./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.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_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/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_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/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_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/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 e0278abdbbb57b3938e33a237527cf3a8d14feaf8eba047d58da36569d27728f --- 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 23:32:35,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:32:35,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:32:35,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:32:35,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:32:35,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:32:35,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:32:35,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:32:35,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:32:35,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:32:35,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:32:35,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:32:35,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:32:35,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:32:35,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:32:35,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:32:35,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:32:35,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:32:35,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:32:35,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:32:35,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:32:35,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:32:35,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:32:35,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:32:35,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:32:35,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:32:35,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:32:35,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:32:35,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:32:35,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:32:35,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:32:35,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:32:35,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:32:35,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:32:35,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:32:35,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:32:35,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:32:35,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:32:35,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:32:35,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:32:35,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:32:35,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:32:35,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:32:35,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:32:35,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:32:35,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:32:35,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:32:35,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:32:35,435 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:32:35,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:32:35,435 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:32:35,435 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:32:35,436 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:32:35,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:32:35,436 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:32:35,436 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:32:35,437 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:32:35,437 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:32:35,437 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:32:35,437 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:32:35,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:32:35,438 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:32:35,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:32:35,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:32:35,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:32:35,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:32:35,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:32:35,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:32:35,440 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:32:35,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:32:35,440 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:32:35,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:32:35,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:32:35,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:32:35,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:32:35,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:32:35,442 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:32:35,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:32:35,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:32:35,443 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:32:35,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:32:35,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:32:35,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:32:35,444 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_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0278abdbbb57b3938e33a237527cf3a8d14feaf8eba047d58da36569d27728f [2022-11-25 23:32:35,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:32:35,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:32:35,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:32:35,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:32:35,780 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:32:35,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-11-25 23:32:38,946 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:32:39,335 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:32:39,336 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-11-25 23:32:39,361 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/data/d648d6cc8/6aa9ad6ff16741f89a0d13f7e90e419c/FLAG1e7307ecd [2022-11-25 23:32:39,381 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/data/d648d6cc8/6aa9ad6ff16741f89a0d13f7e90e419c [2022-11-25 23:32:39,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:32:39,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:32:39,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:32:39,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:32:39,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:32:39,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:32:39" (1/1) ... [2022-11-25 23:32:39,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422a4a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:39, skipping insertion in model container [2022-11-25 23:32:39,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:32:39" (1/1) ... [2022-11-25 23:32:39,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:32:39,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:32:39,693 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_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c[1765,1778] [2022-11-25 23:32:39,799 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:32:39,802 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:32:39,809 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 23:32:39,824 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:32:39,824 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:32:39,830 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 23:32:39,831 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:32:39,831 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:32:39,853 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 23:32:39,855 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 23:32:40,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:32:40,106 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:32:40,126 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_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c[1765,1778] [2022-11-25 23:32:40,162 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:32:40,163 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:32:40,164 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 23:32:40,166 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:32:40,167 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:32:40,167 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 23:32:40,167 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:32:40,168 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:32:40,185 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 23:32:40,186 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 23:32:40,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:32:40,475 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:32:40,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40 WrapperNode [2022-11-25 23:32:40,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:32:40,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:32:40,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:32:40,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:32:40,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:40,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:40,719 INFO L138 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4783 [2022-11-25 23:32:40,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:32:40,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:32:40,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:32:40,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:32:40,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:40,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:40,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:40,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:40,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:40,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:41,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:41,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:41,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:32:41,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:32:41,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:32:41,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:32:41,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (1/1) ... [2022-11-25 23:32:41,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:32:41,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:32:41,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:32:41,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff8fdbc-2f96-4502-8f47-35dc7a41aee7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:32:41,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:32:41,222 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-25 23:32:41,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-25 23:32:41,223 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-25 23:32:41,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-25 23:32:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:32:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-25 23:32:41,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-25 23:32:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-25 23:32:41,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-25 23:32:41,224 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-11-25 23:32:41,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-11-25 23:32:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-25 23:32:41,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-25 23:32:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:32:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-25 23:32:41,225 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-25 23:32:41,225 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-25 23:32:41,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-25 23:32:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 23:32:41,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 23:32:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 23:32:41,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 23:32:41,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:32:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 23:32:41,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 23:32:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:32:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-25 23:32:41,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-25 23:32:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-25 23:32:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-25 23:32:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-11-25 23:32:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-11-25 23:32:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:32:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:32:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:32:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:32:41,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:32:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-25 23:32:41,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-25 23:32:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-25 23:32:41,230 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-25 23:32:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-25 23:32:41,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-25 23:32:41,756 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:32:41,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:32:50,627 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:32:50,996 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:32:50,996 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:32:51,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:51 BoogieIcfgContainer [2022-11-25 23:32:51,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:32:51,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:32:51,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:32:51,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:32:51,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:32:39" (1/3) ... [2022-11-25 23:32:51,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f014515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:32:51, skipping insertion in model container [2022-11-25 23:32:51,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:32:40" (2/3) ... [2022-11-25 23:32:51,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f014515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:32:51, skipping insertion in model container [2022-11-25 23:32:51,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:32:51" (3/3) ... [2022-11-25 23:32:51,010 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-1.c [2022-11-25 23:32:51,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:32:51,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:32:51,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:32:51,117 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;@61a5dd00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:32:51,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:32:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 1893 states, 1101 states have (on average 1.2052679382379654) internal successors, (1327), 1106 states have internal predecessors, (1327), 772 states have call successors, (772), 18 states have call predecessors, (772), 18 states have return successors, (772), 770 states have call predecessors, (772), 772 states have call successors, (772) [2022-11-25 23:32:51,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-11-25 23:32:51,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:32:51,171 INFO L195 NwaCegarLoop]: trace histogram [209, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:32:51,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:32:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:32:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 962128900, now seen corresponding path program 1 times [2022-11-25 23:32:51,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:32:51,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479487987] [2022-11-25 23:32:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:32:51,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms