./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.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_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/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_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/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_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/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 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e --- 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 03:19:11,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 03:19:11,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 03:19:11,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 03:19:11,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 03:19:11,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 03:19:11,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 03:19:11,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 03:19:11,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 03:19:11,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 03:19:11,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 03:19:11,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 03:19:11,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 03:19:11,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 03:19:11,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 03:19:11,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 03:19:11,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 03:19:11,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 03:19:11,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 03:19:11,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 03:19:11,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 03:19:11,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 03:19:11,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 03:19:11,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 03:19:11,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 03:19:11,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 03:19:11,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 03:19:11,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 03:19:11,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 03:19:11,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 03:19:11,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 03:19:11,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 03:19:11,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 03:19:11,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 03:19:11,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 03:19:11,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 03:19:11,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 03:19:11,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 03:19:11,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 03:19:11,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 03:19:11,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 03:19:11,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 03:19:11,747 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 03:19:11,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 03:19:11,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 03:19:11,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 03:19:11,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 03:19:11,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 03:19:11,749 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 03:19:11,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 03:19:11,749 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 03:19:11,749 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 03:19:11,750 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 03:19:11,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 03:19:11,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 03:19:11,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 03:19:11,750 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 03:19:11,750 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 03:19:11,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 03:19:11,751 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 03:19:11,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 03:19:11,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 03:19:11,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 03:19:11,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 03:19:11,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 03:19:11,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 03:19:11,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 03:19:11,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 03:19:11,753 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 03:19:11,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 03:19:11,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 03:19:11,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 03:19:11,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 03:19:11,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 03:19:11,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:19:11,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 03:19:11,754 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 03:19:11,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 03:19:11,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 03:19:11,754 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 03:19:11,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 03:19:11,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 03:19:11,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 03:19:11,755 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_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0faf19803047b9d51fb440293a8075aae4a757b1a8a36a5355760a1968a70e [2022-12-14 03:19:11,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 03:19:11,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 03:19:11,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 03:19:11,990 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 03:19:11,990 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 03:19:11,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2022-12-14 03:19:14,482 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 03:19:14,734 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 03:19:14,735 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c [2022-12-14 03:19:14,749 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/data/42a5db69c/fb49f9bcd0704c0daecdd79f5306321e/FLAG62ed99e30 [2022-12-14 03:19:15,085 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/data/42a5db69c/fb49f9bcd0704c0daecdd79f5306321e [2022-12-14 03:19:15,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 03:19:15,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 03:19:15,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 03:19:15,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 03:19:15,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 03:19:15,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af44e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15, skipping insertion in model container [2022-12-14 03:19:15,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 03:19:15,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 03:19:15,288 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_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c[1510,1523] [2022-12-14 03:19:15,346 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 03:19:15,346 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 03:19:15,348 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 03:19:15,353 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 03:19:15,354 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 03:19:15,354 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 03:19:15,355 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 03:19:15,355 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 03:19:15,370 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 03:19:15,371 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 03:19:15,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:19:15,537 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 03:19:15,547 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_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/sv-benchmarks/c/seq-mthreaded/rekh_nxt.1.M4-1.c[1510,1523] [2022-12-14 03:19:15,559 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 03:19:15,559 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 03:19:15,560 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 03:19:15,562 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 03:19:15,562 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 03:19:15,562 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 03:19:15,563 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 03:19:15,563 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 03:19:15,566 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 03:19:15,567 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 03:19:15,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 03:19:15,685 INFO L208 MainTranslator]: Completed translation [2022-12-14 03:19:15,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15 WrapperNode [2022-12-14 03:19:15,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 03:19:15,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 03:19:15,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 03:19:15,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 03:19:15,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,804 INFO L138 Inliner]: procedures = 55, calls = 2046, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 3968 [2022-12-14 03:19:15,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 03:19:15,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 03:19:15,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 03:19:15,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 03:19:15,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,941 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 03:19:15,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 03:19:15,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 03:19:15,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 03:19:15,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (1/1) ... [2022-12-14 03:19:15,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 03:19:15,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 03:19:15,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 03:19:15,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864f2d9f-7bf1-49ab-afd0-5bdd0faa6773/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 03:19:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 03:19:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 03:19:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 03:19:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 03:19:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 03:19:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 03:19:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 03:19:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 03:19:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 03:19:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 03:19:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 03:19:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 03:19:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 03:19:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 03:19:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 03:19:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 03:19:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 03:19:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 03:19:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 03:19:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 03:19:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 03:19:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 03:19:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-12-14 03:19:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-12-14 03:19:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 03:19:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 03:19:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 03:19:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 03:19:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 03:19:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 03:19:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 03:19:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 03:19:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 03:19:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 03:19:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 03:19:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 03:19:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 03:19:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 03:19:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 03:19:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 03:19:16,335 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 03:19:16,337 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 03:19:23,935 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 03:19:24,047 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 03:19:24,047 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 03:19:24,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:24 BoogieIcfgContainer [2022-12-14 03:19:24,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 03:19:24,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 03:19:24,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 03:19:24,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 03:19:24,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:19:15" (1/3) ... [2022-12-14 03:19:24,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f55eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:19:24, skipping insertion in model container [2022-12-14 03:19:24,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:19:15" (2/3) ... [2022-12-14 03:19:24,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f55eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:19:24, skipping insertion in model container [2022-12-14 03:19:24,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:19:24" (3/3) ... [2022-12-14 03:19:24,057 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.1.M4-1.c [2022-12-14 03:19:24,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 03:19:24,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 03:19:24,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 03:19:24,155 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;@1563df48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 03:19:24,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 03:19:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 1565 states, 934 states have (on average 1.234475374732334) internal successors, (1153), 939 states have internal predecessors, (1153), 613 states have call successors, (613), 16 states have call predecessors, (613), 16 states have return successors, (613), 611 states have call predecessors, (613), 613 states have call successors, (613) [2022-12-14 03:19:24,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6208 [2022-12-14 03:19:24,513 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 03:19:24,515 INFO L195 NwaCegarLoop]: trace histogram [964, 108, 108, 108, 108, 108, 96, 96, 96, 96, 96, 96, 96, 96, 96, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 03:19:24,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 03:19:24,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 03:19:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1587090831, now seen corresponding path program 1 times [2022-12-14 03:19:24,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 03:19:24,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344044706] [2022-12-14 03:19:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 03:19:24,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms