./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/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_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/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_603a902b-d40d-4a22-b393-6708f1d8b03d/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 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 --- 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 16:04:53,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:04:53,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:04:53,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:04:53,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:04:53,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:04:53,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:04:53,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:04:53,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:04:53,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:04:53,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:04:53,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:04:53,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:04:53,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:04:53,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:04:53,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:04:53,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:04:53,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:04:53,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:04:53,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:04:53,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:04:53,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:04:53,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:04:53,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:04:53,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:04:53,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:04:53,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:04:53,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:04:53,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:04:53,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:04:53,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:04:53,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:04:53,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:04:53,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:04:53,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:04:53,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:04:53,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:04:53,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:04:53,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:04:53,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:04:53,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:04:53,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 16:04:53,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:04:53,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:04:53,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 16:04:53,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 16:04:53,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:04:53,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 16:04:53,183 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 16:04:53,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 16:04:53,184 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 16:04:53,184 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 16:04:53,184 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 16:04:53,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 16:04:53,184 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 16:04:53,185 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 16:04:53,185 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 16:04:53,185 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 16:04:53,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 16:04:53,185 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 16:04:53,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:04:53,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:04:53,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:04:53,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:04:53,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:04:53,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:04:53,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:04:53,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:04:53,187 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:04:53,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:04:53,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:04:53,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:04:53,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:04:53,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 16:04:53,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:04:53,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:04:53,188 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 16:04:53,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:04:53,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:04:53,189 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 16:04:53,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:04:53,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:04:53,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 16:04:53,189 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_603a902b-d40d-4a22-b393-6708f1d8b03d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59e3e46f44c4af6b4c125f352948304d54499979006c079b47d74ff56c39a104 [2022-12-14 16:04:53,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:04:53,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:04:53,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:04:53,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:04:53,416 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:04:53,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-12-14 16:04:55,976 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:04:56,345 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:04:56,345 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c [2022-12-14 16:04:56,369 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/data/231b6d683/35523ce5df7740aba4c2ce44c6e7bf71/FLAG3fa3e323f [2022-12-14 16:04:56,544 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/data/231b6d683/35523ce5df7740aba4c2ce44c6e7bf71 [2022-12-14 16:04:56,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:04:56,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:04:56,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:04:56,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:04:56,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:04:56,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:04:56" (1/1) ... [2022-12-14 16:04:56,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b75e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:56, skipping insertion in model container [2022-12-14 16:04:56,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:04:56" (1/1) ... [2022-12-14 16:04:56,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:04:56,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:04:56,839 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_603a902b-d40d-4a22-b393-6708f1d8b03d/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2022-12-14 16:04:56,916 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 16:04:56,916 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 16:04:56,918 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 16:04:56,921 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 16:04:56,921 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 16:04:56,922 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 16:04:56,922 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 16:04:56,922 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 16:04:56,950 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 16:04:56,950 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 16:04:57,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:04:57,476 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:04:57,486 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_603a902b-d40d-4a22-b393-6708f1d8b03d/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-1.c[1673,1686] [2022-12-14 16:04:57,500 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 16:04:57,500 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 16:04:57,501 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 16:04:57,502 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 16:04:57,503 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 16:04:57,503 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 16:04:57,503 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 16:04:57,504 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 16:04:57,507 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 16:04:57,507 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 16:04:57,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:04:57,974 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:04:57,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57 WrapperNode [2022-12-14 16:04:57,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:04:57,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:04:57,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:04:57,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:04:57,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:58,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:58,771 INFO L138 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39403 [2022-12-14 16:04:58,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:04:58,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:04:58,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:04:58,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:04:58,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:58,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:58,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:58,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:59,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:59,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:59,467 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:59,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:59,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:04:59,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:04:59,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:04:59,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:04:59,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (1/1) ... [2022-12-14 16:04:59,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 16:04:59,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 16:04:59,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 16:04:59,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_603a902b-d40d-4a22-b393-6708f1d8b03d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 16:04:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:04:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 16:04:59,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 16:04:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 16:04:59,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 16:04:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 16:04:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 16:04:59,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 16:04:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 16:04:59,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 16:04:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 16:04:59,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 16:04:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 16:04:59,661 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 16:04:59,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 16:04:59,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 16:04:59,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 16:04:59,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 16:04:59,661 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 16:04:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 16:04:59,661 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 16:04:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:04:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:04:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:04:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 16:04:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 16:04:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 16:04:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 16:04:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 16:04:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 16:05:00,801 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:05:00,802 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:05:22,030 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:05:22,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:05:22,562 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 16:05:22,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:05:22 BoogieIcfgContainer [2022-12-14 16:05:22,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:05:22,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 16:05:22,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 16:05:22,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 16:05:22,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:04:56" (1/3) ... [2022-12-14 16:05:22,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dd7010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:05:22, skipping insertion in model container [2022-12-14 16:05:22,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:04:57" (2/3) ... [2022-12-14 16:05:22,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25dd7010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:05:22, skipping insertion in model container [2022-12-14 16:05:22,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:05:22" (3/3) ... [2022-12-14 16:05:22,577 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-1.c [2022-12-14 16:05:22,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 16:05:22,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 16:05:22,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 16:05:22,836 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;@295abe8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 16:05:22,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 16:05:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 11972 states, 7837 states have (on average 1.3205308153630215) internal successors, (10349), 7950 states have internal predecessors, (10349), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2022-12-14 16:05:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3937 [2022-12-14 16:05:23,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 16:05:23,295 INFO L195 NwaCegarLoop]: trace histogram [337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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16:05:23,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 16:05:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:05:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash -904032390, now seen corresponding path program 1 times [2022-12-14 16:05:23,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 16:05:23,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295290831] [2022-12-14 16:05:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 16:05:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms