./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:16:35,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:16:35,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:16:35,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:16:35,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:16:35,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:16:35,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:16:35,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:16:35,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:16:35,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:16:35,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:16:35,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:16:35,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:16:35,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:16:35,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:16:35,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:16:35,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:16:35,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:16:35,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:16:35,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:16:35,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:16:35,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:16:35,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:16:35,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:16:35,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:16:35,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:16:35,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:16:35,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:16:35,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:16:35,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:16:35,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:16:35,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:16:35,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:16:35,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:16:35,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:16:35,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:16:35,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:16:35,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:16:35,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:16:35,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:16:35,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:16:35,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:16:35,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:16:35,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:16:35,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:16:35,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:16:35,346 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:16:35,346 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:16:35,346 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:16:35,347 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:16:35,347 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:16:35,347 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:16:35,349 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:16:35,349 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:16:35,349 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:16:35,350 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:16:35,350 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:16:35,350 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:16:35,351 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:16:35,351 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:16:35,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:16:35,353 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:16:35,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:16:35,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:16:35,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:16:35,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:16:35,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:16:35,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:16:35,355 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:16:35,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:16:35,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:16:35,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:16:35,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:16:35,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:16:35,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:16:35,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:16:35,358 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:16:35,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:16:35,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:16:35,359 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:16:35,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:16:35,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:16:35,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:16:35,361 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_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ce8f2917f3c045e2dd62444de112f0f7cfab2516baa3561b477720f1fd4fa0b [2022-11-25 23:16:35,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:16:35,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:16:35,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:16:35,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:16:35,765 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:16:35,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2022-11-25 23:16:39,191 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:16:39,606 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:16:39,617 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c [2022-11-25 23:16:39,640 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/data/043aed238/ef5c7a51c8da4674ba9430ee0655784c/FLAG8031dacc6 [2022-11-25 23:16:39,659 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/data/043aed238/ef5c7a51c8da4674ba9430ee0655784c [2022-11-25 23:16:39,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:16:39,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:16:39,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:16:39,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:16:39,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:16:39,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:16:39" (1/1) ... [2022-11-25 23:16:39,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3909a432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:39, skipping insertion in model container [2022-11-25 23:16:39,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:16:39" (1/1) ... [2022-11-25 23:16:39,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:16:39,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:16:40,051 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_a4c9c20b-474f-4248-96a9-fd217afa4b78/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c[1937,1950] [2022-11-25 23:16:40,180 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:16:40,181 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:16:40,184 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 23:16:40,189 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:16:40,190 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:16:40,191 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 23:16:40,192 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:16:40,192 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:16:40,208 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 23:16:40,209 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 23:16:40,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:16:40,623 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:16:40,662 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_a4c9c20b-474f-4248-96a9-fd217afa4b78/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.2.M1-2.c[1937,1950] [2022-11-25 23:16:40,692 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:16:40,695 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 23:16:40,696 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 23:16:40,699 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:16:40,699 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:16:40,700 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 23:16:40,700 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:16:40,701 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 23:16:40,706 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 23:16:40,707 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 23:16:41,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:16:41,079 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:16:41,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41 WrapperNode [2022-11-25 23:16:41,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:16:41,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:16:41,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:16:41,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:16:41,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,319 INFO L138 Inliner]: procedures = 58, calls = 1758, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 3840 [2022-11-25 23:16:41,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:16:41,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:16:41,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:16:41,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:16:41,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,509 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:16:41,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:16:41,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:16:41,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:16:41,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (1/1) ... [2022-11-25 23:16:41,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:16:41,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:41,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:16:41,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c9c20b-474f-4248-96a9-fd217afa4b78/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:16:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:16:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-25 23:16:41,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-25 23:16:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-25 23:16:41,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-25 23:16:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:16:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-25 23:16:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-25 23:16:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-25 23:16:41,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-25 23:16:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-25 23:16:41,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-25 23:16:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:16:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-25 23:16:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-25 23:16:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-25 23:16:41,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-25 23:16:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 23:16:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 23:16:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 23:16:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 23:16:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:16:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 23:16:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 23:16:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:16:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-25 23:16:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-25 23:16:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-25 23:16:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-25 23:16:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:16:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:16:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:16:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:16:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:16:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-25 23:16:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-25 23:16:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-25 23:16:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-25 23:16:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-25 23:16:41,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-25 23:16:42,264 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:16:42,266 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:16:49,726 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:16:50,032 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:16:50,032 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:16:50,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:50 BoogieIcfgContainer [2022-11-25 23:16:50,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:16:50,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:16:50,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:16:50,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:16:50,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:16:39" (1/3) ... [2022-11-25 23:16:50,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73140d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:16:50, skipping insertion in model container [2022-11-25 23:16:50,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:41" (2/3) ... [2022-11-25 23:16:50,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73140d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:16:50, skipping insertion in model container [2022-11-25 23:16:50,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:50" (3/3) ... [2022-11-25 23:16:50,050 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.2.M1-2.c [2022-11-25 23:16:50,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:16:50,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:16:50,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:16:50,176 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;@3bee4920, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:16:50,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:16:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 1151 states, 714 states have (on average 1.2857142857142858) internal successors, (918), 746 states have internal predecessors, (918), 419 states have call successors, (419), 16 states have call predecessors, (419), 16 states have return successors, (419), 417 states have call predecessors, (419), 419 states have call successors, (419) [2022-11-25 23:16:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2022-11-25 23:16:50,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:50,266 INFO L195 NwaCegarLoop]: trace histogram [85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:50,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:50,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2014328956, now seen corresponding path program 1 times [2022-11-25 23:16:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:50,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471895602] [2022-11-25 23:16:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms