./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.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_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/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_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/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_24952b90-bd94-4039-b048-538d8422792c/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 02d0ab19c61564f5abc0709934811896521a72f96ec1b9a0c41f20d28a391c3e --- 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 15:25:29,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:25:29,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:25:29,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:25:29,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:25:29,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:25:29,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:25:29,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:25:29,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:25:29,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:25:29,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:25:29,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:25:29,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:25:29,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:25:29,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:25:29,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:25:29,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:25:29,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:25:29,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:25:29,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:25:29,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:25:29,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:25:29,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:25:29,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:25:29,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:25:29,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:25:29,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:25:29,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:25:29,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:25:29,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:25:29,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:25:29,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:25:29,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:25:29,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:25:29,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:25:29,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:25:29,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:25:29,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:25:29,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:25:29,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:25:29,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:25:29,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:25:29,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:25:29,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:25:29,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:25:29,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:25:29,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:25:29,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:25:29,320 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:25:29,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:25:29,320 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:25:29,320 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:25:29,321 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:25:29,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:25:29,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:25:29,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:25:29,321 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:25:29,321 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:25:29,321 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:25:29,321 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:25:29,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:25:29,322 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:25:29,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:25:29,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:25:29,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:25:29,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:25:29,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:25:29,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:25:29,323 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:25:29,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:25:29,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:25:29,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:25:29,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:25:29,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:25:29,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:25:29,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:25:29,324 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:25:29,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:25:29,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:25:29,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:25:29,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:25:29,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:25:29,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:25:29,325 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_24952b90-bd94-4039-b048-538d8422792c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02d0ab19c61564f5abc0709934811896521a72f96ec1b9a0c41f20d28a391c3e [2022-12-14 15:25:29,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:25:29,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:25:29,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:25:29,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:25:29,546 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:25:29,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c [2022-12-14 15:25:32,080 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:25:32,416 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:25:32,417 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c [2022-12-14 15:25:32,457 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/data/688012698/a6bdde3466534744a799ac19477b6030/FLAG39f515b41 [2022-12-14 15:25:32,653 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/data/688012698/a6bdde3466534744a799ac19477b6030 [2022-12-14 15:25:32,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:25:32,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:25:32,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:25:32,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:25:32,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:25:32,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:25:32" (1/1) ... [2022-12-14 15:25:32,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c5b86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:32, skipping insertion in model container [2022-12-14 15:25:32,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:25:32" (1/1) ... [2022-12-14 15:25:32,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:25:32,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:25:33,005 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_24952b90-bd94-4039-b048-538d8422792c/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c[1674,1687] [2022-12-14 15:25:33,074 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 15:25:33,074 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 15:25:33,076 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 15:25:33,079 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 15:25:33,079 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 15:25:33,079 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 15:25:33,080 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 15:25:33,080 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 15:25:33,106 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 15:25:33,106 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 15:25:33,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:25:33,638 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:25:33,651 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_24952b90-bd94-4039-b048-538d8422792c/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c[1674,1687] [2022-12-14 15:25:33,665 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 15:25:33,666 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 15:25:33,666 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 15:25:33,668 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 15:25:33,668 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 15:25:33,669 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 15:25:33,669 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 15:25:33,669 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 15:25:33,672 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 15:25:33,672 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 15:25:34,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:25:34,312 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:25:34,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34 WrapperNode [2022-12-14 15:25:34,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:25:34,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:25:34,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:25:34,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:25:34,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:34,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:35,211 INFO L138 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39403 [2022-12-14 15:25:35,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:25:35,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:25:35,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:25:35,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:25:35,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:35,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:35,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:35,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:35,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:35,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:36,006 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:36,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:36,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:25:36,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:25:36,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:25:36,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:25:36,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (1/1) ... [2022-12-14 15:25:36,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:25:36,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:25:36,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:25:36,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24952b90-bd94-4039-b048-538d8422792c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:25:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:25:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 15:25:36,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 15:25:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 15:25:36,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 15:25:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 15:25:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 15:25:36,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 15:25:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 15:25:36,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 15:25:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 15:25:36,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 15:25:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 15:25:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 15:25:36,240 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 15:25:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 15:25:36,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 15:25:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 15:25:36,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 15:25:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 15:25:36,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 15:25:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 15:25:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 15:25:36,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 15:25:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 15:25:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 15:25:36,242 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 15:25:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 15:25:36,242 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 15:25:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:25:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:25:36,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:25:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 15:25:36,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 15:25:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 15:25:36,243 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 15:25:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 15:25:36,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 15:25:37,517 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:25:37,519 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:25:55,898 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:25:56,327 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:25:56,327 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:25:56,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:25:56 BoogieIcfgContainer [2022-12-14 15:25:56,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:25:56,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:25:56,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:25:56,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:25:56,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:25:32" (1/3) ... [2022-12-14 15:25:56,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ae3e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:25:56, skipping insertion in model container [2022-12-14 15:25:56,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:25:34" (2/3) ... [2022-12-14 15:25:56,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ae3e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:25:56, skipping insertion in model container [2022-12-14 15:25:56,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:25:56" (3/3) ... [2022-12-14 15:25:56,343 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-2.c [2022-12-14 15:25:56,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:25:56,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:25:56,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:25:56,541 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;@5d3e4614, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:25:56,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:25:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 11972 states, 7837 states have (on average 1.3205308153630215) internal successors, (10349), 7950 states have internal predecessors, (10349), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2022-12-14 15:25:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3937 [2022-12-14 15:25:56,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:25:56,936 INFO L195 NwaCegarLoop]: trace histogram [337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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15:25:56,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:25:56,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:25:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash -904032390, now seen corresponding path program 1 times [2022-12-14 15:25:56,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:25:56,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905423355] [2022-12-14 15:25:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:25:56,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms