./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.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_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/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_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/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_80e50485-79f4-45ee-855f-b553c697cf65/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 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- 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 10:20:05,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:20:05,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:20:05,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:20:05,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:20:05,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:20:05,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:20:05,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:20:05,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:20:05,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:20:05,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:20:05,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:20:05,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:20:05,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:20:05,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:20:05,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:20:05,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:20:05,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:20:05,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:20:05,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:20:05,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:20:05,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:20:05,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:20:05,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:20:05,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:20:05,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:20:05,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:20:05,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:20:05,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:20:05,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:20:05,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:20:05,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:20:05,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:20:05,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:20:05,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:20:05,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:20:05,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:20:05,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:20:05,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:20:05,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:20:05,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:20:05,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:20:05,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:20:05,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:20:05,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:20:05,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:20:05,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:20:05,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:20:05,971 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:20:05,972 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:20:05,972 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:20:05,972 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:20:05,972 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:20:05,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:20:05,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:20:05,972 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:20:05,972 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:20:05,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:20:05,973 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:20:05,973 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:20:05,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:20:05,973 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:20:05,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:20:05,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:20:05,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:20:05,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:20:05,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:20:05,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:20:05,975 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:20:05,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:20:05,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:20:05,975 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:20:05,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:20:05,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:20:05,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:20:05,976 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_80e50485-79f4-45ee-855f-b553c697cf65/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2022-12-14 10:20:06,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:20:06,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:20:06,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:20:06,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:20:06,161 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:20:06,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2022-12-14 10:20:08,724 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:20:08,965 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:20:08,965 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2022-12-14 10:20:08,979 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/data/18452b019/cd7459e9aa7648a696466abb63798565/FLAGe37054915 [2022-12-14 10:20:09,292 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/data/18452b019/cd7459e9aa7648a696466abb63798565 [2022-12-14 10:20:09,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:20:09,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:20:09,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:20:09,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:20:09,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:20:09,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a04325e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09, skipping insertion in model container [2022-12-14 10:20:09,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:20:09,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:20:09,457 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_80e50485-79f4-45ee-855f-b553c697cf65/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2022-12-14 10:20:09,496 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 10:20:09,496 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 10:20:09,498 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 10:20:09,501 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 10:20:09,502 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 10:20:09,502 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 10:20:09,502 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 10:20:09,503 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 10:20:09,512 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 10:20:09,513 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 10:20:09,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:20:09,645 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:20:09,654 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_80e50485-79f4-45ee-855f-b553c697cf65/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2022-12-14 10:20:09,667 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 10:20:09,667 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 10:20:09,668 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 10:20:09,670 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 10:20:09,670 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 10:20:09,670 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 10:20:09,670 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 10:20:09,671 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 10:20:09,674 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 10:20:09,675 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 10:20:09,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:20:09,779 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:20:09,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09 WrapperNode [2022-12-14 10:20:09,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:20:09,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:20:09,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:20:09,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:20:09,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,890 INFO L138 Inliner]: procedures = 57, calls = 1672, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3715 [2022-12-14 10:20:09,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:20:09,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:20:09,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:20:09,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:20:09,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,974 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:20:09,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:20:09,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:20:09,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:20:09,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:10,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:20:10,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:20:10,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:20:10,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e50485-79f4-45ee-855f-b553c697cf65/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:20:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:20:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 10:20:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 10:20:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 10:20:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 10:20:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:20:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 10:20:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 10:20:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 10:20:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 10:20:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 10:20:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 10:20:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:20:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 10:20:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 10:20:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 10:20:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 10:20:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 10:20:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 10:20:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 10:20:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 10:20:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:20:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 10:20:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 10:20:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:20:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 10:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 10:20:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:20:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:20:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:20:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 10:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 10:20:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 10:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 10:20:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 10:20:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 10:20:10,358 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:20:10,359 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:20:16,181 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:20:16,258 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:20:16,258 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:20:16,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:20:16 BoogieIcfgContainer [2022-12-14 10:20:16,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:20:16,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:20:16,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:20:16,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:20:16,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:20:09" (1/3) ... [2022-12-14 10:20:16,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2c03a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:20:16, skipping insertion in model container [2022-12-14 10:20:16,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (2/3) ... [2022-12-14 10:20:16,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2c03a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:20:16, skipping insertion in model container [2022-12-14 10:20:16,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:20:16" (3/3) ... [2022-12-14 10:20:16,269 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2022-12-14 10:20:16,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:20:16,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:20:16,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:20:16,353 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;@1f877c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:20:16,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:20:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 1097 states, 688 states have (on average 1.2979651162790697) internal successors, (893), 720 states have internal predecessors, (893), 392 states have call successors, (392), 15 states have call predecessors, (392), 15 states have return successors, (392), 390 states have call predecessors, (392), 392 states have call successors, (392) [2022-12-14 10:20:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-12-14 10:20:16,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:20:16,406 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] [2022-12-14 10:20:16,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:20:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:20:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 179167922, now seen corresponding path program 1 times [2022-12-14 10:20:16,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:20:16,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050829389] [2022-12-14 10:20:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:20:16,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms