./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 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_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/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_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/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_97875db7-e85d-4fcc-829e-ab387a7f3154/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_97875db7-e85d-4fcc-829e-ab387a7f3154/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 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-2329fc7 [2022-12-14 05:00:12,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:00:12,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:00:12,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:00:12,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:00:12,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:00:12,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:00:12,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:00:12,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:00:12,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:00:12,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:00:12,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:00:12,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:00:12,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:00:12,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:00:12,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:00:12,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:00:12,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:00:12,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:00:12,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:00:12,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:00:12,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:00:12,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:00:12,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:00:12,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:00:12,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:00:12,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:00:12,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:00:12,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:00:12,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:00:12,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:00:12,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:00:12,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:00:12,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:00:12,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:00:12,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:00:12,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:00:12,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:00:12,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:00:12,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:00:12,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:00:12,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:00:12,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:00:12,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:00:12,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:00:12,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:00:12,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:00:12,732 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:00:12,732 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:00:12,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:00:12,732 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:00:12,732 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:00:12,732 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:00:12,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:00:12,733 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:00:12,733 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:00:12,733 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:00:12,733 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:00:12,733 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:00:12,734 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:00:12,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:00:12,734 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:00:12,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:00:12,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:00:12,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:00:12,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:00:12,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:00:12,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:00:12,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:00:12,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:00:12,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:00:12,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:00:12,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:00:12,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:00:12,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:00:12,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:00:12,740 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:00:12,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:00:12,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:00:12,741 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:00:12,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:00:12,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:00:12,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:00:12,741 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_97875db7-e85d-4fcc-829e-ab387a7f3154/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 564efe4dc14fe185d57e5aeec9a3ab580efe33ed3c6c6b76402e1a3f93fbdd78 [2022-12-14 05:00:12,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:00:12,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:00:12,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:00:12,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:00:12,922 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:00:12,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2022-12-14 05:00:15,514 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:00:15,748 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:00:15,749 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c [2022-12-14 05:00:15,762 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/data/df0d44365/1726243ba56d4038aae0098cb710215f/FLAGd01614c59 [2022-12-14 05:00:15,773 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/data/df0d44365/1726243ba56d4038aae0098cb710215f [2022-12-14 05:00:15,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:00:15,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:00:15,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:00:15,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:00:15,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:00:15,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:00:15" (1/1) ... [2022-12-14 05:00:15,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca61e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:15, skipping insertion in model container [2022-12-14 05:00:15,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:00:15" (1/1) ... [2022-12-14 05:00:15,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:00:15,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:00:15,952 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_97875db7-e85d-4fcc-829e-ab387a7f3154/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c[1765,1778] [2022-12-14 05:00:15,995 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:00:15,995 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:00:15,997 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 05:00:16,000 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:00:16,001 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:00:16,001 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 05:00:16,001 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:00:16,002 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:00:16,012 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 05:00:16,012 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 05:00:16,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:00:16,176 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:00:16,185 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_97875db7-e85d-4fcc-829e-ab387a7f3154/sv-benchmarks/c/seq-mthreaded/rekh_nxt.2.M4-2.c[1765,1778] [2022-12-14 05:00:16,198 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:00:16,198 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_count [2022-12-14 05:00:16,199 WARN L623 FunctionHandler]: Unknown extern function ecrobot_sound_tone [2022-12-14 05:00:16,200 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:00:16,200 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:00:16,201 WARN L623 FunctionHandler]: Unknown extern function ecrobot_bt_data_logger [2022-12-14 05:00:16,201 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:00:16,201 WARN L623 FunctionHandler]: Unknown extern function nxt_motor_set_speed [2022-12-14 05:00:16,204 WARN L623 FunctionHandler]: Unknown extern function ecrobot_status_monitor [2022-12-14 05:00:16,205 WARN L623 FunctionHandler]: Unknown extern function write_mode_on_lcd [2022-12-14 05:00:16,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:00:16,365 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:00:16,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16 WrapperNode [2022-12-14 05:00:16,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:00:16,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:00:16,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:00:16,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:00:16,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,528 INFO L138 Inliner]: procedures = 60, calls = 2543, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4814 [2022-12-14 05:00:16,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:00:16,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:00:16,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:00:16,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:00:16,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,644 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:00:16,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:00:16,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:00:16,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:00:16,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (1/1) ... [2022-12-14 05:00:16,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:00:16,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:00:16,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:00:16,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97875db7-e85d-4fcc-829e-ab387a7f3154/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:00:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:00:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 05:00:16,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 05:00:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-12-14 05:00:16,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-12-14 05:00:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:00:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 05:00:16,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 05:00:16,755 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 05:00:16,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 05:00:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_observer_obstacle_flag [2022-12-14 05:00:16,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_observer_obstacle_flag [2022-12-14 05:00:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-12-14 05:00:16,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-12-14 05:00:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:00:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 05:00:16,756 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 05:00:16,756 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-12-14 05:00:16,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-12-14 05:00:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 05:00:16,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-12-14 05:00:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 05:00:16,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-12-14 05:00:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:00:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-12-14 05:00:16,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-12-14 05:00:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 05:00:16,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_Background [2022-12-14 05:00:16,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:00:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 05:00:16,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 05:00:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-12-14 05:00:16,758 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-12-14 05:00:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-12-14 05:00:16,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-12-14 05:00:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 05:00:16,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 05:00:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:00:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:00:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:00:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-12-14 05:00:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-12-14 05:00:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 05:00:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 05:00:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-12-14 05:00:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-12-14 05:00:17,084 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:00:17,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:00:24,635 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:00:24,787 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:00:24,787 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:00:24,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:00:24 BoogieIcfgContainer [2022-12-14 05:00:24,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:00:24,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:00:24,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:00:24,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:00:24,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:00:15" (1/3) ... [2022-12-14 05:00:24,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8200ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:00:24, skipping insertion in model container [2022-12-14 05:00:24,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:16" (2/3) ... [2022-12-14 05:00:24,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8200ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:00:24, skipping insertion in model container [2022-12-14 05:00:24,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:00:24" (3/3) ... [2022-12-14 05:00:24,798 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_nxt.2.M4-2.c [2022-12-14 05:00:24,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:00:24,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:00:24,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:00:24,883 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;@5837889c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:00:24,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:00:24,891 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) [2022-12-14 05:00:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2022-12-14 05:00:24,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:00:24,929 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] [2022-12-14 05:00:24,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:00:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:00:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1447973986, now seen corresponding path program 1 times [2022-12-14 05:00:24,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:00:24,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044517888] [2022-12-14 05:00:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:00:24,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms