 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:38:46,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:38:46,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:38:46,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:38:46,565 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_d39a2feb-5e33-4043-adcf-fab8c932612e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfe38d632dc9d05bd2dc6fdd28950c1547024966bcab88b0922592f6fd40a86e [2022-12-14 05:38:46,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:38:46,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:38:46,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:38:46,758 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:38:46,758 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:38:46,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c [2022-12-14 05:38:49,318 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:38:49,542 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:38:49,543 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c [2022-12-14 05:38:49,557 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/data/99046764b/6d93d2af2f8346c0b433f3ae908dbb8c/FLAG015f60e58 [2022-12-14 05:38:49,571 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/data/99046764b/6d93d2af2f8346c0b433f3ae908dbb8c [2022-12-14 05:38:49,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:38:49,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:38:49,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:38:49,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:38:49,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:38:49,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:38:49" (1/1) ... [2022-12-14 05:38:49,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3782d5e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:49, skipping insertion in model container [2022-12-14 05:38:49,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:38:49" (1/1) ... [2022-12-14 05:38:49,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:38:49,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:38:49,780 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_d39a2feb-5e33-4043-adcf-fab8c932612e/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c[2020,2033] [2022-12-14 05:38:49,834 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:38:49,834 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:38:49,836 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 05:38:49,839 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:38:49,840 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:38:49,840 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 05:38:49,840 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:38:49,841 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:38:49,849 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 05:38:49,849 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 05:38:50,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:38:50,019 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:38:50,034 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_d39a2feb-5e33-4043-adcf-fab8c932612e/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-1.c[2020,2033] [2022-12-14 05:38:50,049 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:38:50,050 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:38:50,051 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 05:38:50,053 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:38:50,053 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:38:50,053 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 05:38:50,054 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:38:50,054 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:38:50,057 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 05:38:50,057 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 05:38:50,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:38:50,203 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:38:50,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50 WrapperNode [2022-12-14 05:38:50,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:38:50,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:38:50,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:38:50,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:38:50,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,365 INFO L138 Inliner]: procedures = 62, calls = 1929, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4123 [2022-12-14 05:38:50,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:38:50,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:38:50,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:38:50,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:38:50,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:38:50,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:38:50,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:38:50,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:38:50,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (1/1) ... [2022-12-14 05:38:50,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:38:50,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:38:50,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:38:50,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39a2feb-5e33-4043-adcf-fab8c932612e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:38:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:38:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 05:38:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 05:38:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 05:38:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 05:38:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:38:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 05:38:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 05:38:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 05:38:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 05:38:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-12-14 05:38:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-12-14 05:38:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 05:38:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 05:38:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:38:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 05:38:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 05:38:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 05:38:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 05:38:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 05:38:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 05:38:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 05:38:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 05:38:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:38:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 05:38:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 05:38:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:38:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 05:38:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 05:38:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 05:38:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 05:38:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-12-14 05:38:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-12-14 05:38:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 05:38:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 05:38:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:38:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:38:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:38:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 05:38:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 05:38:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 05:38:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 05:38:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 05:38:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 05:38:50,848 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:38:50,851 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:38:56,960 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:38:57,101 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:38:57,101 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:38:57,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:38:57 BoogieIcfgContainer [2022-12-14 05:38:57,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:38:57,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:38:57,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:38:57,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:38:57,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:38:49" (1/3) ... [2022-12-14 05:38:57,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a79d8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:38:57, skipping insertion in model container [2022-12-14 05:38:57,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:38:50" (2/3) ... [2022-12-14 05:38:57,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a79d8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:38:57, skipping insertion in model container [2022-12-14 05:38:57,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:38:57" (3/3) ... [2022-12-14 05:38:57,111 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-1.c [2022-12-14 05:38:57,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:38:57,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:38:57,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:38:57,182 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;@75e320e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:38:57,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:38:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 1236 states, 761 states have (on average 1.2772667542706964) internal successors, (972), 793 states have internal predecessors, (972), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) [2022-12-14 05:38:57,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-12-14 05:38:57,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:38:57,232 INFO L195 NwaCegarLoop]: trace histogram [111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:57,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:38:57,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:38:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1513484241, now seen corresponding path program 1 times [2022-12-14 05:38:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:38:57,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386440782] [2022-12-14 05:38:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:38:57,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms