./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI --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 a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 --- 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-5e519f3 [2022-11-03 01:40:17,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:40:17,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:40:17,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:40:17,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:40:17,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:40:17,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:40:17,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:40:17,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:40:17,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:40:17,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:40:17,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:40:17,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:40:17,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:40:17,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:40:17,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:40:17,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:40:17,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:40:17,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:40:17,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:40:17,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:40:17,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:40:17,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:40:17,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:40:17,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:40:17,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:40:17,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:40:17,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:40:17,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:40:17,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:40:17,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:40:17,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:40:17,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:40:17,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:40:17,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:40:17,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:40:17,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:40:17,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:40:17,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:40:17,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:40:17,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:40:17,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:40:17,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:40:17,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:40:17,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:40:17,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:40:17,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:40:17,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:40:17,362 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:40:17,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:40:17,363 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:40:17,363 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:40:17,365 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:40:17,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:40:17,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:40:17,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:40:17,366 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:40:17,366 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:40:17,366 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:40:17,366 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:40:17,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:40:17,368 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:40:17,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:40:17,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:40:17,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:40:17,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:40:17,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:40:17,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:40:17,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:40:17,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:40:17,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:40:17,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:40:17,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:40:17,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:40:17,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:40:17,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:40:17,372 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:40:17,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:40:17,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:40:17,372 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:40:17,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:40:17,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:40:17,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:40:17,374 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_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6fb157ae499b257dadbdfdc38e5d4454494023bad31f4939a5eb0b429ddb260 [2022-11-03 01:40:17,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:40:17,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:40:17,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:40:17,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:40:17,700 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:40:17,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2022-11-03 01:40:17,774 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/data/c0a70ea00/970695da231746e7acc1bb5b75f3f9aa/FLAGd47b6dd65 [2022-11-03 01:40:18,494 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:40:18,495 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c [2022-11-03 01:40:18,517 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/data/c0a70ea00/970695da231746e7acc1bb5b75f3f9aa/FLAGd47b6dd65 [2022-11-03 01:40:18,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/data/c0a70ea00/970695da231746e7acc1bb5b75f3f9aa [2022-11-03 01:40:18,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:40:18,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:40:18,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:40:18,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:40:18,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:40:18,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:40:18" (1/1) ... [2022-11-03 01:40:18,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd7b366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:18, skipping insertion in model container [2022-11-03 01:40:18,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:40:18" (1/1) ... [2022-11-03 01:40:18,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:40:18,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:40:19,015 WARN L230 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_43ae6aab-16ba-495e-92b1-604d85c1848a/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c[1871,1884] [2022-11-03 01:40:19,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:40:19,633 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:40:19,651 WARN L230 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_43ae6aab-16ba-495e-92b1-604d85c1848a/sv-benchmarks/c/seq-mthreaded/rekh_ctm.3-2.c[1871,1884] [2022-11-03 01:40:19,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:40:19,980 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:40:19,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19 WrapperNode [2022-11-03 01:40:19,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:40:19,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:40:19,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:40:19,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:40:19,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,335 INFO L138 Inliner]: procedures = 99, calls = 2816, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 8376 [2022-11-03 01:40:20,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:40:20,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:40:20,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:40:20,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:40:20,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,736 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:40:20,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:40:20,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:40:20,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:40:20,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (1/1) ... [2022-11-03 01:40:20,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:40:20,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:40:20,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:40:20,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ae6aab-16ba-495e-92b1-604d85c1848a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:40:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-11-03 01:40:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-11-03 01:40:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-11-03 01:40:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-11-03 01:40:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:40:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-11-03 01:40:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-11-03 01:40:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-03 01:40:20,896 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-03 01:40:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-11-03 01:40:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-11-03 01:40:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-11-03 01:40:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-11-03 01:40:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-03 01:40:20,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-03 01:40:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-11-03 01:40:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-11-03 01:40:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-11-03 01:40:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-11-03 01:40:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-11-03 01:40:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-11-03 01:40:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:40:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-03 01:40:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-03 01:40:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-11-03 01:40:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-11-03 01:40:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-11-03 01:40:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-11-03 01:40:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-11-03 01:40:20,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-11-03 01:40:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-11-03 01:40:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-11-03 01:40:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-11-03 01:40:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-11-03 01:40:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-03 01:40:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-03 01:40:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:40:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-03 01:40:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-03 01:40:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-11-03 01:40:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-11-03 01:40:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-11-03 01:40:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-11-03 01:40:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-11-03 01:40:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-11-03 01:40:20,905 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-03 01:40:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-03 01:40:20,906 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-11-03 01:40:20,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-11-03 01:40:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-03 01:40:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-03 01:40:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-11-03 01:40:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-11-03 01:40:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-11-03 01:40:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-11-03 01:40:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-11-03 01:40:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-11-03 01:40:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-11-03 01:40:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-11-03 01:40:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-11-03 01:40:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-11-03 01:40:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-11-03 01:40:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-11-03 01:40:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-03 01:40:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-03 01:40:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-11-03 01:40:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-11-03 01:40:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-11-03 01:40:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-11-03 01:40:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-11-03 01:40:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-11-03 01:40:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-11-03 01:40:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-11-03 01:40:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-11-03 01:40:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-11-03 01:40:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-11-03 01:40:20,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-11-03 01:40:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-11-03 01:40:20,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-11-03 01:40:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-11-03 01:40:20,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-11-03 01:40:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-11-03 01:40:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-11-03 01:40:20,914 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-11-03 01:40:20,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-11-03 01:40:20,914 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-11-03 01:40:20,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-11-03 01:40:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-11-03 01:40:20,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-11-03 01:40:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:40:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-11-03 01:40:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-11-03 01:40:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:40:20,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:40:21,621 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:40:21,626 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:40:42,081 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:40:50,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:40:50,563 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 01:40:50,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:40:50 BoogieIcfgContainer [2022-11-03 01:40:50,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:40:50,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:40:50,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:40:50,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:40:50,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:40:18" (1/3) ... [2022-11-03 01:40:50,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcb74cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:40:50, skipping insertion in model container [2022-11-03 01:40:50,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:19" (2/3) ... [2022-11-03 01:40:50,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcb74cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:40:50, skipping insertion in model container [2022-11-03 01:40:50,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:40:50" (3/3) ... [2022-11-03 01:40:50,589 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.3-2.c [2022-11-03 01:40:50,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:40:50,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:40:50,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:40:50,747 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;@588b2de1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:40:50,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:40:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 611 states have (on average 1.3846153846153846) internal successors, (846), 635 states have internal predecessors, (846), 306 states have call successors, (306), 44 states have call predecessors, (306), 44 states have return successors, (306), 296 states have call predecessors, (306), 306 states have call successors, (306) [2022-11-03 01:40:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:40:50,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:50,765 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] [2022-11-03 01:40:50,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:50,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1840980182, now seen corresponding path program 1 times [2022-11-03 01:40:50,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:50,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799971727] [2022-11-03 01:40:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:50,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms