./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/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_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/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_8334fe94-3be1-44f9-a4e2-47e32ecbc498/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 c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff --- 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 22:19:58,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:19:58,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:19:58,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:19:58,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:19:58,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:19:58,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:19:58,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:19:58,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:19:58,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:19:58,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:19:58,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:19:58,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:19:58,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:19:58,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:19:58,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:19:58,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:19:58,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:19:58,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:19:58,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:19:58,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:19:58,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:19:58,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:19:58,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:19:58,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:19:58,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:19:58,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:19:58,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:19:58,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:19:58,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:19:58,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:19:58,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:19:58,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:19:58,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:19:58,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:19:58,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:19:58,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:19:58,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:19:58,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:19:58,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:19:58,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:19:58,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:19:58,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:19:58,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:19:58,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:19:58,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:19:58,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:19:58,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:19:58,476 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:19:58,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:19:58,477 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:19:58,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:19:58,478 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:19:58,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:19:58,478 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:19:58,479 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:19:58,479 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:19:58,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:19:58,479 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:19:58,479 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:19:58,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:19:58,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:19:58,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:19:58,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:19:58,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:19:58,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:19:58,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:19:58,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:19:58,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:19:58,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:19:58,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:19:58,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:19:58,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:19:58,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:19:58,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:58,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:19:58,484 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:19:58,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:19:58,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:19:58,484 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:19:58,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:19:58,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:19:58,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:19:58,485 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_8334fe94-3be1-44f9-a4e2-47e32ecbc498/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff [2022-11-25 22:19:58,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:19:58,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:19:58,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:19:58,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:19:58,861 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:19:58,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2022-11-25 22:20:01,871 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:20:02,261 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:20:02,261 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2022-11-25 22:20:02,281 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/data/171590649/2ca42d5cc21d4e81a75a4f5dd0f0ff70/FLAG70b3f6164 [2022-11-25 22:20:02,303 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/data/171590649/2ca42d5cc21d4e81a75a4f5dd0f0ff70 [2022-11-25 22:20:02,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:20:02,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:20:02,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:20:02,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:20:02,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:20:02,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:20:02" (1/1) ... [2022-11-25 22:20:02,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac6b074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:02, skipping insertion in model container [2022-11-25 22:20:02,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:20:02" (1/1) ... [2022-11-25 22:20:02,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:20:02,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:20:02,721 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_8334fe94-3be1-44f9-a4e2-47e32ecbc498/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2022-11-25 22:20:02,825 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 22:20:02,826 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 22:20:02,831 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 22:20:02,850 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:20:02,851 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:20:02,852 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 22:20:02,853 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:20:02,854 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:20:02,876 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 22:20:02,877 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 22:20:03,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:20:03,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:20:03,245 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_8334fe94-3be1-44f9-a4e2-47e32ecbc498/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2022-11-25 22:20:03,275 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 22:20:03,279 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 22:20:03,292 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 22:20:03,300 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:20:03,300 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:20:03,301 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 22:20:03,301 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:20:03,302 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:20:03,306 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 22:20:03,319 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 22:20:03,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:20:03,549 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:20:03,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03 WrapperNode [2022-11-25 22:20:03,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:20:03,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:20:03,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:20:03,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:20:03,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:03,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:03,795 INFO L138 Inliner]: procedures = 56, calls = 2072, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4032 [2022-11-25 22:20:03,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:20:03,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:20:03,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:20:03,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:20:03,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:03,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:03,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:03,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:03,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:04,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:04,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:04,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:04,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:20:04,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:20:04,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:20:04,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:20:04,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (1/1) ... [2022-11-25 22:20:04,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:20:04,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:04,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:20:04,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8334fe94-3be1-44f9-a4e2-47e32ecbc498/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:20:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:20:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-25 22:20:04,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-25 22:20:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-25 22:20:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-25 22:20:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:20:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-25 22:20:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-25 22:20:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-25 22:20:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-25 22:20:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-25 22:20:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-25 22:20:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:20:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-25 22:20:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-25 22:20:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-25 22:20:04,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-25 22:20:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 22:20:04,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 22:20:04,221 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 22:20:04,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 22:20:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:20:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-25 22:20:04,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-25 22:20:04,222 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 22:20:04,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 22:20:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:20:04,223 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-25 22:20:04,224 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-25 22:20:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-25 22:20:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-25 22:20:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:20:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:20:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:20:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:20:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:20:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-25 22:20:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-25 22:20:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-25 22:20:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-25 22:20:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-25 22:20:04,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-25 22:20:04,757 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:20:04,772 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:20:12,512 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:20:12,704 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:20:12,704 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:20:12,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:20:12 BoogieIcfgContainer [2022-11-25 22:20:12,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:20:12,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:20:12,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:20:12,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:20:12,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:20:02" (1/3) ... [2022-11-25 22:20:12,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bec311e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:20:12, skipping insertion in model container [2022-11-25 22:20:12,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:20:03" (2/3) ... [2022-11-25 22:20:12,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bec311e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:20:12, skipping insertion in model container [2022-11-25 22:20:12,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:20:12" (3/3) ... [2022-11-25 22:20:12,723 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-1.c [2022-11-25 22:20:12,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:20:12,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:20:12,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:20:12,862 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;@6311c794, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:20:12,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:20:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 1618 states, 959 states have (on average 1.2283628779979145) internal successors, (1178), 964 states have internal predecessors, (1178), 640 states have call successors, (640), 17 states have call predecessors, (640), 17 states have return successors, (640), 638 states have call predecessors, (640), 640 states have call successors, (640) [2022-11-25 22:20:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2022-11-25 22:20:12,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:12,949 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, 1, 1] [2022-11-25 22:20:12,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:20:12,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash 516111169, now seen corresponding path program 1 times [2022-11-25 22:20:12,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:12,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872318561] [2022-11-25 22:20:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms