./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9 --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 f1e7a931f8678a52ab26f5a1b74bb59e33ef4ed9c03430a4d28342e1a824b13d --- 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-6b4ec56 [2022-11-20 20:09:28,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:09:28,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:09:28,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:09:28,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:09:28,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:09:28,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:09:28,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:09:28,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:09:28,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:09:28,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:09:28,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:09:28,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:09:28,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:09:28,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:09:28,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:09:28,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:09:28,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:09:28,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:09:28,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:09:28,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:09:28,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:09:28,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:09:28,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:09:28,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:09:28,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:09:28,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:09:28,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:09:28,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:09:28,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:09:28,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:09:28,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:09:28,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:09:28,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:09:28,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:09:28,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:09:28,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:09:28,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:09:28,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:09:28,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:09:28,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:09:28,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:09:28,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:09:28,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:09:28,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:09:28,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:09:28,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:09:28,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:09:28,443 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:09:28,443 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:09:28,443 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:09:28,443 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:09:28,444 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:09:28,444 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:09:28,444 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:09:28,444 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:09:28,444 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:09:28,445 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:09:28,445 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:09:28,445 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:09:28,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:09:28,446 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:09:28,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:09:28,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:09:28,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:09:28,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:09:28,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:09:28,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:09:28,448 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:09:28,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:09:28,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:09:28,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:09:28,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:09:28,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:09:28,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:09:28,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:09:28,449 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:09:28,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:09:28,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:09:28,450 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:09:28,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:09:28,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:09:28,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:09:28,454 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_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e7a931f8678a52ab26f5a1b74bb59e33ef4ed9c03430a4d28342e1a824b13d [2022-11-20 20:09:28,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:09:28,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:09:28,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:09:28,794 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:09:28,796 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:09:28,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2022-11-20 20:09:31,939 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:09:32,370 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:09:32,370 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c [2022-11-20 20:09:32,398 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/data/fc0a367ea/7d81fa7d78e540b7ac03509462333285/FLAGbfd6d088e [2022-11-20 20:09:32,416 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/data/fc0a367ea/7d81fa7d78e540b7ac03509462333285 [2022-11-20 20:09:32,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:09:32,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:09:32,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:09:32,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:09:32,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:09:32,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:09:32" (1/1) ... [2022-11-20 20:09:32,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746e00b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:32, skipping insertion in model container [2022-11-20 20:09:32,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:09:32" (1/1) ... [2022-11-20 20:09:32,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:09:32,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:09:32,723 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_3d099c0a-41ec-4099-bb3e-b1f9610998cf/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c[1870,1883] [2022-11-20 20:09:33,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:09:33,357 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:09:33,372 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_3d099c0a-41ec-4099-bb3e-b1f9610998cf/sv-benchmarks/c/seq-mthreaded/rekh_ctm.2-2.c[1870,1883] [2022-11-20 20:09:33,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:09:33,698 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:09:33,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33 WrapperNode [2022-11-20 20:09:33,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:09:33,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:09:33,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:09:33,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:09:33,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:33,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,031 INFO L138 Inliner]: procedures = 99, calls = 2725, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 8221 [2022-11-20 20:09:34,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:09:34,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:09:34,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:09:34,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:09:34,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,423 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:09:34,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:09:34,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:09:34,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:09:34,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (1/1) ... [2022-11-20 20:09:34,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:09:34,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:09:34,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:09:34,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d099c0a-41ec-4099-bb3e-b1f9610998cf/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:09:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_state [2022-11-20 20:09:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_state [2022-11-20 20:09:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_state [2022-11-20 20:09:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_state [2022-11-20 20:09:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:09:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_run_nxtbg [2022-11-20 20:09:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_run_nxtbg [2022-11-20 20:09:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-20 20:09:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-20 20:09:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write___startrek_current_priority [2022-11-20 20:09:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write___startrek_current_priority [2022-11-20 20:09:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_input [2022-11-20 20:09:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_input [2022-11-20 20:09:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_hyperperiod [2022-11-20 20:09:34,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_hyperperiod [2022-11-20 20:09:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure bg_nxtcolorsensor [2022-11-20 20:09:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure bg_nxtcolorsensor [2022-11-20 20:09:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Writer [2022-11-20 20:09:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Writer [2022-11-20 20:09:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_mode [2022-11-20 20:09:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_mode [2022-11-20 20:09:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:09:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-20 20:09:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-20 20:09:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_count [2022-11-20 20:09:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_count [2022-11-20 20:09:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_state [2022-11-20 20:09:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_state [2022-11-20 20:09:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_output [2022-11-20 20:09:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_output [2022-11-20 20:09:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure move_motor [2022-11-20 20:09:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure move_motor [2022-11-20 20:09:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_speed [2022-11-20 20:09:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_speed [2022-11-20 20:09:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-20 20:09:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-20 20:09:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:09:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-20 20:09:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-20 20:09:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_set_nxtcolorsensor [2022-11-20 20:09:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_set_nxtcolorsensor [2022-11-20 20:09:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t3 [2022-11-20 20:09:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t3 [2022-11-20 20:09:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_output [2022-11-20 20:09:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_output [2022-11-20 20:09:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-20 20:09:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-20 20:09:34,703 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_T_count [2022-11-20 20:09:34,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_T_count [2022-11-20 20:09:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-20 20:09:34,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-20 20:09:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure TerminateTask [2022-11-20 20:09:34,704 INFO L138 BoogieDeclarations]: Found implementation of procedure TerminateTask [2022-11-20 20:09:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_count [2022-11-20 20:09:34,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_count [2022-11-20 20:09:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read___startrek_current_priority [2022-11-20 20:09:34,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read___startrek_current_priority [2022-11-20 20:09:34,704 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_count [2022-11-20 20:09:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_count [2022-11-20 20:09:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_count [2022-11-20 20:09:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_count [2022-11-20 20:09:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_T_speed [2022-11-20 20:09:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_T_speed [2022-11-20 20:09:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-20 20:09:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtcolorsensor_data_mode [2022-11-20 20:09:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_threshold [2022-11-20 20:09:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_threshold [2022-11-20 20:09:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_need_to_read [2022-11-20 20:09:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_need_to_read [2022-11-20 20:09:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_state [2022-11-20 20:09:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_state [2022-11-20 20:09:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Reader [2022-11-20 20:09:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Reader [2022-11-20 20:09:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_dir [2022-11-20 20:09:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_dir [2022-11-20 20:09:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_W_speed [2022-11-20 20:09:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_W_speed [2022-11-20 20:09:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_input [2022-11-20 20:09:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_input [2022-11-20 20:09:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_R_state [2022-11-20 20:09:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_R_state [2022-11-20 20:09:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_need_to_run_nxtbg [2022-11-20 20:09:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_need_to_run_nxtbg [2022-11-20 20:09:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_W_state [2022-11-20 20:09:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_W_state [2022-11-20 20:09:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_R_count [2022-11-20 20:09:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_R_count [2022-11-20 20:09:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_TapeMover [2022-11-20 20:09:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_TapeMover [2022-11-20 20:09:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_nxtcolorsensor_mode [2022-11-20 20:09:34,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_nxtcolorsensor_mode [2022-11-20 20:09:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:09:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_Controller [2022-11-20 20:09:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_Controller [2022-11-20 20:09:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:09:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:09:35,420 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:09:35,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:09:51,960 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:10:01,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:10:01,531 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 20:10:01,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:10:01 BoogieIcfgContainer [2022-11-20 20:10:01,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:10:01,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:10:01,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:10:01,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:10:01,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:09:32" (1/3) ... [2022-11-20 20:10:01,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d374aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:10:01, skipping insertion in model container [2022-11-20 20:10:01,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:33" (2/3) ... [2022-11-20 20:10:01,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d374aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:10:01, skipping insertion in model container [2022-11-20 20:10:01,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:10:01" (3/3) ... [2022-11-20 20:10:01,547 INFO L112 eAbstractionObserver]: Analyzing ICFG rekh_ctm.2-2.c [2022-11-20 20:10:01,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:10:01,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:10:01,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:10:01,709 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;@7420fc6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:10:01,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:10:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 959 states, 608 states have (on average 1.3848684210526316) internal successors, (842), 632 states have internal predecessors, (842), 304 states have call successors, (304), 45 states have call predecessors, (304), 45 states have return successors, (304), 294 states have call predecessors, (304), 304 states have call successors, (304) [2022-11-20 20:10:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 20:10:01,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:01,743 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] [2022-11-20 20:10:01,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:10:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1235398786, now seen corresponding path program 1 times [2022-11-20 20:10:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:01,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808369866] [2022-11-20 20:10:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms