./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.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_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh --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 d1acaf5881e7bc6fb96063443cb57a4aeaaabd457c070b840e9f79d5e20a5abf --- 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 [2022-12-14 12:12:35,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:12:35,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:12:35,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:12:35,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:12:35,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:12:35,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:12:35,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:12:35,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:12:35,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:12:35,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:12:35,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:12:35,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:12:35,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:12:35,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:12:35,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:12:35,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:12:35,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:12:35,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:12:35,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:12:35,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:12:35,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:12:35,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:12:35,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:12:35,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:12:35,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:12:35,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:12:35,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:12:35,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:12:35,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:12:35,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:12:35,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:12:35,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:12:35,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:12:35,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:12:35,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:12:35,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:12:35,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:12:35,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:12:35,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:12:35,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:12:35,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:12:35,772 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:12:35,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:12:35,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:12:35,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:12:35,773 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:12:35,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:12:35,774 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:12:35,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:12:35,774 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:12:35,774 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:12:35,774 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:12:35,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:12:35,774 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:12:35,775 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:12:35,775 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:12:35,775 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:12:35,775 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:12:35,775 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:12:35,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:12:35,776 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:12:35,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:12:35,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:12:35,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:12:35,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:12:35,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:12:35,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:12:35,777 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:12:35,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:12:35,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:12:35,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:12:35,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:12:35,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:12:35,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:12:35,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:12:35,778 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:12:35,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:12:35,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:12:35,779 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:12:35,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:12:35,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:12:35,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:12:35,779 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_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1acaf5881e7bc6fb96063443cb57a4aeaaabd457c070b840e9f79d5e20a5abf [2022-12-14 12:12:35,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:12:35,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:12:36,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:12:36,002 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:12:36,002 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:12:36,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2022-12-14 12:12:38,565 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:12:38,796 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:12:38,797 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c [2022-12-14 12:12:38,810 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/data/18cd0d92a/e3ae94b3110e4b1f852658a01f8e23b1/FLAGf7f452864 [2022-12-14 12:12:39,143 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/data/18cd0d92a/e3ae94b3110e4b1f852658a01f8e23b1 [2022-12-14 12:12:39,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:12:39,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:12:39,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:12:39,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:12:39,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:12:39,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2670a61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39, skipping insertion in model container [2022-12-14 12:12:39,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:12:39,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:12:39,330 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_c7dc883d-5908-4221-80a5-9c3892e27f65/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c[2017,2030] [2022-12-14 12:12:39,371 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 12:12:39,372 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 12:12:39,373 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 12:12:39,377 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 12:12:39,377 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 12:12:39,378 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 12:12:39,378 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 12:12:39,378 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 12:12:39,389 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 12:12:39,389 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 12:12:39,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:12:39,520 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:12:39,530 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_c7dc883d-5908-4221-80a5-9c3892e27f65/sv-benchmarks/c/seq-mthreaded/rekcba_nxt.3.M1.c[2017,2030] [2022-12-14 12:12:39,541 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 12:12:39,542 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 12:12:39,542 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 12:12:39,544 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 12:12:39,544 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 12:12:39,544 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 12:12:39,544 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 12:12:39,545 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 12:12:39,548 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 12:12:39,548 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 12:12:39,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:12:39,651 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:12:39,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39 WrapperNode [2022-12-14 12:12:39,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:12:39,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:12:39,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:12:39,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:12:39,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,804 INFO L138 Inliner]: procedures = 62, calls = 1929, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 4123 [2022-12-14 12:12:39,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:12:39,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:12:39,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:12:39,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:12:39,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,934 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:12:39,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:12:39,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:12:39,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:12:39,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (1/1) ... [2022-12-14 12:12:39,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:12:39,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:12:39,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:12:39,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7dc883d-5908-4221-80a5-9c3892e27f65/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:12:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:12:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 12:12:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 12:12:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 12:12:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 12:12:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:12:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 12:12:40,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 12:12:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 12:12:40,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 12:12:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-12-14 12:12:40,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-12-14 12:12:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 12:12:40,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 12:12:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:12:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 12:12:40,021 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 12:12:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 12:12:40,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 12:12:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 12:12:40,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 12:12:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 12:12:40,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 12:12:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:12:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 12:12:40,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 12:12:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:12:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 12:12:40,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 12:12:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 12:12:40,023 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 12:12:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-12-14 12:12:40,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-12-14 12:12:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 12:12:40,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 12:12:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:12:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:12:40,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:12:40,023 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 12:12:40,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 12:12:40,024 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 12:12:40,024 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 12:12:40,024 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 12:12:40,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 12:12:40,334 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:12:40,336 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:12:46,381 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:12:46,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:12:46,515 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:12:46,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:12:46 BoogieIcfgContainer [2022-12-14 12:12:46,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:12:46,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:12:46,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:12:46,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:12:46,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:12:39" (1/3) ... [2022-12-14 12:12:46,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbba331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:12:46, skipping insertion in model container [2022-12-14 12:12:46,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:12:39" (2/3) ... [2022-12-14 12:12:46,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbba331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:12:46, skipping insertion in model container [2022-12-14 12:12:46,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:12:46" (3/3) ... [2022-12-14 12:12:46,526 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_nxt.3.M1.c [2022-12-14 12:12:46,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:12:46,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:12:46,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:12:46,612 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;@4a8d366, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:12:46,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:12:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 1236 states, 761 states have (on average 1.2772667542706964) internal successors, (972), 792 states have internal predecessors, (972), 455 states have call successors, (455), 18 states have call predecessors, (455), 18 states have return successors, (455), 453 states have call predecessors, (455), 455 states have call successors, (455) [2022-12-14 12:12:46,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-12-14 12:12:46,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:12:46,668 INFO L195 NwaCegarLoop]: trace histogram [111, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:12:46,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:12:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:12:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1513484241, now seen corresponding path program 1 times [2022-12-14 12:12:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:12:46,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550030882] [2022-12-14 12:12:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:12:46,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms