./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 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_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/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_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-2329fc7 [2022-12-14 13:36:49,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:36:49,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:36:49,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:36:49,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:36:49,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:36:49,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:36:49,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:36:49,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:36:49,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:36:49,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:36:49,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:36:49,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:36:49,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:36:49,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:36:49,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:36:49,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:36:49,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:36:49,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:36:49,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:36:49,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:36:49,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:36:49,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:36:49,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:36:49,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:36:49,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:36:49,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:36:49,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:36:49,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:36:49,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:36:49,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:36:49,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:36:49,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:36:49,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:36:49,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:36:49,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:36:49,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:36:49,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:36:49,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:36:49,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:36:49,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:36:49,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:36:49,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:36:49,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:36:49,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:36:49,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:36:49,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:36:49,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:36:49,685 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:36:49,685 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:36:49,685 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:36:49,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:36:49,685 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:36:49,686 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:36:49,686 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:36:49,686 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:36:49,686 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:36:49,686 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:36:49,686 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:36:49,686 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:36:49,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:36:49,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:36:49,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:36:49,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:36:49,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:36:49,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:36:49,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:36:49,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:36:49,688 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:36:49,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:36:49,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:36:49,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:36:49,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:36:49,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:36:49,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:36:49,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:36:49,688 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:36:49,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:36:49,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:36:49,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:36:49,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:36:49,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:36:49,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:36:49,689 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_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0278abdbbb57b3938e33a237527cf3a8d14feaf8eba047d58da36569d27728f [2022-12-14 13:36:49,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:36:49,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:36:49,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:36:49,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:36:49,867 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:36:49,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-12-14 13:36:52,462 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:36:52,710 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:36:52,711 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c [2022-12-14 13:36:52,730 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/data/e3afd428f/a8cd16536e6845359a260e7f9984b395/FLAG872028104 [2022-12-14 13:36:52,742 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/data/e3afd428f/a8cd16536e6845359a260e7f9984b395 [2022-12-14 13:36:52,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:36:52,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:36:52,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:36:52,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:36:52,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:36:52,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:36:52" (1/1) ... [2022-12-14 13:36:52,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc28d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:52, skipping insertion in model container [2022-12-14 13:36:52,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:36:52" (1/1) ... [2022-12-14 13:36:52,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:36:52,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:36:52,936 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_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c[1765,1778] [2022-12-14 13:36:52,979 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 13:36:52,980 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 13:36:52,981 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 13:36:52,984 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 13:36:52,985 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 13:36:52,985 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 13:36:52,985 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 13:36:52,986 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 13:36:52,997 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 13:36:52,998 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 13:36:53,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:36:53,175 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:36:53,186 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_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M1-1.c[1765,1778] [2022-12-14 13:36:53,198 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 13:36:53,198 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 13:36:53,199 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 13:36:53,201 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 13:36:53,202 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 13:36:53,202 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 13:36:53,202 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 13:36:53,202 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 13:36:53,207 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 13:36:53,207 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 13:36:53,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:36:53,325 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:36:53,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53 WrapperNode [2022-12-14 13:36:53,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:36:53,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:36:53,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:36:53,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:36:53,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,447 INFO L138 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4783 [2022-12-14 13:36:53,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:36:53,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:36:53,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:36:53,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:36:53,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,602 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:36:53,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:36:53,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:36:53,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:36:53,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (1/1) ... [2022-12-14 13:36:53,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:36:53,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:36:53,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:36:53,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c72cc6b0-a1a4-48cb-b582-af5bb4ef8261/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:36:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:36:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 13:36:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 13:36:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 13:36:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 13:36:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:36:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 13:36:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 13:36:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 13:36:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 13:36:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-12-14 13:36:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-12-14 13:36:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 13:36:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 13:36:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:36:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 13:36:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 13:36:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 13:36:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 13:36:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 13:36:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 13:36:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 13:36:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 13:36:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:36:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 13:36:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 13:36:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:36:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 13:36:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 13:36:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 13:36:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 13:36:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-12-14 13:36:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-12-14 13:36:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 13:36:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 13:36:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:36:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:36:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:36:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 13:36:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 13:36:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 13:36:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 13:36:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 13:36:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 13:36:54,034 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:36:54,036 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:37:01,796 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:37:02,077 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:37:02,077 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:37:02,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:37:02 BoogieIcfgContainer [2022-12-14 13:37:02,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:37:02,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:37:02,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:37:02,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:37:02,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:36:52" (1/3) ... [2022-12-14 13:37:02,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64690d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:37:02, skipping insertion in model container [2022-12-14 13:37:02,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:36:53" (2/3) ... [2022-12-14 13:37:02,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64690d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:37:02, skipping insertion in model container [2022-12-14 13:37:02,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:37:02" (3/3) ... [2022-12-14 13:37:02,090 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M1-1.c [2022-12-14 13:37:02,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:37:02,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:37:02,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:37:02,190 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;@43c34727, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:37:02,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:37:02,198 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) [2022-12-14 13:37:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-12-14 13:37:02,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:02,237 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] [2022-12-14 13:37:02,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:37:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash 319089911, now seen corresponding path program 1 times [2022-12-14 13:37:02,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:02,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017286008] [2022-12-14 13:37:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:02,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms