./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 --- 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 [2022-12-13 17:54:37,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:54:37,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:54:37,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:54:37,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:54:37,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:54:37,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:54:37,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:54:37,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:54:37,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:54:37,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:54:37,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:54:37,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:54:37,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:54:37,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:54:37,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:54:37,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:54:37,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:54:37,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:54:37,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:54:37,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:54:37,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:54:37,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:54:37,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:54:37,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:54:37,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:54:37,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:54:37,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:54:37,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:54:37,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:54:37,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:54:37,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:54:37,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:54:37,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:54:37,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:54:37,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:54:37,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:54:37,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:54:37,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:54:37,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:54:37,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:54:37,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:54:37,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:54:37,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:54:37,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:54:37,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:54:37,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:54:37,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:54:37,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:54:37,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:54:37,579 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:54:37,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:54:37,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:54:37,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:54:37,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:54:37,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:54:37,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:54:37,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:54:37,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:54:37,581 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:54:37,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:54:37,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:54:37,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:54:37,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:54:37,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:54:37,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:54:37,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:54:37,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:54:37,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:54:37,583 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 [2022-12-13 17:54:37,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:54:37,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:54:37,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:54:37,794 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:54:37,795 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:54:37,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2022-12-13 17:54:40,439 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:54:40,691 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:54:40,691 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2022-12-13 17:54:40,707 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/data/a130b5892/1e129ff22d81476289fea3b13dc104c9/FLAGf59ef3564 [2022-12-13 17:54:40,719 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/data/a130b5892/1e129ff22d81476289fea3b13dc104c9 [2022-12-13 17:54:40,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:54:40,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:54:40,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:54:40,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:54:40,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:54:40,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:54:40" (1/1) ... [2022-12-13 17:54:40,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18441f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:40, skipping insertion in model container [2022-12-13 17:54:40,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:54:40" (1/1) ... [2022-12-13 17:54:40,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:54:40,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:54:40,942 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_80272542-e646-4e4d-bde2-04cb10cc3c50/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c[1765,1778] [2022-12-13 17:54:41,004 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 17:54:41,005 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 17:54:41,006 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-13 17:54:41,010 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 17:54:41,010 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 17:54:41,010 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-13 17:54:41,011 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 17:54:41,011 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 17:54:41,021 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-13 17:54:41,022 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-13 17:54:41,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:54:41,237 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:54:41,250 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_80272542-e646-4e4d-bde2-04cb10cc3c50/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c[1765,1778] [2022-12-13 17:54:41,266 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 17:54:41,267 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 17:54:41,267 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-13 17:54:41,269 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 17:54:41,270 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 17:54:41,270 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-13 17:54:41,270 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 17:54:41,271 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 17:54:41,275 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-13 17:54:41,275 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-13 17:54:41,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:54:41,409 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:54:41,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41 WrapperNode [2022-12-13 17:54:41,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:54:41,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:54:41,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:54:41,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:54:41,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,590 INFO L138 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2022-12-13 17:54:41,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:54:41,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:54:41,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:54:41,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:54:41,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:54:41,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:54:41,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:54:41,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:54:41,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (1/1) ... [2022-12-13 17:54:41,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:54:41,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:54:41,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:54:41,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80272542-e646-4e4d-bde2-04cb10cc3c50/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:54:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-13 17:54:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-13 17:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-13 17:54:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-13 17:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-13 17:54:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-13 17:54:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-13 17:54:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-13 17:54:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-12-13 17:54:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-12-13 17:54:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-13 17:54:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-13 17:54:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:54:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-13 17:54:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-13 17:54:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-13 17:54:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-13 17:54:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-13 17:54:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-13 17:54:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-13 17:54:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-13 17:54:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:54:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-12-13 17:54:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-12-13 17:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-13 17:54:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-13 17:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-13 17:54:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-13 17:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-13 17:54:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-13 17:54:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-12-13 17:54:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-12-13 17:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 17:54:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 17:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:54:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-13 17:54:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-13 17:54:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-13 17:54:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-13 17:54:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-13 17:54:41,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-13 17:54:42,138 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:54:42,139 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:54:50,061 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:54:50,079 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:54:50,080 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:54:50,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:54:50 BoogieIcfgContainer [2022-12-13 17:54:50,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:54:50,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:54:50,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:54:50,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:54:50,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:54:40" (1/3) ... [2022-12-13 17:54:50,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfff307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:54:50, skipping insertion in model container [2022-12-13 17:54:50,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:54:41" (2/3) ... [2022-12-13 17:54:50,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfff307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:54:50, skipping insertion in model container [2022-12-13 17:54:50,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:54:50" (3/3) ... [2022-12-13 17:54:50,092 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-2.c [2022-12-13 17:54:50,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:54:50,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:54:50,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:54:50,195 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=PETRI_NET, 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;@64f1fbfd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:54:50,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:54:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 1944 states, 1149 states have (on average 1.2027850304612706) internal successors, (1382), 1154 states have internal predecessors, (1382), 774 states have call successors, (774), 19 states have call predecessors, (774), 19 states have return successors, (774), 772 states have call predecessors, (774), 774 states have call successors, (774) [2022-12-13 17:54:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2022-12-13 17:54:50,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:54:50,292 INFO L195 NwaCegarLoop]: trace histogram [209, 209, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:54:50,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:54:50,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:54:50,298 INFO L85 PathProgramCache]: Analyzing trace with hash 502494177, now seen corresponding path program 1 times [2022-12-13 17:54:50,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:54:50,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736784530] [2022-12-13 17:54:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:54:50,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms