./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl --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 a9fe331e5302255756e033832e890b54b7bae1c0bb354f9ba1bbe18985f952e5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:01:23,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:01:23,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:01:23,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:01:23,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:01:23,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:01:23,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:01:23,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:01:23,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:01:23,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:01:23,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:01:23,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:01:23,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:01:23,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:01:23,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:01:23,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:01:23,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:01:23,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:01:23,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:01:23,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:01:23,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:01:23,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:01:23,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:01:23,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:01:23,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:01:23,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:01:23,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:01:23,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:01:23,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:01:23,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:01:23,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:01:23,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:01:23,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:01:23,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:01:23,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:01:23,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:01:23,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:01:23,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:01:23,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:01:23,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:01:23,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:01:23,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:01:23,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:01:24,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:01:24,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:01:24,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:01:24,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:01:24,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:01:24,007 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:01:24,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:01:24,008 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:01:24,008 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:01:24,009 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:01:24,010 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:01:24,010 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:01:24,010 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:01:24,010 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:01:24,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:01:24,011 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:01:24,011 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:01:24,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:01:24,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:01:24,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:01:24,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:01:24,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:01:24,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:01:24,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:01:24,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:01:24,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:01:24,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:01:24,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:01:24,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:01:24,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:01:24,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:01:24,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:01:24,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:01:24,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:01:24,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:01:24,017 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:01:24,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:01:24,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:01:24,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:01:24,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:01:24,018 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fe331e5302255756e033832e890b54b7bae1c0bb354f9ba1bbe18985f952e5 [2021-11-23 17:01:24,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:01:24,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:01:24,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:01:24,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:01:24,336 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:01:24,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c [2021-11-23 17:01:24,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data/45923a5e7/3052b4fadc2c4abfbbe0226d6dcc2206/FLAG32cb9023a [2021-11-23 17:01:25,001 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:01:25,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c [2021-11-23 17:01:25,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data/45923a5e7/3052b4fadc2c4abfbbe0226d6dcc2206/FLAG32cb9023a [2021-11-23 17:01:25,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data/45923a5e7/3052b4fadc2c4abfbbe0226d6dcc2206 [2021-11-23 17:01:25,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:01:25,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:01:25,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:01:25,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:01:25,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:01:25,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:25,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e8c34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25, skipping insertion in model container [2021-11-23 17:01:25,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:25,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:01:25,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:01:25,564 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c[913,926] [2021-11-23 17:01:25,625 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c[5977,5990] [2021-11-23 17:01:25,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:01:25,792 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:01:25,804 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c[913,926] [2021-11-23 17:01:25,817 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c[5977,5990] [2021-11-23 17:01:25,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:01:25,922 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:01:25,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25 WrapperNode [2021-11-23 17:01:25,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:01:25,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:01:25,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:01:25,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:01:25,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:25,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,027 INFO L137 Inliner]: procedures = 74, calls = 88, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1116 [2021-11-23 17:01:26,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:01:26,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:01:26,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:01:26,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:01:26,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:01:26,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:01:26,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:01:26,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:01:26,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:25" (1/1) ... [2021-11-23 17:01:26,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:01:26,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:01:26,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:01:26,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:01:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:01:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:01:26,249 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:01:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 17:01:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 17:01:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:01:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:01:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:01:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:01:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:01:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:01:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:01:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:01:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:01:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:01:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:01:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:01:26,252 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:01:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:01:26,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:01:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:01:26,253 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:01:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 17:01:26,253 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 17:01:26,404 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:01:26,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:01:27,424 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:01:27,559 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:01:27,567 INFO L158 Benchmark]: Toolchain (without parser) took 2237.15ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 75.8MB in the end (delta: 3.9MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2021-11-23 17:01:27,568 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:01:27,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.26ms. Allocated memory is still 109.1MB. Free memory was 79.5MB in the beginning and 52.7MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-23 17:01:27,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.54ms. Allocated memory is still 109.1MB. Free memory was 52.7MB in the beginning and 47.7MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:01:27,573 INFO L158 Benchmark]: Boogie Preprocessor took 74.57ms. Allocated memory is still 109.1MB. Free memory was 47.7MB in the beginning and 43.2MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:01:27,573 INFO L158 Benchmark]: RCFGBuilder took 1460.10ms. Allocated memory is still 109.1MB. Free memory was 43.2MB in the beginning and 75.8MB in the end (delta: -32.6MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-11-23 17:01:27,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.26ms. Allocated memory is still 109.1MB. Free memory was 79.5MB in the beginning and 52.7MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.54ms. Allocated memory is still 109.1MB. Free memory was 52.7MB in the beginning and 47.7MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.57ms. Allocated memory is still 109.1MB. Free memory was 47.7MB in the beginning and 43.2MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1460.10ms. Allocated memory is still 109.1MB. Free memory was 43.2MB in the beginning and 75.8MB in the end (delta: -32.6MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:01:27,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl --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 a9fe331e5302255756e033832e890b54b7bae1c0bb354f9ba1bbe18985f952e5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:01:30,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:01:30,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:01:30,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:01:30,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:01:30,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:01:30,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:01:30,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:01:30,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:01:30,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:01:30,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:01:30,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:01:30,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:01:30,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:01:30,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:01:30,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:01:30,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:01:30,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:01:30,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:01:30,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:01:30,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:01:30,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:01:30,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:01:30,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:01:30,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:01:30,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:01:30,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:01:30,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:01:30,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:01:30,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:01:30,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:01:30,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:01:30,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:01:30,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:01:30,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:01:30,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:01:30,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:01:30,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:01:30,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:01:30,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:01:30,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:01:30,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:01:30,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:01:30,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:01:30,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:01:30,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:01:30,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:01:30,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:01:30,326 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:01:30,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:01:30,326 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:01:30,327 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:01:30,328 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:01:30,328 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:01:30,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:01:30,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:01:30,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:01:30,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:01:30,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:01:30,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:01:30,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:01:30,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:01:30,332 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:01:30,332 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:01:30,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:01:30,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:01:30,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:01:30,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:01:30,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:01:30,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:01:30,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:01:30,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:01:30,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:01:30,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:01:30,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:01:30,335 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:01:30,336 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:01:30,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:01:30,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:01:30,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:01:30,337 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fe331e5302255756e033832e890b54b7bae1c0bb354f9ba1bbe18985f952e5 [2021-11-23 17:01:30,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:01:30,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:01:30,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:01:30,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:01:30,776 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:01:30,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c [2021-11-23 17:01:30,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data/fda0811a5/e92050226bac465b988c0c06f373ba2f/FLAGbc3dc447c [2021-11-23 17:01:31,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:01:31,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c [2021-11-23 17:01:31,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data/fda0811a5/e92050226bac465b988c0c06f373ba2f/FLAGbc3dc447c [2021-11-23 17:01:31,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/data/fda0811a5/e92050226bac465b988c0c06f373ba2f [2021-11-23 17:01:31,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:01:31,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:01:31,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:01:31,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:01:31,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:01:31,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:01:31" (1/1) ... [2021-11-23 17:01:31,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7d77f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:31, skipping insertion in model container [2021-11-23 17:01:31,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:01:31" (1/1) ... [2021-11-23 17:01:31,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:01:31,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:01:32,018 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c[913,926] [2021-11-23 17:01:32,118 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c[5977,5990] [2021-11-23 17:01:32,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:01:32,323 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:01:32,339 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c[913,926] [2021-11-23 17:01:32,378 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_162843bb-afee-4d8c-aae9-d8d23e3f57d0/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.15.cil.c[5977,5990] [2021-11-23 17:01:32,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:01:32,482 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:01:32,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32 WrapperNode [2021-11-23 17:01:32,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:01:32,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:01:32,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:01:32,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:01:32,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,591 INFO L137 Inliner]: procedures = 75, calls = 88, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1072 [2021-11-23 17:01:32,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:01:32,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:01:32,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:01:32,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:01:32,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:01:32,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:01:32,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:01:32,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:01:32,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (1/1) ... [2021-11-23 17:01:32,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:01:32,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:01:32,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:01:32,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:01:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:01:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-23 17:01:32,826 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-23 17:01:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-11-23 17:01:32,827 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-11-23 17:01:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-11-23 17:01:32,827 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-11-23 17:01:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-11-23 17:01:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-11-23 17:01:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-11-23 17:01:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-11-23 17:01:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-11-23 17:01:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-11-23 17:01:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:01:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-11-23 17:01:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-11-23 17:01:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-11-23 17:01:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-11-23 17:01:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:01:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:01:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-11-23 17:01:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-11-23 17:01:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-11-23 17:01:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-11-23 17:01:32,971 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:01:32,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:01:34,187 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:01:34,209 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:01:34,209 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-23 17:01:34,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:01:34 BoogieIcfgContainer [2021-11-23 17:01:34,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:01:34,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:01:34,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:01:34,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:01:34,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:01:31" (1/3) ... [2021-11-23 17:01:34,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795446b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:01:34, skipping insertion in model container [2021-11-23 17:01:34,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:32" (2/3) ... [2021-11-23 17:01:34,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795446b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:01:34, skipping insertion in model container [2021-11-23 17:01:34,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:01:34" (3/3) ... [2021-11-23 17:01:34,224 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.15.cil.c [2021-11-23 17:01:34,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:01:34,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:01:34,301 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:01:34,309 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:01:34,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:01:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 485 states, 437 states have (on average 1.654462242562929) internal successors, (723), 444 states have internal predecessors, (723), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-23 17:01:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 17:01:34,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:01:34,368 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:01:34,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:01:34,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:01:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1777034307, now seen corresponding path program 1 times [2021-11-23 17:01:34,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:01:34,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855756332] [2021-11-23 17:01:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:01:34,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:01:34,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:01:34,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:01:34,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:01:34,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:01:34,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:01:34,683 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:01:34,688 INFO L158 Benchmark]: Toolchain (without parser) took 2967.98ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 50.8MB in the beginning and 45.9MB in the end (delta: 4.9MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2021-11-23 17:01:34,689 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 50.3MB. Free memory was 30.2MB in the beginning and 30.2MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:01:34,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 760.52ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 42.9MB in the end (delta: 7.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 17:01:34,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.15ms. Allocated memory is still 73.4MB. Free memory was 42.6MB in the beginning and 37.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:01:34,691 INFO L158 Benchmark]: Boogie Preprocessor took 135.98ms. Allocated memory is still 73.4MB. Free memory was 37.9MB in the beginning and 52.0MB in the end (delta: -14.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-11-23 17:01:34,692 INFO L158 Benchmark]: RCFGBuilder took 1474.21ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 52.0MB in the beginning and 58.5MB in the end (delta: -6.6MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2021-11-23 17:01:34,693 INFO L158 Benchmark]: TraceAbstraction took 470.66ms. Allocated memory is still 88.1MB. Free memory was 58.1MB in the beginning and 45.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:01:34,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 50.3MB. Free memory was 30.2MB in the beginning and 30.2MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 760.52ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 42.9MB in the end (delta: 7.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 118.15ms. Allocated memory is still 73.4MB. Free memory was 42.6MB in the beginning and 37.9MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 135.98ms. Allocated memory is still 73.4MB. Free memory was 37.9MB in the beginning and 52.0MB in the end (delta: -14.1MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1474.21ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 52.0MB in the beginning and 58.5MB in the end (delta: -6.6MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * TraceAbstraction took 470.66ms. Allocated memory is still 88.1MB. Free memory was 58.1MB in the beginning and 45.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:01:34,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162843bb-afee-4d8c-aae9-d8d23e3f57d0/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable