./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/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_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/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_f0bc2391-101a-4693-8e90-ea3873a5a1c7/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 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 --- 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 22:42:42,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:42:42,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:42:42,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:42:42,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:42:42,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:42:42,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:42:42,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:42:42,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:42:42,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:42:42,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:42:42,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:42:42,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:42:42,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:42:42,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:42:42,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:42:42,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:42:42,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:42:42,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:42:42,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:42:42,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:42:42,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:42:42,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:42:42,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:42:42,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:42:42,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:42:42,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:42:42,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:42:42,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:42:42,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:42:42,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:42:42,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:42:42,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:42:42,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:42:42,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:42:42,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:42:42,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:42:42,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:42:42,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:42:42,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:42:42,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:42:42,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:42:42,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:42:42,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:42:42,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:42:42,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:42:42,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:42:42,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:42:42,476 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:42:42,477 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:42:42,477 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:42:42,477 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:42:42,478 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:42:42,478 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:42:42,479 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:42:42,479 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:42:42,479 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:42:42,479 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:42:42,480 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:42:42,480 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:42:42,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:42:42,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:42:42,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:42:42,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:42:42,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:42:42,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:42:42,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:42:42,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:42:42,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:42:42,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:42:42,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:42:42,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:42:42,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:42:42,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:42:42,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:42:42,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:42:42,486 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:42:42,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:42:42,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:42:42,487 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:42:42,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:42:42,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:42:42,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:42:42,489 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_f0bc2391-101a-4693-8e90-ea3873a5a1c7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 [2022-11-25 22:42:42,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:42:42,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:42:42,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:42:42,852 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:42:42,853 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:42:42,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2022-11-25 22:42:45,909 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:42:46,285 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:42:46,285 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2022-11-25 22:42:46,309 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/data/4db9daceb/81c92282e1cd4562a475294e8ccf8dcc/FLAG7c257c5df [2022-11-25 22:42:46,327 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/data/4db9daceb/81c92282e1cd4562a475294e8ccf8dcc [2022-11-25 22:42:46,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:42:46,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:42:46,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:42:46,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:42:46,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:42:46,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:42:46" (1/1) ... [2022-11-25 22:42:46,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9bae1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:46, skipping insertion in model container [2022-11-25 22:42:46,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:42:46" (1/1) ... [2022-11-25 22:42:46,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:42:46,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:42:46,586 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_f0bc2391-101a-4693-8e90-ea3873a5a1c7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c[1765,1778] [2022-11-25 22:42:46,651 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 22:42:46,652 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 22:42:46,654 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 22:42:46,659 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:42:46,660 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:42:46,661 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 22:42:46,662 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:42:46,662 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:42:46,678 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 22:42:46,680 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 22:42:46,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:42:46,993 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:42:47,011 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_f0bc2391-101a-4693-8e90-ea3873a5a1c7/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c[1765,1778] [2022-11-25 22:42:47,043 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 22:42:47,044 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-11-25 22:42:47,044 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-11-25 22:42:47,046 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:42:47,047 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:42:47,047 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-11-25 22:42:47,047 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:42:47,048 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-11-25 22:42:47,066 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-11-25 22:42:47,066 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-11-25 22:42:47,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:42:47,308 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:42:47,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47 WrapperNode [2022-11-25 22:42:47,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:42:47,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:42:47,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:42:47,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:42:47,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,521 INFO L138 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2022-11-25 22:42:47,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:42:47,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:42:47,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:42:47,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:42:47,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:42:47,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:42:47,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:42:47,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:42:47,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (1/1) ... [2022-11-25 22:42:47,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:42:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:42:47,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:42:47,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bc2391-101a-4693-8e90-ea3873a5a1c7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:42:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:42:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-25 22:42:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-25 22:42:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-25 22:42:47,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-25 22:42:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:42:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-25 22:42:48,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-25 22:42:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-25 22:42:48,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-25 22:42:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-11-25 22:42:48,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-11-25 22:42:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-25 22:42:48,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-25 22:42:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:42:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-25 22:42:48,002 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-25 22:42:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-25 22:42:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-25 22:42:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 22:42:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-25 22:42:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 22:42:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-25 22:42:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:42:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-25 22:42:48,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-25 22:42:48,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 22:42:48,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-11-25 22:42:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:42:48,007 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-25 22:42:48,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-25 22:42:48,007 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-25 22:42:48,007 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-25 22:42:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-11-25 22:42:48,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-11-25 22:42:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:42:48,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:42:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:42:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:42:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:42:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-25 22:42:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-25 22:42:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-25 22:42:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-25 22:42:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-25 22:42:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-25 22:42:48,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:42:48,578 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:42:57,879 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:42:58,103 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:42:58,103 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 22:42:58,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:42:58 BoogieIcfgContainer [2022-11-25 22:42:58,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:42:58,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:42:58,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:42:58,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:42:58,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:42:46" (1/3) ... [2022-11-25 22:42:58,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feb8369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:42:58, skipping insertion in model container [2022-11-25 22:42:58,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:42:47" (2/3) ... [2022-11-25 22:42:58,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feb8369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:42:58, skipping insertion in model container [2022-11-25 22:42:58,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:42:58" (3/3) ... [2022-11-25 22:42:58,122 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-2.c [2022-11-25 22:42:58,142 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:42:58,142 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:42:58,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:42:58,261 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;@10fcda91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:42:58,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:42:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 1899 states, 1104 states have (on average 1.2047101449275361) internal successors, (1330), 1109 states have internal predecessors, (1330), 774 states have call successors, (774), 19 states have call predecessors, (774), 19 states have return successors, (774), 772 states have call predecessors, (774), 774 states have call successors, (774) [2022-11-25 22:42:58,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2022-11-25 22:42:58,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:42:58,350 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 22:42:58,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:42:58,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:42:58,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1645130299, now seen corresponding path program 1 times [2022-11-25 22:42:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:42:58,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320127795] [2022-11-25 22:42:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:42:58,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms