./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:46:34,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:46:34,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:46:34,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:46:34,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:46:34,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:46:34,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:46:34,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:46:34,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:46:34,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:46:34,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:46:34,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:46:34,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:46:34,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:46:34,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:46:34,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:46:34,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:46:34,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:46:34,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:46:34,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:46:34,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:46:34,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:46:34,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:46:34,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:46:34,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:46:34,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:46:34,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:46:34,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:46:34,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:46:34,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:46:34,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:46:34,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:46:34,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:46:34,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:46:34,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:46:34,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:46:34,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:46:34,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:46:34,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:46:34,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:46:34,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:46:34,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:46:34,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:46:34,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:46:34,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:46:34,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:46:34,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:46:34,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:46:34,305 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:46:34,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:46:34,306 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:46:34,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:46:34,306 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:46:34,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:46:34,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:46:34,319 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:46:34,319 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:46:34,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:46:34,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:46:34,320 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:46:34,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:46:34,321 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:46:34,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:46:34,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:46:34,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:46:34,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:46:34,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:46:34,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:46:34,323 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:46:34,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:46:34,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:46:34,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:46:34,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:46:34,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:46:34,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:46:34,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:46:34,325 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:46:34,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:46:34,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:46:34,326 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:46:34,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:46:34,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:46:34,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:46:34,327 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_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62587b117a9681076835c6b8632932457a449dd934a075adad6a2d524a609396 [2022-11-25 23:46:34,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:46:34,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:46:34,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:46:34,671 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:46:34,672 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:46:34,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2022-11-25 23:46:37,783 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:46:38,077 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:46:38,078 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c [2022-11-25 23:46:38,106 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/data/413fcb998/2d5792ab61814f468f645c85ab8d08a1/FLAGd3e7d7d2a [2022-11-25 23:46:38,120 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/data/413fcb998/2d5792ab61814f468f645c85ab8d08a1 [2022-11-25 23:46:38,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:46:38,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:46:38,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:46:38,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:46:38,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:46:38,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:46:38" (1/1) ... [2022-11-25 23:46:38,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327d67e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:38, skipping insertion in model container [2022-11-25 23:46:38,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:46:38" (1/1) ... [2022-11-25 23:46:38,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:46:38,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:46:38,353 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_929b561c-90cc-4b34-904c-41ca2d968e20/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2022-11-25 23:46:38,410 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:46:38,411 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:46:38,413 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 23:46:38,418 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:46:38,419 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:46:38,420 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 23:46:38,420 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:46:38,421 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:46:38,437 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 23:46:38,437 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 23:46:38,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:46:38,789 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:46:38,811 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_929b561c-90cc-4b34-904c-41ca2d968e20/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M1-2.c[1673,1686] [2022-11-25 23:46:38,829 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:46:38,829 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:46:38,830 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 23:46:38,833 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:46:38,833 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:46:38,834 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 23:46:38,834 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:46:38,847 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:46:38,852 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 23:46:38,853 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 23:46:39,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:46:39,068 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:46:39,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39 WrapperNode [2022-11-25 23:46:39,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:46:39,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:46:39,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:46:39,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:46:39,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,275 INFO L138 Inliner]: procedures = 57, calls = 1672, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3715 [2022-11-25 23:46:39,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:46:39,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:46:39,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:46:39,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:46:39,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,421 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:46:39,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:46:39,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:46:39,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:46:39,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (1/1) ... [2022-11-25 23:46:39,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:46:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:39,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:46:39,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929b561c-90cc-4b34-904c-41ca2d968e20/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:46:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:46:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-25 23:46:39,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-25 23:46:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-25 23:46:39,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-25 23:46:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:46:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-25 23:46:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-25 23:46:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-25 23:46:39,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-25 23:46:39,566 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-25 23:46:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-25 23:46:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:46:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-25 23:46:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-25 23:46:39,567 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-25 23:46:39,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-25 23:46:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 23:46:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 23:46:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 23:46:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 23:46:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:46:39,568 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 23:46:39,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 23:46:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:46:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-25 23:46:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-25 23:46:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:46:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:46:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:46:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:46:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:46:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-25 23:46:39,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-25 23:46:39,571 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-25 23:46:39,572 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-25 23:46:39,572 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-25 23:46:39,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-25 23:46:40,160 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:46:40,163 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:46:47,173 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:46:47,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:46:47,312 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:46:47,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:46:47 BoogieIcfgContainer [2022-11-25 23:46:47,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:46:47,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:46:47,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:46:47,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:46:47,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:46:38" (1/3) ... [2022-11-25 23:46:47,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5450a33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:46:47, skipping insertion in model container [2022-11-25 23:46:47,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:39" (2/3) ... [2022-11-25 23:46:47,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5450a33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:46:47, skipping insertion in model container [2022-11-25 23:46:47,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:46:47" (3/3) ... [2022-11-25 23:46:47,326 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M1-2.c [2022-11-25 23:46:47,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:46:47,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:46:47,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:46:47,472 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;@4d50abf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:46:47,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:46:47,486 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) [2022-11-25 23:46:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-11-25 23:46:47,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:47,539 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] [2022-11-25 23:46:47,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:46:47,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash 179227504, now seen corresponding path program 1 times [2022-11-25 23:46:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:47,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342748315] [2022-11-25 23:46:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms