./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/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_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/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_364f161e-3906-4869-ba7f-924ed40229c5/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 02d0ab19c61564f5abc0709934811896521a72f96ec1b9a0c41f20d28a391c3e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:59:40,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:59:40,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:59:40,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:59:40,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:59:40,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:59:40,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:59:40,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:59:40,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:59:40,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:59:40,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:59:40,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:59:40,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:59:40,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:59:40,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:59:40,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:59:40,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:59:40,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:59:40,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:59:40,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:59:40,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:59:40,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:59:40,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:59:40,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:59:40,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:59:40,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:59:40,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:59:40,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:59:40,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:59:40,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:59:40,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:59:40,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:59:40,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:59:40,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:59:40,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:59:40,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:59:40,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:59:40,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:59:40,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:59:40,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:59:40,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:59:40,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:59:40,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:59:40,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:59:40,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:59:40,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:59:40,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:59:40,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:59:40,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:59:40,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:59:40,407 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:59:40,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:59:40,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:59:40,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:59:40,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:59:40,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:59:40,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:59:40,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:59:40,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:59:40,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:59:40,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:59:40,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:59:40,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:59:40,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:59:40,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:59:40,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:59:40,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:59:40,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:59:40,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:59:40,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:59:40,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:59:40,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:59:40,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:59:40,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:59:40,412 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:59:40,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:59:40,413 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:59:40,413 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_364f161e-3906-4869-ba7f-924ed40229c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02d0ab19c61564f5abc0709934811896521a72f96ec1b9a0c41f20d28a391c3e [2022-12-13 16:59:40,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:59:40,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:59:40,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:59:40,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:59:40,631 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:59:40,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c [2022-12-13 16:59:43,261 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:59:43,608 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:59:43,608 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c [2022-12-13 16:59:43,639 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/data/d4782abf4/de0bef213b8840569855c25d569504ea/FLAGb15b0f104 [2022-12-13 16:59:43,650 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/data/d4782abf4/de0bef213b8840569855c25d569504ea [2022-12-13 16:59:43,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:59:43,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:59:43,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:59:43,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:59:43,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:59:43,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:59:43" (1/1) ... [2022-12-13 16:59:43,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d02429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:43, skipping insertion in model container [2022-12-13 16:59:43,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:59:43" (1/1) ... [2022-12-13 16:59:43,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:59:43,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:59:43,952 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_364f161e-3906-4869-ba7f-924ed40229c5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c[1674,1687] [2022-12-13 16:59:44,037 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 16:59:44,037 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 16:59:44,039 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-13 16:59:44,043 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:59:44,044 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:59:44,044 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-13 16:59:44,045 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:59:44,045 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:59:44,075 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-13 16:59:44,076 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-13 16:59:44,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:59:44,538 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:59:44,547 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_364f161e-3906-4869-ba7f-924ed40229c5/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.1.M4-2.c[1674,1687] [2022-12-13 16:59:44,557 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 16:59:44,557 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-13 16:59:44,558 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-13 16:59:44,559 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:59:44,559 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:59:44,559 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-13 16:59:44,560 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:59:44,560 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-13 16:59:44,562 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-13 16:59:44,562 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-13 16:59:45,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:59:45,114 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:59:45,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45 WrapperNode [2022-12-13 16:59:45,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:59:45,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:59:45,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:59:45,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:59:45,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:45,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:45,870 INFO L138 Inliner]: procedures = 57, calls = 17866, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 39403 [2022-12-13 16:59:45,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:59:45,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:59:45,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:59:45,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:59:45,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:45,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:46,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:46,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:46,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:46,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:46,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:46,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:46,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:59:46,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:59:46,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:59:46,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:59:46,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (1/1) ... [2022-12-13 16:59:46,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:59:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:59:46,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:59:46,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364f161e-3906-4869-ba7f-924ed40229c5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:59:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:59:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-13 16:59:46,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-13 16:59:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-13 16:59:46,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-13 16:59:46,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:59:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-13 16:59:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-13 16:59:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-13 16:59:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-13 16:59:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-13 16:59:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-13 16:59:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:59:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-13 16:59:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-13 16:59:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-13 16:59:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-13 16:59:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-13 16:59:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-13 16:59:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-13 16:59:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-13 16:59:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:59:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-13 16:59:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-13 16:59:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:59:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-13 16:59:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-13 16:59:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 16:59:46,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 16:59:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:59:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:59:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:59:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-13 16:59:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-13 16:59:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-13 16:59:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-13 16:59:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-13 16:59:46,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-13 16:59:47,835 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:59:47,837 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:00:05,345 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:00:05,376 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:00:05,376 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:00:05,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:00:05 BoogieIcfgContainer [2022-12-13 17:00:05,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:00:05,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:00:05,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:00:05,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:00:05,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:59:43" (1/3) ... [2022-12-13 17:00:05,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c110d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:00:05, skipping insertion in model container [2022-12-13 17:00:05,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:59:45" (2/3) ... [2022-12-13 17:00:05,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c110d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:00:05, skipping insertion in model container [2022-12-13 17:00:05,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:00:05" (3/3) ... [2022-12-13 17:00:05,392 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.1.M4-2.c [2022-12-13 17:00:05,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:00:05,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:00:05,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:00:05,580 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;@428e67e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:00:05,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:00:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 12013 states, 7878 states have (on average 1.3196242701193197) internal successors, (10396), 7991 states have internal predecessors, (10396), 4118 states have call successors, (4118), 15 states have call predecessors, (4118), 15 states have return successors, (4118), 4116 states have call predecessors, (4118), 4118 states have call successors, (4118) [2022-12-13 17:00:06,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4617 [2022-12-13 17:00:06,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:00:06,046 INFO L195 NwaCegarLoop]: trace histogram [337, 337, 337, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1] [2022-12-13 17:00:06,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:00:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:00:06,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1611338198, now seen corresponding path program 1 times [2022-12-13 17:00:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:00:06,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904456357] [2022-12-13 17:00:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:00:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms