./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS --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 8431fe38b0da32ab86eb1904cb6933c2318d796f975ab3025441ba9d9611c043 --- 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-8393723 [2022-11-19 07:57:50,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:57:50,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:57:50,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:57:50,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:57:50,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:57:50,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:57:50,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:57:50,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:57:50,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:57:50,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:57:50,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:57:50,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:57:50,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:57:50,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:57:50,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:57:50,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:57:50,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:57:50,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:57:50,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:57:50,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:57:50,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:57:50,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:57:50,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:57:50,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:57:50,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:57:50,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:57:50,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:57:50,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:57:50,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:57:50,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:57:50,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:57:50,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:57:50,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:57:50,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:57:50,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:57:50,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:57:50,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:57:50,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:57:50,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:57:50,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:57:50,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:57:50,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:57:50,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:57:50,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:57:50,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:57:50,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:57:50,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:57:50,464 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:57:50,464 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:57:50,464 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:57:50,465 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:57:50,466 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:57:50,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:57:50,467 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:57:50,467 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:57:50,467 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:57:50,467 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:57:50,468 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:57:50,468 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:57:50,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:57:50,469 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:57:50,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:57:50,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:57:50,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:57:50,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:57:50,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:57:50,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:57:50,471 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:57:50,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:57:50,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:57:50,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:57:50,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:57:50,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:57:50,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:57:50,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:57:50,474 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:57:50,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:57:50,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:57:50,475 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:57:50,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:57:50,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:57:50,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:57:50,476 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_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8431fe38b0da32ab86eb1904cb6933c2318d796f975ab3025441ba9d9611c043 [2022-11-19 07:57:50,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:57:50,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:57:50,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:57:50,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:57:50,909 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:57:50,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-1.c [2022-11-19 07:57:51,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/data/7f3325932/1eba93c03db14c9bb150d034ddec8af5/FLAG445e8db4c [2022-11-19 07:57:51,857 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:57:51,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-1.c [2022-11-19 07:57:51,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/data/7f3325932/1eba93c03db14c9bb150d034ddec8af5/FLAG445e8db4c [2022-11-19 07:57:52,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/data/7f3325932/1eba93c03db14c9bb150d034ddec8af5 [2022-11-19 07:57:52,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:57:52,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:57:52,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:57:52,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:57:52,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:57:52,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:52" (1/1) ... [2022-11-19 07:57:52,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25711a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:52, skipping insertion in model container [2022-11-19 07:57:52,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:52" (1/1) ... [2022-11-19 07:57:52,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:57:52,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:57:52,433 WARN L234 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_25c7642a-a6e9-476a-8d77-6d2c490cbb64/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-1.c[1974,1987] [2022-11-19 07:57:52,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:57:52,877 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:57:52,913 WARN L234 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_25c7642a-a6e9-476a-8d77-6d2c490cbb64/sv-benchmarks/c/seq-mthreaded/rekcba_aso.1.M1-1.c[1974,1987] [2022-11-19 07:57:53,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:57:53,293 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:57:53,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53 WrapperNode [2022-11-19 07:57:53,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:57:53,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:57:53,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:57:53,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:57:53,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,617 INFO L138 Inliner]: procedures = 60, calls = 2058, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 4373 [2022-11-19 07:57:53,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:57:53,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:57:53,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:57:53,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:57:53,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,778 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:57:53,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:57:53,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:57:53,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:57:53,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (1/1) ... [2022-11-19 07:57:53,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:57:53,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:53,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:57:53,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25c7642a-a6e9-476a-8d77-6d2c490cbb64/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:57:53,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:57:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_forward [2022-11-19 07:57:53,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_forward [2022-11-19 07:57:53,998 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t2 [2022-11-19 07:57:53,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t2 [2022-11-19 07:57:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_nxtway_gs_mode [2022-11-19 07:57:53,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_nxtway_gs_mode [2022-11-19 07:57:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:57:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t0 [2022-11-19 07:57:54,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t0 [2022-11-19 07:57:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_cs_t1 [2022-11-19 07:57:54,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_cs_t1 [2022-11-19 07:57:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_obstacle_flag [2022-11-19 07:57:54,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_obstacle_flag [2022-11-19 07:57:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:57:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_count [2022-11-19 07:57:54,001 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_count [2022-11-19 07:57:54,001 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_gyro_sensor [2022-11-19 07:57:54,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_gyro_sensor [2022-11-19 07:57:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_turn [2022-11-19 07:57:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_turn [2022-11-19 07:57:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-19 07:57:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts1 [2022-11-19 07:57:54,002 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-19 07:57:54,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts2 [2022-11-19 07:57:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-11-19 07:57:54,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_entry_pt_OSEK_Task_ts3 [2022-11-19 07:57:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:57:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:57:54,003 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-19 07:57:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-19 07:57:54,004 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_set_speed [2022-11-19 07:57:54,004 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_set_speed [2022-11-19 07:57:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_write_cmd_forward [2022-11-19 07:57:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_write_cmd_forward [2022-11-19 07:57:54,005 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_obstacle_flag [2022-11-19 07:57:54,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_obstacle_flag [2022-11-19 07:57:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:57:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:57:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:57:54,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:57:54,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:57:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure ecrobot_get_systick_ms [2022-11-19 07:57:54,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ecrobot_get_systick_ms [2022-11-19 07:57:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure nxt_motor_get_count [2022-11-19 07:57:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt_motor_get_count [2022-11-19 07:57:54,009 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_nxtway_gs_mode [2022-11-19 07:57:54,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_nxtway_gs_mode [2022-11-19 07:57:54,010 INFO L130 BoogieDeclarations]: Found specification of procedure __startrek_read_cmd_turn [2022-11-19 07:57:54,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __startrek_read_cmd_turn [2022-11-19 07:57:54,586 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:57:54,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:58:02,844 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:58:03,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:58:03,222 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:58:03,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:03 BoogieIcfgContainer [2022-11-19 07:58:03,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:58:03,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:58:03,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:58:03,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:58:03,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:52" (1/3) ... [2022-11-19 07:58:03,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35853317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:03, skipping insertion in model container [2022-11-19 07:58:03,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53" (2/3) ... [2022-11-19 07:58:03,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35853317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:03, skipping insertion in model container [2022-11-19 07:58:03,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:03" (3/3) ... [2022-11-19 07:58:03,248 INFO L112 eAbstractionObserver]: Analyzing ICFG rekcba_aso.1.M1-1.c [2022-11-19 07:58:03,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:58:03,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:58:03,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:58:03,438 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;@6efbf1c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:58:03,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:58:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 1308 states, 804 states have (on average 1.2761194029850746) internal successors, (1026), 836 states have internal predecessors, (1026), 481 states have call successors, (481), 21 states have call predecessors, (481), 21 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2022-11-19 07:58:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2022-11-19 07:58:03,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:03,565 INFO L195 NwaCegarLoop]: trace histogram [137, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:03,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:58:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1659802367, now seen corresponding path program 1 times [2022-11-19 07:58:03,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:03,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097931926] [2022-11-19 07:58:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:03,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms