./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.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_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/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_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/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_9c315ca5-150d-4791-9a22-1a34a7daba00/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 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:01:46,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:01:46,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:01:46,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:01:46,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:01:46,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:01:46,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:01:46,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:01:46,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:01:46,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:01:46,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:01:46,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:01:46,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:01:46,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:01:46,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:01:46,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:01:46,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:01:46,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:01:46,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:01:46,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:01:46,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:01:46,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:01:46,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:01:46,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:01:46,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:01:46,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:01:46,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:01:46,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:01:46,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:01:46,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:01:46,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:01:46,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:01:46,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:01:46,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:01:46,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:01:46,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:01:46,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:01:46,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:01:46,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:01:46,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:01:46,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:01:46,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:01:46,841 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:01:46,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:01:46,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:01:46,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:01:46,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:01:46,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:01:46,843 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:01:46,843 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:01:46,843 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:01:46,843 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:01:46,843 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:01:46,843 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:01:46,843 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:01:46,843 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:01:46,844 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:01:46,844 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:01:46,844 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:01:46,844 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:01:46,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:01:46,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:01:46,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:01:46,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:01:46,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:01:46,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:01:46,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:01:46,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:01:46,846 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:01:46,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:01:46,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:01:46,847 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:01:46,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:01:46,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:01:46,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:01:46,847 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_9c315ca5-150d-4791-9a22-1a34a7daba00/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1074202fec0087dade7e2e551bbdbc8477fa7ac87a060024146de6dec8d276ec [2022-12-14 05:01:47,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:01:47,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:01:47,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:01:47,037 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:01:47,037 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:01:47,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2022-12-14 05:01:49,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:01:49,997 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:01:49,997 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c [2022-12-14 05:01:50,027 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/data/98fa4c9d3/a7e1eb1e2cc04173b1994c409c4d45e1/FLAG524945fb8 [2022-12-14 05:01:50,040 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/data/98fa4c9d3/a7e1eb1e2cc04173b1994c409c4d45e1 [2022-12-14 05:01:50,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:01:50,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:01:50,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:01:50,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:01:50,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:01:50,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:01:50" (1/1) ... [2022-12-14 05:01:50,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65578f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:50, skipping insertion in model container [2022-12-14 05:01:50,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:01:50" (1/1) ... [2022-12-14 05:01:50,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:01:50,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:01:50,387 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_9c315ca5-150d-4791-9a22-1a34a7daba00/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2022-12-14 05:01:50,469 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:01:50,470 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:01:50,471 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 05:01:50,475 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:01:50,475 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:01:50,476 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 05:01:50,476 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:01:50,476 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:01:50,503 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 05:01:50,504 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 05:01:50,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:01:50,995 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:01:51,006 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_9c315ca5-150d-4791-9a22-1a34a7daba00/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M4-2.c[2278,2291] [2022-12-14 05:01:51,016 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:01:51,017 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:01:51,017 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 05:01:51,018 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:01:51,018 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:01:51,019 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 05:01:51,019 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:01:51,019 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:01:51,021 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 05:01:51,021 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 05:01:51,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:01:51,586 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:01:51,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51 WrapperNode [2022-12-14 05:01:51,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:01:51,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:01:51,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:01:51,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:01:51,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:51,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:52,402 INFO L138 Inliner]: procedures = 62, calls = 18852, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 40945 [2022-12-14 05:01:52,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:01:52,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:01:52,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:01:52,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:01:52,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:52,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:52,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:52,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:53,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:53,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:53,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:53,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:53,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:01:53,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:01:53,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:01:53,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:01:53,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (1/1) ... [2022-12-14 05:01:53,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:01:53,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:01:53,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:01:53,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c315ca5-150d-4791-9a22-1a34a7daba00/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:01:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:01:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 05:01:53,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 05:01:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 05:01:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 05:01:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:01:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 05:01:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 05:01:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 05:01:53,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 05:01:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-12-14 05:01:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-12-14 05:01:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 05:01:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 05:01:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:01:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 05:01:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 05:01:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 05:01:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 05:01:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 05:01:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 05:01:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 05:01:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 05:01:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:01:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 05:01:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 05:01:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:01:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 05:01:53,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 05:01:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 05:01:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 05:01:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-12-14 05:01:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-12-14 05:01:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 05:01:53,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 05:01:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:01:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:01:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:01:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 05:01:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 05:01:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 05:01:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 05:01:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 05:01:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 05:01:54,638 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:01:54,639 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:02:43,256 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:02:44,026 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:02:44,026 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:02:44,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:02:44 BoogieIcfgContainer [2022-12-14 05:02:44,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:02:44,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:02:44,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:02:44,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:02:44,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:01:50" (1/3) ... [2022-12-14 05:02:44,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d66d37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:02:44, skipping insertion in model container [2022-12-14 05:02:44,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:01:51" (2/3) ... [2022-12-14 05:02:44,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d66d37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:02:44, skipping insertion in model container [2022-12-14 05:02:44,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:02:44" (3/3) ... [2022-12-14 05:02:44,040 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M4-2.c [2022-12-14 05:02:44,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:02:44,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:02:44,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:02:44,224 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;@298527ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:02:44,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:02:44,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 12435 states, 8072 states have (on average 1.3119425173439048) internal successors, (10590), 8185 states have internal predecessors, (10590), 4343 states have call successors, (4343), 18 states have call predecessors, (4343), 18 states have return successors, (4343), 4341 states have call predecessors, (4343), 4343 states have call successors, (4343) [2022-12-14 05:02:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4366 [2022-12-14 05:02:44,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:02:44,681 INFO L195 NwaCegarLoop]: trace histogram [444, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:02:44,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:02:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1822893411, now seen corresponding path program 1 times [2022-12-14 05:02:44,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:02:44,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127134491] [2022-12-14 05:02:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:02:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms