./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/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_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/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_b07274ed-667d-4ea1-8ca1-0014679e2d1a/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 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 --- 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 06:16:26,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:16:26,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:16:26,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:16:26,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:16:26,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:16:26,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:16:26,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:16:26,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:16:26,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:16:26,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:16:26,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:16:26,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:16:26,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:16:26,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:16:26,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:16:26,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:16:26,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:16:26,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:16:26,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:16:26,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:16:26,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:16:26,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:16:26,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:16:26,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:16:26,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:16:26,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:16:26,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:16:26,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:16:26,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:16:26,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:16:26,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:16:26,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:16:26,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:16:26,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:16:26,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:16:26,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:16:26,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:16:26,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:16:26,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:16:26,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:16:26,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:16:26,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:16:26,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:16:26,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:16:26,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:16:26,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:16:26,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:16:26,986 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:16:26,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:16:26,987 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:16:26,987 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:16:26,987 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:16:26,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:16:26,987 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:16:26,987 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:16:26,987 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:16:26,987 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:16:26,987 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:16:26,988 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:16:26,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:16:26,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:16:26,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:16:26,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:16:26,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:16:26,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:16:26,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:16:26,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:16:26,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:16:26,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:16:26,989 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:16:26,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:16:26,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:16:26,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:16:26,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:16:26,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:16:26,990 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:16:26,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:16:26,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:16:26,990 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:16:26,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:16:26,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:16:26,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:16:26,990 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_b07274ed-667d-4ea1-8ca1-0014679e2d1a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 491770f936b11f9c816b5badf382b4c7289d40b54afe46cb60faa6a0ff48de66 [2022-12-14 06:16:27,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:16:27,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:16:27,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:16:27,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:16:27,175 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:16:27,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2022-12-14 06:16:29,696 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:16:29,964 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:16:29,965 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c [2022-12-14 06:16:29,981 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/data/f3080b028/38b02fdbd20a4fb7a6dd7dbe1fedc3cd/FLAGc04a19aeb [2022-12-14 06:16:30,269 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/data/f3080b028/38b02fdbd20a4fb7a6dd7dbe1fedc3cd [2022-12-14 06:16:30,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:16:30,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:16:30,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:16:30,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:16:30,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:16:30,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:30,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4d62e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30, skipping insertion in model container [2022-12-14 06:16:30,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:30,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:16:30,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:16:30,440 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_b07274ed-667d-4ea1-8ca1-0014679e2d1a/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c[1762,1775] [2022-12-14 06:16:30,484 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 06:16:30,485 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 06:16:30,486 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 06:16:30,490 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 06:16:30,490 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 06:16:30,491 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 06:16:30,491 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 06:16:30,491 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 06:16:30,502 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 06:16:30,503 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 06:16:30,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:16:30,659 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:16:30,669 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_b07274ed-667d-4ea1-8ca1-0014679e2d1a/sv-benchmarks/c/seq-mthreaded/rekh_nxt.3.M1.c[1762,1775] [2022-12-14 06:16:30,681 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 06:16:30,682 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 06:16:30,682 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 06:16:30,684 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 06:16:30,684 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 06:16:30,685 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 06:16:30,685 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 06:16:30,685 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 06:16:30,688 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 06:16:30,688 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 06:16:30,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:16:30,796 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:16:30,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30 WrapperNode [2022-12-14 06:16:30,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:16:30,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:16:30,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:16:30,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:16:30,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:30,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:30,919 INFO L138 Inliner]: procedures = 60, calls = 2524, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 4783 [2022-12-14 06:16:30,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:16:30,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:16:30,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:16:30,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:16:30,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:30,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:30,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:30,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:31,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:31,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:31,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:31,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:31,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:16:31,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:16:31,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:16:31,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:16:31,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (1/1) ... [2022-12-14 06:16:31,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:16:31,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:16:31,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:16:31,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b07274ed-667d-4ea1-8ca1-0014679e2d1a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:16:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:16:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 06:16:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 06:16:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 06:16:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 06:16:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:16:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 06:16:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 06:16:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 06:16:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 06:16:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-12-14 06:16:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-12-14 06:16:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 06:16:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 06:16:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:16:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 06:16:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 06:16:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 06:16:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 06:16:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 06:16:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 06:16:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 06:16:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 06:16:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:16:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 06:16:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 06:16:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:16:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 06:16:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 06:16:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 06:16:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 06:16:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-12-14 06:16:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-12-14 06:16:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 06:16:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 06:16:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:16:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:16:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:16:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 06:16:31,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 06:16:31,126 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 06:16:31,126 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 06:16:31,126 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 06:16:31,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 06:16:31,431 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:16:31,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:16:38,395 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:16:38,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:16:38,631 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:16:38,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:16:38 BoogieIcfgContainer [2022-12-14 06:16:38,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:16:38,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:16:38,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:16:38,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:16:38,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:16:30" (1/3) ... [2022-12-14 06:16:38,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc1c4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:16:38, skipping insertion in model container [2022-12-14 06:16:38,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:16:30" (2/3) ... [2022-12-14 06:16:38,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc1c4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:16:38, skipping insertion in model container [2022-12-14 06:16:38,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:16:38" (3/3) ... [2022-12-14 06:16:38,642 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.3.M1.c [2022-12-14 06:16:38,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:16:38,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:16:38,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:16:38,721 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;@4958bc12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:16:38,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:16:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 1893 states, 1101 states have (on average 1.2052679382379654) internal successors, (1327), 1105 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 06:16:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-12-14 06:16:38,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:16:38,798 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 06:16:38,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:16:38,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:16:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 319089911, now seen corresponding path program 1 times [2022-12-14 06:16:38,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:16:38,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066642228] [2022-12-14 06:16:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:16:38,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms