./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8 --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 Automizer --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-2329fc7 [2022-12-13 16:22:21,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:22:21,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:22:21,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:22:21,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:22:21,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:22:21,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:22:21,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:22:21,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:22:21,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:22:21,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:22:21,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:22:21,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:22:21,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:22:21,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:22:21,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:22:21,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:22:21,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:22:21,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:22:21,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:22:21,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:22:21,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:22:21,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:22:21,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:22:21,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:22:21,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:22:21,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:22:21,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:22:21,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:22:21,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:22:21,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:22:21,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:22:21,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:22:21,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:22:21,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:22:21,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:22:21,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:22:21,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:22:21,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:22:21,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:22:21,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:22:21,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:22:21,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:22:21,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:22:21,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:22:21,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:22:21,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:22:21,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:22:21,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:22:21,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:22:21,406 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:22:21,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:22:21,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:22:21,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:22:21,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:22:21,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:22:21,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:22:21,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:22:21,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:22:21,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:22:21,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:22:21,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:22:21,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:22:21,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:22:21,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:22:21,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:22:21,409 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:22:21,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:22:21,409 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:22:21,409 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3428ae6a0cff233befb72334b90ad9e2070ed1c51acfcfa2fe6d4fef2ceb1ff [2022-12-13 16:22:21,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:22:21,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:22:21,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:22:21,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:22:21,598 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:22:21,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2022-12-13 16:22:24,246 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:22:24,489 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:22:24,489 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c [2022-12-13 16:22:24,505 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/data/e40fcc74f/c40ead44d1044d8d9e18a37b6c104f79/FLAG28cc8238a [2022-12-13 16:22:24,519 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/data/e40fcc74f/c40ead44d1044d8d9e18a37b6c104f79 [2022-12-13 16:22:24,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:22:24,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:22:24,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:22:24,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:22:24,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:22:24,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:22:24" (1/1) ... [2022-12-13 16:22:24,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16fd5d3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:24, skipping insertion in model container [2022-12-13 16:22:24,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:22:24" (1/1) ... [2022-12-13 16:22:24,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:22:24,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:22:24,745 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_c676d255-0ede-4146-a278-bcebe54cd643/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2022-12-13 16:22:24,801 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 16:22:24,802 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 16:22:24,804 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-13 16:22:24,809 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:22:24,809 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:22:24,810 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-13 16:22:24,810 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:22:24,811 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:22:24,822 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-13 16:22:24,823 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-13 16:22:25,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:22:25,024 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:22:25,037 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_c676d255-0ede-4146-a278-bcebe54cd643/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-1.c[1682,1695] [2022-12-13 16:22:25,050 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 16:22:25,050 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 16:22:25,051 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-13 16:22:25,052 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:22:25,053 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:22:25,053 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-13 16:22:25,053 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:22:25,054 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:22:25,057 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-13 16:22:25,058 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-13 16:22:25,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:22:25,181 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:22:25,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25 WrapperNode [2022-12-13 16:22:25,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:22:25,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:22:25,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:22:25,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:22:25,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,327 INFO L138 Inliner]: procedures = 56, calls = 2072, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4032 [2022-12-13 16:22:25,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:22:25,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:22:25,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:22:25,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:22:25,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,413 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:22:25,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:22:25,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:22:25,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:22:25,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (1/1) ... [2022-12-13 16:22:25,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:22:25,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:22:25,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:22:25,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c676d255-0ede-4146-a278-bcebe54cd643/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:22:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:22:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-13 16:22:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-13 16:22:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-13 16:22:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-13 16:22:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:22:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-13 16:22:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-13 16:22:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-13 16:22:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-13 16:22:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-13 16:22:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-13 16:22:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:22:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-13 16:22:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-13 16:22:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-13 16:22:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-13 16:22:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-12-13 16:22:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-13 16:22:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-13 16:22:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-13 16:22:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-13 16:22:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-13 16:22:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 16:22:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 16:22:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:22:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:22:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:22:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-13 16:22:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-13 16:22:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-13 16:22:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-13 16:22:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-13 16:22:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-13 16:22:25,803 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:22:25,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:22:32,384 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:22:32,400 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:22:32,400 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 16:22:32,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:22:32 BoogieIcfgContainer [2022-12-13 16:22:32,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:22:32,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:22:32,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:22:32,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:22:32,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:22:24" (1/3) ... [2022-12-13 16:22:32,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d83e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:22:32, skipping insertion in model container [2022-12-13 16:22:32,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:22:25" (2/3) ... [2022-12-13 16:22:32,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d83e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:22:32, skipping insertion in model container [2022-12-13 16:22:32,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:22:32" (3/3) ... [2022-12-13 16:22:32,411 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-1.c [2022-12-13 16:22:32,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:22:32,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:22:32,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:22:32,487 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=PETRI_NET, 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;@2cfc2af2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:22:32,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:22:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 1661 states, 1002 states have (on average 1.2255489021956087) internal successors, (1228), 1007 states have internal predecessors, (1228), 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) [2022-12-13 16:22:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2022-12-13 16:22:32,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:22:32,561 INFO L195 NwaCegarLoop]: trace histogram [209, 209, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:22:32,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:22:32,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:22:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1891072513, now seen corresponding path program 1 times [2022-12-13 16:22:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:22:32,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534711211] [2022-12-13 16:22:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:22:32,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms