./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/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_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/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_5c5bb476-5814-451e-983c-dfbc2af2c134/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 f077881e7f4fa96e31e8798f1b4a7ec1ee00f86778c2b79845cdeaf2537e700e --- 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 08:30:02,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:30:02,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:30:02,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:30:02,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:30:02,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:30:02,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:30:02,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:30:02,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:30:02,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:30:02,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:30:02,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:30:02,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:30:02,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:30:02,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:30:02,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:30:02,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:30:02,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:30:02,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:30:02,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:30:02,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:30:02,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:30:02,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:30:02,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:30:02,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:30:02,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:30:02,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:30:02,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:30:02,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:30:02,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:30:02,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:30:02,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:30:02,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:30:02,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:30:02,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:30:02,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:30:02,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:30:02,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:30:02,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:30:02,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:30:02,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:30:02,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:30:02,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:30:02,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:30:02,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:30:02,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:30:02,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:30:02,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:30:03,000 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:30:03,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:30:03,000 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:30:03,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:30:03,000 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:30:03,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:30:03,000 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:30:03,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:30:03,001 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:30:03,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:30:03,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:30:03,001 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:30:03,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:30:03,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:30:03,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:30:03,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:30:03,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:30:03,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:30:03,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:30:03,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:30:03,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:30:03,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:30:03,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:30:03,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:30:03,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:30:03,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:30:03,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:30:03,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:30:03,004 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:30:03,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:30:03,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:30:03,004 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:30:03,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:30:03,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:30:03,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:30:03,005 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_5c5bb476-5814-451e-983c-dfbc2af2c134/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f077881e7f4fa96e31e8798f1b4a7ec1ee00f86778c2b79845cdeaf2537e700e [2022-12-14 08:30:03,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:30:03,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:30:03,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:30:03,206 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:30:03,206 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:30:03,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c [2022-12-14 08:30:05,767 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:30:06,017 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:30:06,017 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c [2022-12-14 08:30:06,033 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/data/ca6a24649/9236a1b306a844fdbd3db60f9941fe9e/FLAGb8ade6a19 [2022-12-14 08:30:06,348 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/data/ca6a24649/9236a1b306a844fdbd3db60f9941fe9e [2022-12-14 08:30:06,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:30:06,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:30:06,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:30:06,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:30:06,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:30:06,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:06,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78081a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06, skipping insertion in model container [2022-12-14 08:30:06,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:06,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:30:06,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:30:06,509 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_5c5bb476-5814-451e-983c-dfbc2af2c134/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c[1674,1687] [2022-12-14 08:30:06,546 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 08:30:06,546 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 08:30:06,548 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 08:30:06,551 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:30:06,551 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:30:06,551 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 08:30:06,552 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:30:06,552 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:30:06,560 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 08:30:06,561 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 08:30:06,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:30:06,687 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:30:06,697 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_5c5bb476-5814-451e-983c-dfbc2af2c134/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-1.c[1674,1687] [2022-12-14 08:30:06,708 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 08:30:06,709 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 08:30:06,709 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 08:30:06,711 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:30:06,711 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:30:06,711 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 08:30:06,712 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:30:06,712 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 08:30:06,715 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 08:30:06,715 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 08:30:06,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:30:06,866 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:30:06,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06 WrapperNode [2022-12-14 08:30:06,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:30:06,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:30:06,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:30:06,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:30:06,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:06,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,032 INFO L138 Inliner]: procedures = 57, calls = 1672, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3715 [2022-12-14 08:30:07,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:30:07,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:30:07,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:30:07,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:30:07,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,137 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:30:07,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:30:07,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:30:07,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:30:07,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (1/1) ... [2022-12-14 08:30:07,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:30:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:30:07,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:30:07,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5bb476-5814-451e-983c-dfbc2af2c134/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:30:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:30:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 08:30:07,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 08:30:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 08:30:07,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 08:30:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:30:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 08:30:07,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 08:30:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 08:30:07,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 08:30:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 08:30:07,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 08:30:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 08:30:07,222 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 08:30:07,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 08:30:07,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 08:30:07,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 08:30:07,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 08:30:07,222 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 08:30:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 08:30:07,222 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 08:30:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:30:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:30:07,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:30:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 08:30:07,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 08:30:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 08:30:07,223 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 08:30:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 08:30:07,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 08:30:07,507 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:30:07,509 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:30:13,181 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:30:13,248 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:30:13,248 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:30:13,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:30:13 BoogieIcfgContainer [2022-12-14 08:30:13,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:30:13,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:30:13,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:30:13,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:30:13,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:30:06" (1/3) ... [2022-12-14 08:30:13,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fddb8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:30:13, skipping insertion in model container [2022-12-14 08:30:13,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:30:06" (2/3) ... [2022-12-14 08:30:13,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fddb8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:30:13, skipping insertion in model container [2022-12-14 08:30:13,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:30:13" (3/3) ... [2022-12-14 08:30:13,257 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-1.c [2022-12-14 08:30:13,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:30:13,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:30:13,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:30:13,327 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;@2559ac1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:30:13,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:30:13,333 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 08:30:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-12-14 08:30:13,371 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:30:13,371 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 08:30:13,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:30:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:30:13,376 INFO L85 PathProgramCache]: Analyzing trace with hash 179167922, now seen corresponding path program 1 times [2022-12-14 08:30:13,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:30:13,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373344458] [2022-12-14 08:30:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:30:13,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms