./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.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_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/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_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/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_e49f8304-b405-444a-aa48-1812071554e3/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 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f --- 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 09:52:55,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:52:55,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:52:55,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:52:55,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:52:55,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:52:55,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:52:55,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:52:55,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:52:55,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:52:55,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:52:55,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:52:55,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:52:55,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:52:55,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:52:55,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:52:55,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:52:55,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:52:55,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:52:55,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:52:55,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:52:55,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:52:55,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:52:55,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:52:55,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:52:55,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:52:55,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:52:55,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:52:55,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:52:55,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:52:55,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:52:55,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:52:55,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:52:55,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:52:55,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:52:55,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:52:55,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:52:55,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:52:55,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:52:55,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:52:55,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:52:55,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:52:55,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:52:55,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:52:55,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:52:55,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:52:55,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:52:55,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:52:55,351 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:52:55,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:52:55,351 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:52:55,352 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:52:55,352 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:52:55,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:52:55,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:52:55,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:52:55,352 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:52:55,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:52:55,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:52:55,353 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:52:55,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:52:55,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:52:55,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:52:55,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:52:55,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:52:55,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:52:55,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:52:55,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:52:55,355 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:52:55,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:52:55,355 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:52:55,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:52:55,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:52:55,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:52:55,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:52:55,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:52:55,356 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:52:55,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:52:55,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:52:55,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:52:55,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:52:55,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:52:55,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:52:55,357 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_e49f8304-b405-444a-aa48-1812071554e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 436e6e57c04bd43264564f478c3aa92ec3799e6c36d71ae9bac6692f2873338f [2022-12-14 09:52:55,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:52:55,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:52:55,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:52:55,558 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:52:55,558 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:52:55,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2022-12-14 09:52:58,084 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:52:58,430 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:52:58,430 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c [2022-12-14 09:52:58,446 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/data/bba83f0de/45f8357637914d548757e13c1d9c547f/FLAG08a7fdc7e [2022-12-14 09:52:58,669 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/data/bba83f0de/45f8357637914d548757e13c1d9c547f [2022-12-14 09:52:58,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:52:58,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:52:58,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:52:58,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:52:58,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:52:58,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:52:58" (1/1) ... [2022-12-14 09:52:58,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f1d8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:58, skipping insertion in model container [2022-12-14 09:52:58,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:52:58" (1/1) ... [2022-12-14 09:52:58,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:52:58,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:52:58,862 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_e49f8304-b405-444a-aa48-1812071554e3/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2022-12-14 09:52:59,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:52:59,300 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:52:59,314 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_e49f8304-b405-444a-aa48-1812071554e3/sv-benchmarks/c/seq-mthreaded/rekh_ctm.4.c[1868,1881] [2022-12-14 09:52:59,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:52:59,548 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:52:59,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59 WrapperNode [2022-12-14 09:52:59,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:52:59,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:52:59,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:52:59,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:52:59,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,762 INFO L138 Inliner]: procedures = 99, calls = 2906, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8512 [2022-12-14 09:52:59,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:52:59,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:52:59,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:52:59,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:52:59,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,902 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:52:59,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:52:59,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:52:59,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:52:59,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (1/1) ... [2022-12-14 09:52:59,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:52:59,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:52:59,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:52:59,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e49f8304-b405-444a-aa48-1812071554e3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:52:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-12-14 09:52:59,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-12-14 09:52:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-12-14 09:52:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-12-14 09:52:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:52:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-12-14 09:52:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-12-14 09:52:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-12-14 09:52:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-12-14 09:52:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-12-14 09:52:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-12-14 09:52:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-12-14 09:52:59,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-12-14 09:52:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-12-14 09:52:59,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-12-14 09:52:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-12-14 09:52:59,990 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-12-14 09:52:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-12-14 09:52:59,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-12-14 09:52:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-12-14 09:52:59,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-12-14 09:52:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:52:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-14 09:52:59,991 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-14 09:52:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-12-14 09:52:59,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-12-14 09:52:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-12-14 09:52:59,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-12-14 09:52:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-12-14 09:52:59,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-12-14 09:52:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-12-14 09:52:59,991 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-12-14 09:52:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-12-14 09:52:59,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-12-14 09:52:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-12-14 09:52:59,992 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-12-14 09:52:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:52:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-12-14 09:52:59,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-12-14 09:52:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-12-14 09:52:59,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-12-14 09:52:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-12-14 09:52:59,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-12-14 09:52:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-12-14 09:52:59,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-12-14 09:52:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-12-14 09:52:59,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-12-14 09:52:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-12-14 09:52:59,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-12-14 09:52:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-12-14 09:52:59,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-12-14 09:52:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-12-14 09:52:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-12-14 09:52:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-12-14 09:52:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-12-14 09:52:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-12-14 09:52:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-12-14 09:52:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-12-14 09:52:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-12-14 09:52:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-12-14 09:52:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-12-14 09:52:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-12-14 09:52:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-12-14 09:52:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-12-14 09:52:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-12-14 09:52:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-12-14 09:52:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-12-14 09:52:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-12-14 09:52:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-12-14 09:52:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-12-14 09:52:59,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-12-14 09:52:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-12-14 09:52:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-12-14 09:52:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-12-14 09:52:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-12-14 09:52:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-12-14 09:52:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-12-14 09:52:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-12-14 09:52:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-12-14 09:52:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-12-14 09:52:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-12-14 09:52:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-12-14 09:52:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-12-14 09:52:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-12-14 09:52:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-12-14 09:52:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-12-14 09:52:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-12-14 09:52:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-12-14 09:52:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-12-14 09:52:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:52:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-12-14 09:52:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-12-14 09:52:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:52:59,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:53:00,431 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:53:00,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:53:21,032 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:53:26,125 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:53:26,125 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 09:53:26,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:53:26 BoogieIcfgContainer [2022-12-14 09:53:26,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:53:26,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:53:26,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:53:26,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:53:26,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:52:58" (1/3) ... [2022-12-14 09:53:26,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15378140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:53:26, skipping insertion in model container [2022-12-14 09:53:26,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:52:59" (2/3) ... [2022-12-14 09:53:26,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15378140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:53:26, skipping insertion in model container [2022-12-14 09:53:26,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:53:26" (3/3) ... [2022-12-14 09:53:26,134 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.4.c [2022-12-14 09:53:26,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:53:26,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:53:26,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:53:26,207 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;@74d6d7ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:53:26,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:53:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 967 states, 613 states have (on average 1.3833605220228384) internal successors, (848), 637 states have internal predecessors, (848), 308 states have call successors, (308), 44 states have call predecessors, (308), 44 states have return successors, (308), 298 states have call predecessors, (308), 308 states have call successors, (308) [2022-12-14 09:53:26,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 09:53:26,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:53:26,220 INFO L195 NwaCegarLoop]: trace histogram [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 09:53:26,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:53:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:53:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2128396932, now seen corresponding path program 1 times [2022-12-14 09:53:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:53:26,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275544814] [2022-12-14 09:53:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:53:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms